| Author, Year (Reference) | Participants with Diagnosis | Absolute Difference (95% CI) | P Value2 | |
|---|---|---|---|---|
| Intervention Group | Control Group | |||
| % (n/n) | percentage points | |||
| Johnstone and Goldberg, 1976 (14)3 | NR | NR | NR | NR |
| Moore et al., 1978 (15)3 | NR | NR | NR | NR |
| Linn and Yager, 1980 (16)4 | 13 (3/24) | 8 (4/50) | 5 (-11 to 20) | |
| Zung and King, 1983 (17)5 | NR | NR | NR | |
| Magruder-Habib et al., 1990 (18)5 | 3 months: 37 (18/48) | 27 (14/52) | 11 (-8 to 29) | > 0.2 |
| Callahan et al., 1994 (19)5 | 26 (26/100) | 8 (6/75) | 18 (7 to 29) | 0.002 |
| Callahan et al., 1996 (21)5 | 46 (58/127) | 29 (27/94) | 17 (4 to 30) | 0.001 |
| Dowrick, 1995 (20)3 | 27 (14/51) | 21 (13/63) | 7 (-9 to 23) | |
| Lewis et al., 1996 (22)3 | NR | NR | NR | |
| Reifler et al., 1996 (23)3 | NR | NR | NR | |
| Williams et al., 1999 (11)3 | 45 (35/77) | 43 (16/38) | 2 (NR) | > 0.2 |
| Katzelnick et al., 2000 (12) | 82 (179/218) | 32 (61/89) | 50 (41 to 58) | < 0.001 |
| Wells et al., 2000 (24)3 | 59 (NR) | 50 (NR) | 9 (NR) | 0.006 |
| Whooley et al., 2000 (25)3 | 36 (59/162) | 43 (72/169) | -6 (-17 to 4) | > 0.2 |
| Rost et al., 2001 (13) | 69 (NR) | 28 (NR) | 41 (NR) | |
1All figures are rounded to nearest percentage. NR = not reported and cannot be calculated from available data.
2P values were not always reported.
3Denominator is patients who screened positive.
4Denominator is all patients.
5Denominator is patients who screened positive and were confirmed to have major depression on diagnostic interview.