Our surveys internationally are conducted via telephone or face-to-face interviews, depending on the country. The results are based on national samples, unless otherwise noted. Included here is detailed information, such as mode of interview, sampling design, margin of error, and design effect, for each country we survey, organized by country and by year.

For more general information on how we conduct our international survey research, visit here.

The margin of sampling error reported is based on all interviews conducted in a country. The margin of error takes into account the design effect due to clustering and weighting, where applicable. For results based on the full sample in a given country, one can say with 95% confidence that the error attributable to sampling and other random effects is plus or minus the margin of error. The margin of error is larger for results based on subsamples in the survey. Sample sizes and sampling errors for subgroups are available upon request. In addition to sampling error, one should bear in mind that question wording and practical difficulties in conducting surveys can introduce error or bias into the findings of opinion polls.

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Survey Methods for all available countries in 2015

Country: Argentina
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are localities stratified by region and locality size. Nine large localities are selected with certainty. Within these localities, PSUs are population zones. The number of effective PSUs is 100. Individuals within households are selected using the last birthday method, and age and gender quotas based on national figures. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Spanish
Fieldwork Dates: April 6 - 28, 2015
Sample Size: 1,000
Margin of Error: 3.9 percentage points
Representative: Adult population 18 plus (excluding dispersed rural population)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Education
Design Effects: 1.56
Country: Australia
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Random Digit Dial (RDD) probability sample of landline households (50% of sample) stratified by region and cell phone users (50% of sample). Individuals within landline households are selected using the youngest adult male or female method. Interviews in the cell sample are conducted with the person who answered the phone, if age 18 or older and sole user of phone. For both landline and cell samples, at least 10 phone calls are made to complete the interview with the selected respondent.
Mode: Telephone
Languages: English
Fieldwork Dates: April 7 - 21, 2015
Sample Size: 1,004
Margin of Error: 3.6 percentage points
Representative: Adults 18 plus in telephone households
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, education, region, metro area, phone use and probability of selection of respondent
Design Effects: 1.35
Country: Brazil
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are municipalities stratified by region and municipality size. Nine large municipalities are selected with certainty. Within these municipalities, PSUs are census tracts. The number of effective PSUs is 100. Individuals within households are selected using the last birthday method, and age, gender and household income quotas based on national figures. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Portuguese
Fieldwork Dates: April 7 - May 4, 2015
Sample Size: 1,000
Margin of Error: 4.0 percentage points
Representative: Adult population 18 plus
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Age and education
Design Effects: 1.63
Country: Burkina Faso
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are enumerated areas stratified by region and urbanity. The number of effective PSUs is 125. Individuals within households are selected using a Kish grid. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: French, Moore, Fulfulde, Dioula
Fieldwork Dates: April 14 - May 21, 2015
Sample Size: 1,000
Margin of Error: 3.7 percentage points
Representative: Adult population 18 plus
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender
Design Effects: 1.45
Country: Canada
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Random Digit Dial (RDD) probability sample of landline households (50% of sample) stratified by geographic area and community size, and cell phone users (50% of sample) stratified by geographic area. Individuals within landline households are selected using the youngest adult male or female method. Interviews in the cell sample are conducted with the person who answered the phone, if age 18 or older. For both landline and cell samples, at least 10 phone calls are made to complete the interview with the selected respondent.
Mode: Telephone
Languages: English, French
Fieldwork Dates: May 4 - 15, 2015
Sample Size: 1,004
Margin of Error: 3.6 percentage points
Representative: Adults 18 plus in telephone households (excluding residents of Yukon, Nunavut and Northwest Territories)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, education and probability of selection of respondent
Design Effects: 1.37
Country: Chile
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are geographic divisions stratified by region and urbanity. The number of effective PSUs is 125. Individuals within households are selected using the last birthday method. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Spanish
Fieldwork Dates: April 6 - May 8, 2015
Sample Size: 1,000
Margin of Error: 3.8 percentage points
Representative: Adult population 18 plus (excluding Chiloe and other islands, and the Atacama region inaccessible due to flooding)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender and age
Design Effects: 1.48
Country: China
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are administrative units stratified by region and administrative division (districts, county-level cities and counties). Four provincial-level cities are selected with certainty. Within these cities, PSUs are grids within districts. The number of effective PSUs is 77. Individuals within households are selected using a Kish grid. At least three attempts are made to complete the interview with the selected respondent. The sample is disproportionately urban, but the data are weighted to reflect the actual urban/rural distribution in China.
