Table 3

Analysis of the Studies Included in the Meta-Analysis of Psychological and Educational Interventions to Prevent Depression in Primary Care

Analysis	No.	SMD	95% CI	I²	P Value^a
Sensitivity
At first evaluation	13	−0.166	−0.272 to −0.059	20.6	.002
At last evaluation	13	−0.154	−0.269 to −0.040	20.6	.008
García-Campayo⁴³ excluded	12	−0.143	−0.220 to −0.065	0.00	.000
Brugha⁴⁵ excluded	12	−0.163	−0.262 to −0.065	27.1	.001
García-Campayo⁴³ and Brugha⁴⁵ excluded	11	−0.141	−0.223 to −0.059	4.9	.001
Subgroup
Type of prevention
Indicated	8	−0.134	−0.283 to 0.015	31.9	.715
Selective	4	−0.236	−0.434 to −0.037	29.9
Universal	1	−0.156	−0.293 to −0.020	NA
Country
United States	6	−0.092	−0.280 to 0.097	29.2	.430
Europe	6	−0.211	−0.322 to −0.099	17.9
China	1	−0.068	−0.344 to 0.207	NA
Age
Adults	10	−0.156	−0.268 to −0.045	28.7	.903
Elderly	2	−0.233	−0.588 to 0.121	49.2
Adolescent	1	−0.133	−0.414 to 0.148	NA
Comparator
CAU/no intervention	10	−0.199	−0.297 to −0.100	19.4	.049
Placebo	3	0.039	−0.176 to 0.255	0.00
Clinician
Primary care staff	4	−0.197	−0.346 to −0.048	32.8	.577
Mental health specialists	9	−0.141	−0.272 to 0.010	23.3
Intervention format
Individual	10	−0.139	−0.235 to −0.043	13.8	.327
Group	3	−0.278	−0.539 to −0.017	43.2
Number of sessions
3–6	7	−0.172	−0.377 to 0.033	51.22	.736
7–10	4	−0.193	−0.322 to −0.065	0.00
>10	2	−0.100	−0.297 to 0.097	0.00
Sample size
≤150	5	−0.274	−0.602 to 0.054	58.8	.752
151–280	6	−0.143	−0.269 to −0.017	0.00
>2,000	2	−0.145	−0.254 to −0.035	0.00