The PRogram In Support of Moms (PRISM): study protocol for a cluster randomized controlled trial of two active interventions addressing perinatal depression in obstetric settings

Table 1 Results of the factors used in matching during Randomization and presented by intervention arm

Factor	Mean (SD)		Difference	P-value
Factor	MCPAP for Moms (n = 5 practices)	PRISM (n = 5 practices)	Difference	P-value
EPDS Score*	14.19 (0.91)	14.92 (2.31)	−0.74	0.53
Prevalence Depression	23.1 (6.66)	20.01 (5.92)	3.08	0.61
Prevalence Public Insurance	48.76 (32.16)	57.95 (36.4)	−9.18	0.68
Prevalence Non-White	36.38 (16.95)	42.51 (23.75)	−6.14	0.69
Practice Readiness Index^≠	7.07 (1.99)	8.27 (0.82)	−1.20	0.25

Table 1 represents the results of the reweighted Mahalanbois Distance/Covariate Adaptive matching procedure. Matching was done on the five factors deemed most relevant a priori to matching procedures. Factors are reported as mean (standard deviation) by intervention arms in addition to differences and associated p-values. Intervention arms were the PRogram In Support of Moms (PRISM) versus Massachusetts Child Psychiatry Access Program (MCPAP) for Moms interventions. *Mean Edinburgh Postnatal Depression Scale (EPDS) score among those with an EPDS ≥10. ^≠ The Practice Readiness Index (PRI) was a cumulative score (total possible 16 points) derived from the multi-component Practice Readiness to Evaluate and address Perinatal Depression (PREPD) scale.

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