Table 1. General characteristics of the included studies.
| Study | Population | Sample size (IG/CG) | Mean age IG/CG (SD) | % Female IG/CG | Setting (n) | Country |
|---|---|---|---|---|---|---|
| Aragonès et al. 2014 [33, 76, 77] | Patients with major depression | 338 (166/126) | 47.5 (15.5) / 47.8 (14.9) | 81.0 / 77.2 | PCC (20) | Spain |
| Araya et al. 2006 [34] | Female patients aged 18–70 with major depression | 240 (96/95) | 44.1 (12.1) / 42.0 (13.7) | 100.0 | PCC (3) | Chile |
| Bosmans et al. 2014 [35] | Elderly residential home residents at risk of major depression and/or anxiety disorder | 185 (93/92) | 84.0 (6.7) / 84.0 (6.4) | 72.0 / 74.0 | Residential homes | NL |
| Donohue et al. 2014 [51, 78, 79] | Post-CABG patients with depressive symptoms | 189 (90/99) | 66.9 (9.0) / 67.1 (11.5) | 36.0 / 41.0 | PCP | USA |
| Goorden et al. 2013 [36, 80] | Sick-listed employees with major depression | 126 (65/61) | 41.9 (11.4) / 43.4 (11.4) | 53.8 / 54.1 | Occupational Health Care | NL |
| Green et al. 2014 [50, 81, 82] | Patients with major depression | 581 (276/305) | 45.0 (13.2) / 44.5 (13.4) | 73.2 / 70.8 | PCP (49) | UK |
| Hay et al. 2012 [20, 37] | Low income patients with major depression and diabetes | 387 (193/194) | Not given | 85.5 / 79.8 | PCC (2) | USA |
| Katon et al. 2012 [38, 83] | Patients with major depression and diabetes and/or CHD | 214 (106/108) | 57.4 (10.5) / 56.3 (12.1) | 48.0 / 56.0 | PCC (14) | USA |
| Katon et al. 2005 [39, 84, 85] | Patients aged ≥60 with major depression and/or dysthymia | 1801 (906/895) | 71.0 (7.4) / 71.4 (7.5) | 65.0 / 64.0 | PCC (18) | USA |
| Liu et al. 2003 [40] | Patients with major depression and/or dysthymia | 354 (168/186) | 57.8 (13.5) / 56.6 (14.2) | 95.0 / 96.0 | PCC (1) | USA |
| Pyne et al. 2010 [21, 22, 41] | Patients with major depression | 320 (141/179) | 58.8 (11.4) / 60.0 (11.7) | 5.0 / 11.0 | PCP (89) | USA |
| Rost et al. 2005 [42, 86, 87] | Patients with major depression | 211 (115/96) | 43.1 (14.8) | 84.4 | PCP (12) | USA |
| Schoenbaum et al. 2001 [43, 88, 89] | Patients with major depression | 1356 (424+489/ 443) | 44.5 (15.5) / 42.2 (13.9) | 71.6 / 69.0 | PCP (48) | USA |
| Simon et al. 2007 [44, 90, 91] | Patients with major depression and diabetes | 329 (165/164) | 58.0 (12.0) / 57.0 (12.0) | 35.0 / 34.0 | PCC (9) | USA |
| Simon, Katon et al. 2001 [45, 92] | Patients with depressive symptoms | 228 (110/109) | 47.0 (14.0) | 74.0 | PCC (4) | USA |
| Simon, Manning et al. 2001 [46] | Patients with major depression | 407 (218/189) | 45.6 (8.6) / 45.4 (9.6) | 77.0 / 78.0 | PCC (7) | USA |
| van der Weele et al. 2012 [47] | Patients aged ≥75 with untreated depressive symptoms | 239 (121/118) | 80.0 / 80.0 | 70.0 / 75.0 | PCP (67) | NL |
| van't Veer-Tazelaar et al. 2010 [48, 93] | Patients aged ≥75 at risk of major depression and anxiety disorder | 170 (86/84) | 81.8 (3.8) / 81.1 (3.5) | 69.8 / 77.4 | PCP (33) | NL |
| Von Korff et al. 1998 [13, 49, 52] * | Patients with major depression | 91 (49/42) | 43.2 (15.4) / 42.3 (12.7) | 77.5 / 88.1 | PCC (1) | USA |
| 65 (31/34) | 43.1 (9.3) / 44.8 (15.9) | 77.4 / 73.5 |
CABG = Coronary Artery Bypass Graft, CHD = Coronary Heart Disease, IG = Intervention Group, CG = Control Group, PCC = Primary Care Clinic, PCP = Primary Care Practice, NL = the Netherlands, UK = United Kingdom
*Analysis was based on two RCT