Mode: Face-to-face
Languages: Chinese (Mandarin, Shanghai, Pucheng, Longjiang, Ningxiang, Lanzhou, Pingyao, Yucheng, Qinhuangdao, Beijing, Tiandeng, Hangzhou, Fengjie, Lianghe, Kunming, Danfeng, Jiangmen, Guangzhou, Lushan, Foshan, Jingning, Yangzhou, Senhxian, Fuyang, Changzhi, Hexian, Tuanfeng, Yulin, Shulan, Longchang, Siping, Gaoping, Nehe, Jiedong, Pingyi, Chongqing, Chengde, Tianchang, Jixian, Xiushan, Shaoxing, Yongcheng, Liuyang, Xingcheng, Shaoyang, Ningdou, Xingping, Cenxi, Tianjin, Dengta, Nankang, Zibo, Hancheng, Huaying, Bazhou, Pizhou, Jinghong, Xingning, Lufeng, Wenling, Ruian, Yuyao, Qufu, Liyang, Changle, Gaoan, Jiangyin dialects)
Fieldwork Dates: April 15 - May 27, 2015
Sample Size: 3,649
Margin of Error: 3.3 percentage points
Representative: Adult population 18 plus (excluding Tibet, Xinjiang, Hong Kong and Macao)
Primary Vendor: Princeton Survey Research Associates International
Note: The results cited are from Horizonkey’s self-sponsored survey.
Weighting Variables: Region and urbanity
Design Effects: 4.24
Country: Ethiopia
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are enumerated areas stratified by region and urbanity. The number of effective PSUs is 125. Individuals within households are selected using a Kish grid. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Amharic, Oromifa, Tigrigna
Fieldwork Dates: March 25 - April 17, 2015
Sample Size: 1,000
Margin of Error: 3.8 percentage points
Representative: Adult population 18 plus (excluding areas of insecurity or inaccessibility in the Somali and Gambella regions)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Age and education
Design Effects: 1.50
Country: France
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Listed sample of landline households (50% of sample) stratified by region and urbanity, and Random Digit Dial (RDD) probability sample of cell phone users (50% of sample). Individuals within landline households are selected using the next birthday method, and age, gender and occupation quotas based on national figures. Interviews in the cell sample are conducted with the person who answered the phone, if age 18 or older. For both landline and cell samples, at least 10 phone calls are made to complete the interview with the selected respondent.
Mode: Telephone
Languages: French
Fieldwork Dates: April 7 - 20, 2015
Sample Size: 1,001
Margin of Error: 3.4 percentage points
Representative: Adults 18 plus in telephone households
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, education, region, urbanity, phone use and probability of selection of respondent
Design Effects: 1.21
Country: Germany
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Random Digit Dial (RL(2)D) probability sample of landline households (70% of sample) stratified by administrative district and community size, and cell phone users (30% of sample). Individuals within landline households are selected using the last birthday method. Interviews in the cell sample are conducted with the person who answered the phone, if age 18 or older. For both landline and cell samples, at least 10 phone calls are made to complete the interview with the selected respondent.
Mode: Telephone
Languages: German
Fieldwork Dates: April 13 - 29, 2015
Sample Size: 1,000
Margin of Error: 4.0 percentage points
Representative: Adults 18 plus in telephone households
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, education, region and probability of selection of respondent
Design Effects: 1.67
Country: Ghana
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are enumerated areas stratified by region and settlement size. The number of effective PSUs is 125. Individuals within households are selected using a Kish grid and gender quotas based on national figures. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Akan (Twi), English, Dagbani, Ewe
Fieldwork Dates: April 9 - 29, 2015
Sample Size: 1,000
Margin of Error: 3.8 percentage points
Representative: Adult population 18 plus
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Age and education
Design Effects: 1.48
Country: India
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are urban settlements and rural districts stratified by region and urbanity. Nine large cities are selected with certainty. Within these cities, PSUs are sub-grids. The number of effective PSUs is 167. Individuals within households are selected using a Kish grid and gender quotas based on national figures. At least three attempts are made to complete the interview with the selected respondent. The sample is disproportionately urban, but the data are weighted to reflect the actual urban/rural distribution in India.
