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Table 4 Secondary Outcomes Effect Sizes: Modeling Rate of Change as Linear

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 (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

1.20 (0.30) 1.30 (0.325)

3.00 (0.30) 3.25 (0.325)

ρ = 0.6

1.08 (0.27) 1.16 (0.290)

2.70 (0.27) 2.90 (0.290)