Table 3.
Reduction in Depressive Symptoms 3 and 9 Months After ACSa
| Intervention vs Usual Care Group |
||||||
|---|---|---|---|---|---|---|
| Variable | Usual Care Group (n=77) | Intervention Group (n=80) | Between-Group Difference | t Value | P Value | Nondepressed Cohort (n=80) |
| Depressive symptom score at 3 mo | 19.6 (18.2 to 21.1) | 19.0 (17.5 to 20.4) | −0.7 (−2.7 to 1.4) | 0.64 | .52 | 2.8 (2.3 to 3.3) |
| Depressive symptom score at 9 mo | 17.7 (15.6 to 19.7) | 13.2 (11.1 to 15.3) | −4.5 (−7.4 to −1.6) | 3.03 | .003 | 3.4 (2.4 to 4.3) |
| Change in depressive symptom score overall | −1.9 (−3.8 to −0.1) | −5.7 (−7.6 to −3.8) | −3.8 (−6.5 to −1.2) | 2.85 | .005 | 0.5 (−0.3 to 1.4) |
| Men only (n = 73) | −1.2 (−3.9 to −1.5) | −4.8 (−7.6 to −2.0) | −3.6 (−7.5 to 0.3) | 1.83 | .07 | … |
| Women only (n = 84) | −2.6 (−5.1 to 0.0) | −6.5 (−9.1 to −4.0) | −4.0 (−7.6 to −0.3) | 2.16 | .03 | … |
| Hispanic only (n = 68) | −1.6 (−4.4 to 1.3) | −5.1 (−7.9 to −2.2) | −3.5 (−7.6 to 0.5) | 1.71 | .09 | … |
| African American only (n = 29) | −1.5 (−5.3 to −2.4) | −7.9 (−12.7 to −3.1) | −6.4 (−12.6 to −0.2) | 2.05 | .04 | … |
Abbreviations: ACS, acute coronary syndrome; ellipses, not applicable.
a
Data are presented as mean (95% confidence interval) unless otherwise indicated. Depressive symptom scores were assessed using the Beck Depression Inventory.25 Multilevel linear mixed models were used to estimate a group × time repeated-measures analysis of variance for the Beck Depression Inventory. Significance tests for change in depressive symptom scores are tests of the group × time interaction effect.