Mode: Face-to-face
Languages: Hindi, Bengali, Tamil, Telugu, Kannada, Gujarati, Marathi, Odia
Fieldwork Dates: April 6 - May 19, 2015
Sample Size: 2,452
Margin of Error: 3.2 percentage points
Representative: Adult population 18 plus (conducted in 15 of the 17 most populous states and the Union Territory of Delhi, excluding Kerala, Assam, and a district in Chhattisgarh state due to insecurity)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, education, region, urbanity and probability of selection of respondent
Design Effects: 2.69
Country: Indonesia
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are rural and urban sections of districts stratified by province and urbanity. The number of effective PSUs is 100. Individuals within households are selected using a Kish grid. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Bahasa Indonesian
Fieldwork Dates: April 8 - May 4, 2015
Sample Size: 1,000
Margin of Error: 4.0 percentage points
Representative: Adult population 18 plus (excluding Papua and remote areas or provinces with small populations)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, education and urbanity
Design Effects: 1.69
Country: Israel
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are statistical areas stratified by district, urbanity and socioeconomic status. The number of effective PSUs is 125. Individuals within households are selected using the last birthday method and gender quotas based on national figures. At least five attempts are made to complete the interview with the selected respondent. The sample is 60% Jews and 40% Arabs, but the data are weighted to reflect the actual ethnic distribution of Israel.
Mode: Face-to-face
Languages: Hebrew, Arabic
Fieldwork Dates: April 26 - May 14, 2015
Sample Size: 1,000
Margin of Error: 4.3 percentage points
Representative: Adult population 18 plus
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, education, ethnicity and urbanity
Design Effects: 1.92
Country: Italy
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are local councils stratified by region and urbanity. Fourteen large local councils are selected with certainty. Within these local councils, PSUs are starting points. The number of effective PSUs is 100. Individuals within households are selected using the next birthday method. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Italian
Fieldwork Dates: April 7 - 24, 2015
Sample Size: 1,000
Margin of Error: 4.1 percentage points
Representative: Adult population 18 plus
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, education, region and urbanity
Design Effects: 1.73
Country: Japan
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Random Digit Dial (RDD) probability sample of landline households. Individuals within households are selected using the next birthday method, applying age and gender quotas if the sample deviated significantly from national figures. At least 10 phone calls are made to complete the interview with the selected respondent.
Mode: Telephone
Languages: Japanese
Fieldwork Dates: April 6 - 25, 2015
Sample Size: 1,000
Margin of Error: 3.2 percentage points
Representative: Adults 18 plus in landline households
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Education and urbanity
Design Effects: 1.09
Country: Jordan
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are localities stratified by governorate and urbanity. Seventeen large localities are selected with certainty. Within these localities, PSUs are blocks. The number of effective PSUs is 125. Individuals within households are selected using a Kish grid. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Arabic
Fieldwork Dates: April 7 - 29, 2015
Sample Size: 1,000
Margin of Error: 3.7 percentage points
Representative: Adult population 18 plus
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Education
Design Effects: 1.45
Country: Kenya
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are traditional authorities stratified by province and settlement size. The number of effective PSUs is 145. Individuals within households are selected using a Kish grid. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Swahili, English
Fieldwork Dates: April 11 - May 4, 2015
Sample Size: 1,015
Margin of Error: 4.0 percentage points
Representative: Adult population 18 plus (excluding areas of insecurity and flooding in Mandera county)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Age and education
Design Effects: 1.66
Country: Lebanon
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are urban and rural sections of towns and villages stratified by region, administrative district and urbanity. Beirut is selected with certainty. Within Beirut, PSUs are blocks. The number of effective PSUs is 100. Individuals within households are selected using a Kish grid, applying demographic quotas if the sample deviated significantly from national figures. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Arabic
