Author | Year | Country | Study design | Study period conducted | Setting | Age, mean (y) | Gender, male (%) | Ethnicity, white (%) | Randomized sample size (Intervention/control) | Follow-up | Loss to follow-up based on primary outcome (%) | Intention-to-treat analysis |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bogner et al. [26] | 2012 | US | RCT | From April 2010 to April 2011 | 3 Primary care practices | 57 | 58 (32) | 65 (36) | 92/88 | 6, 12 wk | Intervention group: 0/92 (0%) | Used |
Control group: 0/88 (0%) | ||||||||||||
Bogner et al. [27] | 2010 | US | RCT | From April 2007 to June 2008 | 1 Primary care practice | 60 | 9 (16) | 0 (0)* | 29/29 | 6 wk | Intervention group: 0/29 (0%) | Not used |
Control group: 0/29 (0%) | ||||||||||||
Ciechanowski et al. [31] | 2006 | US | RCT | Not clear | 9 health maintenance organization clinics | 58 | 112 (36) | 248 (78) | 160/164 | 3, 6, 12 mo | Intervention group: 0/160 (0%) | Used |
Control group: 0/164 (0%) | ||||||||||||
Ell et al. [32] | 2011 | US | RCT | From August 2005 to August 2007 | 2 public safety-net clinics | Not clear** | 69 (18) | Not clear*** | 193/194 | 6, 12, 18, 24 mo | Intervention group: 55/193 (28.5%) | Used |
Control group: 68/194 (35.1%) | ||||||||||||
Katon et al. [19] | 2010 | US | RCT | From May 2007 to October 2009 | 14 Primary care clinics | 57 | 103 (48) | 169 (79) | 106/108 | 6, 12 mo | Intervention group: 12/106 (11.3%) | Used |
Control group: 16/108 (14.8%) | ||||||||||||
Katon et al. [23] | 2004 | US | RCT | From March 2001 to May 2002 | 9 Primary care clinics | 58 | 115 (35) | 260 (79) | 164/165 | 3, 6, 9, 12 mo | Intervention group: 21/164 (13%) | Used |
Control group: 16/165 (9.7%) | ||||||||||||
Kinder et al. [33] | 2006 | US | RCT | Not clear | Primary care clinics | 58 | 115 (35) | 248 (75) | 164/165 | 6, 12 mo | Intervention group: 18/164 (11.0%) | Not used |
Control group: 23/165 (13.9%) | ||||||||||||
Williams Jr et al. [28] | 2004 | US | RCT | From July 1999 to August 2001 | 18 Primary care clinics | 70 | 194 (47) | 265 (64) | 205/212 | 3, 6, 12 mo | Intervention group: 5/205 (2.4%) | Used |
 |  |  |  |  |  |  |  |  |  |  | Control group: 19/212 (9.0%) |  |