Table 2.
Meta-analysis results for depression, quality of life, mortality and hospitalisations
| Outcome | Number of studies | Number of participants | Statistical method used | Effect estimate, mean, risk ratio (95% CI) | p value | Heterogeneity, I 2 (%) |
|---|---|---|---|---|---|---|
| Depression (initially after CBT) | ||||||
| BDI-II | 4 | 203 | Standardised mean difference (fixed effects) | −0.35 (−0.63 to −0.07) | 0.01 | 0 |
| All scales | 5 | 235 | Standardised mean difference (fixed effects) | −0.34 (−0.60 to −0.08) | 0.01 | 0 |
| Depression (3 months after CBT) | ||||||
| BDI-II | 4 | 174 | Standardised mean difference (fixed effects) | −0.30 (−0.61 to −0.00) | 0.05 | 0 |
| All scales | 5 | 204 | Standardised mean difference (fixed effects) | −0.32 (−0.59 to −0.04) | 0.03 | 0 |
| QoL (initially after CBT) | ||||||
| MLHFQ | 4 | 88 | Standardised mean difference (fixed effects) | −0.25 (−0.68 to 0.18) | 0.26 | 52 |
| All scales | 5 | 220 | Standardised mean difference (fixed effects) | −0.31 (−0.58 to −0.05) | 0.02 | 38 |
| QoL (3 months after CBT) | ||||||
| MLHFQ | 4 | 78 | Standardised mean difference (fixed effects) | −0.13 (−0.58 to 0.33) | 0.58 | 0 |
| All scales | 5 | 197 | Standardised mean difference (fixed effects) | −0.22 (0.51 to 0.06) | 0.12 | 0 |
| Mortality | ||||||
| All-cause mortality | 4 | 135 | Risk ratio (fixed effects) | 1.05 (0.44 to 2.52) | 0.92 | 0 |
| Hospitalisations | ||||||
| All-cause hospitalisations | 4 | 257 | Risk ratio (fixed effects) | 0.99 (0.75 to 1.32) | 0.96 | 0 |
BDI-II Beck Depression Inventory-revised, CBT cognitive behavioural therapy CI confidence intervals, MLHFQ Minnesota Living with Heart Failure Questionnaire, QoL quality of life