Fieldwork Dates: April 7 - May 5, 2015
Sample Size: 1,000
Margin of Error: 3.9 percentage points
Representative: Adult population 18 plus (excluding a small area in Beirut controlled by a militia group and a few villages in the south of Lebanon, which border Israel and are inaccessible to outsiders)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Education
Design Effects: 1.60
Country: Malaysia
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are electoral districts stratified by state and urbanity. The number of effective PSUs is 125. Individuals within households are selected using computer randomization. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Bahasa Malay, Mandarin Chinese, English
Fieldwork Dates: April 6 - May 11, 2015
Sample Size: 1,000
Margin of Error: 3.8 percentage points
Representative: Adult population 18 plus (excluding difficult to access areas in Sabah and Sarawak and areas in Kelantan due to flooding)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age and urbanity
Design Effects: 1.51
Country: Mexico
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are electoral sections stratified by region, urbanity and the electoral majority party. The number of effective PSUs is 100. Individuals within households are selected using the next birthday method. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Spanish
Fieldwork Dates: April 7 - 19, 2015
Sample Size: 1,000
Margin of Error: 4.1 percentage points
Representative: Adult population 18 plus (excluding one electoral section in Durango and Chiapas due to insecurity and one largely commercial municipality in the Federal District)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age and education within region and probablity of selection of PSU
Design Effects: 1.76
Country: Nigeria
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are local government areas stratified by region and urbanity. One large local government area is selected with certainty. Within this area, PSUs are sectors. The number of effective PSUs is 125. Individuals within households are selected using a Kish grid and gender quotas based on national figures. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Hausa, Igbo, Yoruba, English
Fieldwork Dates: April 20 - May 12, 2015
Sample Size: 1,047
Margin of Error: 3.8 percentage points
Representative: Adult population 18 plus (excluding Adamawa, Borno, Yobe and some areas of Bauchi, Benue, Kaduna, Katsina, Jigawa, Taraba and Zamfara due to unrest and security concerns)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, religion, region and urbanity
Design Effects: 1.61
Country: Pakistan
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are cities and villages stratified by province and population size. Four cities are selected with certainty. Within these cities, PSUs are areas. The number of effective PSUs is 109. Individuals within households are selected using a Kish grid. At least three attempts are made to complete the interview with the selected respondent. The sample is disproportionately urban, but the data are weighted to reflect the actual urban/rural distribution in Pakistan.
Mode: Face-to-face
Languages: Urdu, Pashto, Sindhi, Saraiki, Punjabi, Balochi, Brohi, Brahavi, Hindko
Fieldwork Dates: April 6 - 30, 2015
Sample Size: 1,200
Margin of Error: 3.8 percentage points
Representative: Adult population 18 plus (excluding the Federally Administered Tribal Areas, Gilgit-Baltistan, Azad Jammu and Kashmir as well as areas of instability in Khyber Pakhtunkhwa [formerly the North-West Frontier Province], Punjab and Baluchistan for security reasons)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Region and urbanity
Design Effects: 1.80
Country: Palestinian territories
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are communities stratified by region and urbanity. Eight large cities are selected with certainty. Within these cities, PSUs are sections and starting points. The number of effective PSUs is 100. Individuals within households selected using a Kish grid and gender quotas based on national figures. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Arabic
Fieldwork Dates: April 6 - May 2, 2015
Sample Size: 1,000
Margin of Error: 4.3 percentage points
Representative: Adult population 18 plus (excluding Bedouins who continuously change residence and some communities near Israeli settlements where military restrictions make access difficult)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, education, region and urbanity
Design Effects: 1.91
Country: Peru
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are districts stratified by region and urbanity. Ten large localities are selected with certainty. Within Lima, PSUs are zones. Within all other localities selected with certainty, PSUs are districts. The number of effective PSUs is 100. Individuals within households are selected using a Kish grid. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Spanish
