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Table 5 Secondary outcome effect sizes: modeling rate of change as nonlinear

From: Study protocol for comparing Screening, Brief Intervention, and Referral to Treatment (SBIRT) to referral as usual for depression in African American churches

ρ (average correlation)

QIDS Depression (Cohen’s d)

n = 300; n = 240 per group

PROMIS Depression/poor QoL reduction (Cohen’s d)

n = 300; n = 240 per group

ρ = 0.5

1.048 (0.262) 1.12 (0.281)

2.62 (0.262) 2.81 (0.281)

ρ = 0.6

1.08 (0.270) 1.16 (0.290)

2.70 (0.270) 2.90 (0.290)

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Trials

ISSN: 1745-6215