Table 1.
Baseline characteristics of groups randomized to four secondary outcome measures
| Secondary Outcome Measure | ||||||
| Baseline Characteristic | AUDIT | LDQ | APQ | CORE-OMa | CORE-10a | CORE-OM or CORE-10a |
| Number | 1614 | 1607 | 1613 | 945 | 668 | 1613 |
| Female (%) | 58 | 55 | 57 | 55 | 60 | 57 |
| Intervention (%) | 50 | 49 | 50 | 53 | 50 | 52 |
| Heavy drinking (%) | 62 | 62 | 61 | 59 | 62 | 61 |
| Educated to degree level (%) | 50 | 53 | 52 | 50 | 48 | 49 |
| White British (%) | 84 | 84 | 85 | 84 | 84 | 84 |
| Provided postal address (%) | 36 | 34 | 35 | 35 | 35 | 35 |
| Intentions score, median (interquartile range) | 4 (2) | 4 (2) | 4 (2) | 4 (2) | 4 (2) | 4 (2) |
| Age, mean (SD) | 37.9 (10.7) | 37.9 (10.6) | 38.0 (10.9) | 37.0 (11.0) | 37.4 (10.6) | 37.2 (10.9) |
| Health state, mean (SD) | 67.4 (22.6) | 66.9 (27.1) | 67.4 (23.2) | 70.8 (46.0) | 66.2 (22.9) | 68.9 (38.3) |
| Past week alcohol consumption (UK units), mean (SD) |
56.2 (37.9) | 57.2 (37.4) | 56.8 (40.4) | 54.8 (36.3) | 56.6 (37.7) | 55.5 (36.9) |
aCORE-OM was used in study 1, CORE-10, in study 2