Fieldwork Dates: April 7 - 29, 2015
Sample Size: 1,000
Margin of Error: 4.0 percentage points
Representative: Adult population 18 plus (excluding areas in Sierra Norte due to flooding)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age and education
Design Effects: 1.68
Country: Philippines
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are urban and rural sections of cities and municipalities stratified by region, urbanity and population size. Five large cities are selected with certainty. Within these cities, PSUs are sampling points. The number of effective PSUs is 100. Individuals within households are selected using a Kish grid and gender quotas based on national figures. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Tagalog, Cebuano, Ilonggo, Ilocano, Bicolano
Fieldwork Dates: April 13 - 28, 2015
Sample Size: 1,000
Margin of Error: 4.1 percentage points
Representative: Adult population 18 plus (excluding small urban areas within the National Capital region and inaccessible areas in the National Capital Region and Mindanao)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Age and education
Design Effects: 1.73
Country: Poland
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are gminas (communities) stratified by province, urbanity and gmina size. Twenty-seven large gminas are selected with certainty. Within these gminas, PSUs are blocks. The number of effective PSUs is 257. Individuals within households are selected using the next birthday method. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Polish
Fieldwork Dates: April 7 - May 13, 2015
Sample Size: 1,028
Margin of Error: 3.5 percentage points
Representative: Adult population 18 plus
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, education and urbanity
Design Effects: 1.28
Country: Russia
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are urban localities and rural settlements stratified by region, urbanity and locality size. Fifteen large cities are selected with certainty. Within these cities, PSUs are districts. The number of effective PSUs is 167. Individuals within households are selected using the last birthday method. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Russian
Fieldwork Dates: April 6 - 17, 2015
Sample Size: 1,002
Margin of Error: 3.6 percentage points
Representative: Adult population 18 plus (excluding High North regions, the Chechen Republic and the Ingush Republic)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, education and urbanity
Design Effects: 1.35
Country: Senegal
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are enumerated areas stratified by region and urbanity. The number of effective PSUs is 125. Individuals within households are selected using a Kish grid. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: French, Wolof
Fieldwork Dates: April 17 - May 12, 2015
Sample Size: 1,000
Margin of Error: 3.7 percentage points
Representative: Adult population 18 plus
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Age
Design Effects: 1.45
Country: South Africa
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are enumeration areas stratified by province, urbanity and metropolitan area. Nine metropolitan areas are selected with certainty. Within these cities, PSUs are enumeration areas. The number of effective PSUs is 250. Individuals within households are selected using a Kish grid and gender quotas based on national figures. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: English, Afrikaans, Zulu, Xhosa, North and South Sotho
Fieldwork Dates: April 8 - 29, 2015
Sample Size: 1,000
Margin of Error: 3.5 percentage points
Representative: Adult population 18 plus
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, home language, race, community size, province and education
Design Effects: 1.30
Country: South Korea
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Random Digit Dial (RDD) probability sample of cell phone users. Interviews are conducted with the person who answered the phone, if age 18 or older. At least 13 phone calls are made to complete the interview with the selected respondent.
Mode: Telephone
Languages: Korean
Fieldwork Dates: April 6 - 19, 2015
Sample Size: 1,005
Margin of Error: 3.2 percentage points
Representative: Adults 18 plus in cell phone households
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age and region
Design Effects: 1.04
Country: Spain
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Listed sample of landline households (70% of sample) stratified by region and community size, and Random Digit Dial (RDD) probability sample of cell phone users (30% of sample). Individuals within landline households are selected using the youngest adult male or female method. Interviews in the cell sample are conducted with the person who answered the phone, if age 18 or older. For both landline and cell samples, at least 10 phone calls are made to complete the interview with the selected respondent.
