Table 3 Baseline and follow-up means, standard deviations, and effect sizes for PHQ-8 and suicide item (SI) by group
From: Treating suicidal ideation in the context of depression
Measure | N | Baseline M (SD) | Follow-up M (SD) | Paired differences M (SD) | t-test | Cohen’s d |
|---|---|---|---|---|---|---|
PHQ-8 | ||||||
SI > 0 at baseline | 233 | 15.3 (4.1) | 7.9 (5.1) | 7.4 (5.5) | t(232) = 20.7, p < .001 | 1.59 |
SI = 0 at baseline | 560 | 13.4 (3.1) | 7.4 (4.0) | 6.0 (4.4) | t(559) = 31.3, p < .001 | 1.69 |
Suicide item | ||||||
SI > 0 at baseline | 233 | 1.3 (0.6) | 0.3 (0.6) | 0.9 (0.7) | t(232) = 21.3, p < .001 | 1.54 |