Study | Inception cohort | Referral pattern | Complete follow-up | Objective outcome criteria | Blind outcome assessment | Multivariate statistical adjustment |
---|---|---|---|---|---|---|
Turnipseed et al, 1980 (21) | Yes | Yes | Yes | No | No | No |
Breslau et al, 1981 (19) | Yes | Yes | Yes | No | No | No |
Barnes et al, 1981 (18) | Yes | Yes | Yes | No | No | No |
Gerraty et al, 1992 (22) | Yes | Yes | Yes | Yes | Yes | No |
Schwartz et al, 1995 (20) | Yes | Yes | Yes | No | No | No |