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Table 2 Summary of survey methods, response rates, and sample sizes

From: Screening and brief intervention for alcohol use disorder risk in three middle-income countries

Country/City

Sample size

Response rate

Survey year and method

Brazil

3,554

54.4%

April-May, 2018. Multi-stage random sample of census tracts and households with replacement, and one adult in each household. Quota sampling to achieve target sample size. In-person computer-assisted interviews with eligible adults.

Brasilia1

2,046

52.9%

Planaltina

1,508

56.5%

China

3,000

56.5%

May-June, 2018. Multi-stage random sample of village committees and households with replacement, and one adult in each household. Quota sampling to achieve target sample size. In-person computer-assisted interviews with eligible adults.

Jiangshan

1,500

47.4%

Lanxi

1,500

69.9%

South Africa

3,190

94.5%

Nov. 2018. Multi-stage random sample of small areas and households with replacement, and one adult in each household. Quota sampling to achieve target sample size based on age, gender, household type, and employment status in each area. In-person computer-assisted interviews with eligible adults.

Alexandra

1,484

92.4%

Tembisa

1,706

96.5%

  1. 1The subdistricts within Brasilia are Ceilândia, Plano Piloto, and Taguatinga