Table 2.
Prevalence of recent consumption of alcohol* during Waves 1 thru 4 of the surveys, stratified by sex, age group, and region of the respondents (Percent ± SE).
| Measure | Wave 1 (mid-Apr) | Wave 2 (mid-May) | Wave 3 (mid-June) | Wave 4 (late July) | P-for-trend* |
|---|---|---|---|---|---|
| (n = 637) | (n = 600) | (n = 606) | (n = 602) | ||
| Sex | |||||
| Male | 44.3 ± 2.4 | 43.7 ± 2.4 | 29.8 ± 2.2 | 36.5 ± 2.3 | <0.001 |
| Female | 57.3 ± 3.4 | 54.1 ± 3.8 | 50.9 ± 3.9 | 39.9 ± 3.8 | 0.002 |
| Age group | |||||
| 15−19 years (underaged) | 66.5 ± 13.6 | 61.5 ± 13.5 | 52.6 ± 11.5 | 44.4 ± 16.6 | 0.272 |
| 20−29 years | 45.8 ± 3.7 | 55.7 ± 4.0 | 34.7 ± 4.4 | 37.2 ± 4.1 | 0.023 |
| 30−39 years | 49.0 ± 3.7 | 43.2 ± 3.7 | 32.9 ± 3.7 | 36.9 ± 4.0 | 0.005 |
| 40−49 years | 46.9 ± 4.1 | 47.5 ± 3.9 | 35.6 ± 3.8 | 33.2 ± 3.7 | 0.003 |
| 50−59 years | 50.0 ± 5.6 | 33.7 ± 5.4 | 36.4 ± 4.4 | 43.2 ± 4.9 | 0.466 |
| 60 years or older | 58.8 ± 8.4 | 38.8 ± 11.5 | 36.4 ± 8.4 | 40.5 ± 7.6 | 0.090 |
| Region | |||||
| Bangkok Metropolitan Area | 40.4 ± 5.2 | 52.6 ± 5.7 | 34.2 ± 5.4 | 29.5 ± 4.7 | 0.034 |
| Central | 54.7 ± 4.8 | 40.7 ± 4.4 | 55.6 ± 5.2 | 40.7 ± 5.2 | 0.237 |
| North | 55.4 ± 3.8 | 43.9 ± 4.1 | 19.4 ± 3.4 | 45.4 ± 4.4 | <0.001 |
| Northeast | 43.1 ± 3.5 | 44.7 ± 3.8 | 37.9 ± 3.3 | 38.0 ± 3.4 | 0.155 |
| South | 48.6 ± 6.0 | 59.3 ± 5.5 | 34.5 ± 5.1 | 28.2 ± 5.1 | 0.001 |
*
Excluding never drinkers, Wave 2 survey asked about alcohol consumption “since the first of May”, other Waves asked about alcohol consumption “within past 30 days”; Log-binomial regression for prevalence of not having a drink in past 30 days vs. all other categories within the sub-group.