Table 4.
Follow-up rates in those allocated to more and less relevant (alcohol problems and mental health respectively) secondary outcome questionnaires
| Questionnaire Focus | ||||||
| Alcohol Problems | Mental Health | Alcohol Problems vs Mental Health | ||||
| Follow-up Period | Difference | Odds Ratio | P Value | |||
| Study 1 | ||||||
| 1 month | 1578/2835 (56%) | 489/945 (52%) | 0.04% (0.00%-0.08%) |
1.17 (1.01-1.36) |
.04 | |
| 3 months | 1193/2835 (42%) | 378/945 (40%) | 0.02% (−0.02% to 0.06%) |
1.09 (0.94-1.27) |
.26 | |
| Study 2 | ||||||
| 3 months | 969/1999 (48%) | 308/668 (46%) | 0.02% (−0.02% to 0.07%) |
1.10 (0.92-1.31) |
.29 | |
| 12 months | 660/1999 (33%) | 194/668 (29%) | 0.04% (−0.00% to 0.08%) |
1.20 (0.99-1.46) |
.05 | |
| Pooled analysis of both studies at all four follow-up intervals | 0.03% (0.01%-0.05%) |
1.14 (1.03-1.25) |
.01 | |||
| Pooled analysis adjusted for covariates | 0.03% (0.00%-0.05%) |
1.11 (1.00-1.22) |
.05 | |||