Table 3.

Adjusted Clinicians' Knowledge by Intervention Condition: Baseline and Change^*

Knowledge Measure (% correct)	QI-Meds	QI-Therapy	Usual Care	All	M&U	P&U	M&P	I&U
Overall depression knowledge score (12 items)
Baseline value	75.7 (3.0)	73.5 (3.4)	75.3 (3.1)	.88	.92	.70	.63	.90
Post- minus prechange	4.1 (2.5)	10.5 (2.8)	.60 (2.6)	.04†	.32	.01†	.09†	.06†
General treatment score (3 items)
Baseline value	78.3 (4.2)	73.1 (4.7)	87.3 (4.4)	.09†	.13	.03†	.41	.04†
Post- minus prechange	−.35 (4.0)	9.1 (4.5)	1.7 (4.2)	.28	.72	.24	.12	.75
Antidepressant medication score (6 items)
Baseline value	81.3 (3.4)	80.2 (3.8)	78.0 (3.5)	.79	.50	.68	.84	.51
Post- minus prechange	2.6 (2.8)	7.1 (3.1)	.78 (2.9)	.33	.64	.14	.29	.30
Psychotherapy score (3 items)
Baseline value	62.2 (5.9)	59.3 (6.5)	56.2 (6.0)	.76	.46	.73	.73	.51
Post- minus prechange	12.7 (4.6)	19.5 (5.1)	−.99 (4.7)	.01†	.04†	.004†	.32	.006†

^*N = 109 for multivariate models. Clinic-level clustering accounted for in all estimates, standard errors (in parentheses), and tests. Two-sided P values for F-test comparison across all three intervention conditions shown in “All” column; 2-sided P values for pairwise comparisons shown in columns: M&U for QI-meds vs usual care; P&U for QI-therapy vs usual care; M&P for QI-meds vs QI-therapy; and I&U for interventions combined vs usual care. Adjusted for randomization blocks, demographics, training, depression caseload, patient case mix aggregated to the clinician level, and readiness to change.

^†P values < .10.