Mode: Telephone
Languages: Spanish/Castilian
Fieldwork Dates: April 7 - 23, 2015
Sample Size: 1,000
Margin of Error: 3.5 percentage points
Representative: Adults 18 plus in telephone households
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, education, autonomous communities, locality size and probability of selection of respondent
Design Effects: 1.29
Country: Tanzania
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are urban and rural sections of districts stratified by region and urbanity. Three large urban districts in Dar es Salaam are selected with certainty. Within these districts, PSUs are wards. The number of effective PSUs is 100. Individuals within households are selected using the last birthday method. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Swahili
Fieldwork Dates: April 18 - May 13, 2015
Sample Size: 1,000
Margin of Error: 3.9 percentage points
Representative: Adult population 18 plus (excluding some areas with small population)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age and urbanity
Design Effects: 1.55
Country: Turkey
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are urban and rural sections of districts stratified by region, urbanity and settlement size within urban areas. Six large urban districts are selected with certainty. Within these districts, PSUs are neighborhoods. The number of effective PSUs is 98. Individuals within households are selected using the next birthday method. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Turkish
Fieldwork Dates: April 5 - May 15, 2015
Sample Size: 947
Margin of Error: 4.3 percentage points
Representative: Adult population 18 plus (excluding some areas with small populations, and areas of insecurity in Do?u region)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, education, region and urbanity
Design Effects: 1.79
Country: Uganda
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are enumerated areas stratified by region and urbanity. The number of effective PSUs is 100. Individuals within households are selected using a Kish grid. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Luganda, English, Luo, Runyankole/Rukiga, Ateso, Runyoro/Rutoro, Lugbara, Karamojong
Fieldwork Dates: April 9 - 24, 2015
Sample Size: 1,000
Margin of Error: 3.9 percentage points
Representative: Adult population 18 plus
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender and age
Design Effects: 1.57
Country: Ukraine
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are settlements stratified by region. Fifteen large cities are selected with certainty. Within these cities, PSUs are electoral districts. The number of effective PSUs is 204. Individuals within households are selected using the last birthday method. At least three attempts are made to complete the interview with the selected respondent. The sample includes oversamples of Dnipropetrovs'k, Zaporizhzhya and Kharkiv oblasts as well as of three cities: Dnipropetrovs'k, Zaporizhia and Kharkiv. The data are weighted to reflect the actual regional and urbanity distribution in Ukraine.
Mode: Face-to-face
Languages: Ukrainian, Russian
Fieldwork Dates: April 14 - 30, 2015
Sample Size: 2,079
Margin of Error: 2.8 percentage points
Representative: Adult population 18 plus (excluding Donets'k and Luhans'k oblasts, and Crimea)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age and urbanity within region and by region
Design Effects: 1.71
Country: United Kingdom
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Random Digit Dial (RDD) probability sample of landline households (75% of sample) stratified by region, and cell phone users (25% of sample). Individuals within landline households are selected using the youngest adult male or female method. Interviews in the cell sample are conducted with the person who answered the phone, if age 18 or older. For both landline and cell samples, at least 10 phone calls are made to complete the interview with the selected respondent.
Mode: Telephone
Languages: English
Fieldwork Dates: April 8 - 28, 2015
Sample Size: 999
Margin of Error: 3.7 percentage points
Representative: Adults 18 plus in telephone households
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age and probability of selection of respondent
Design Effects: 1.46
Country: United States
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Random Digit Dial (RDD) probability sample of landline households (40% of sample) and cell phone users (60% of sample) stratified by county. Individuals within landline households are selected using the youngest adult male or female method. Interviews in the cell sample are conducted with the person who answered the phone, if age 18 or older. For both landline and cell samples, up to seven phone calls are made to complete the interview with the selected respondent.
Mode: Telephone
Languages: English, Spanish
Fieldwork Dates: April 13 - May 3, 2015
Sample Size: 1,003
Margin of Error: 3.6 percentage points
Representative: Adults 18 plus in telephone households
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Gender, age, education, race, Hispanic origin and nativity, region, population density, phone use and probability of selection of respondent
Design Effects: 1.35
Country: Venezuela
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are parishes stratified by region and parish size. Sixty-six large parishes are selected with certainty. Within these parishes, PSUs are blocks. The number of effective PSUs is 200. Individuals within households are selected using the nearest birthday method and gender quotas based on national figures. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Spanish
Fieldwork Dates: April 6 - May 6, 2015
Sample Size: 1,000
Margin of Error: 3.5 percentage points
Representative: Adult population 18 plus (excluding remote, difficult to reach or unsafe areas)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Age, region and parish size
Design Effects: 1.29
Country: Vietnam
Year: 2015
Survey: Global Attitudes Spring 2015
Sample Design: Multi-stage, area probability design. Primary sampling units (PSUs) are urban wards and rural communes stratified by region and urbanity. The number of effective PSUs is 100. Individuals within households are selected using the last birthday method. At least three attempts are made to complete the interview with the selected respondent.
Mode: Face-to-face
Languages: Vietnamese
Fieldwork Dates: April 6 - May 10, 2015
Sample Size: 1,000
Margin of Error: 4.1 percentage points
Representative: Adult population 18 plus (excluding remote or difficult to reach communes)
Primary Vendor: Princeton Survey Research Associates International
Weighting Variables: Age, gender, education, region and urbanity
Design Effects: 1.77