3. Results for univariate meta‐regression for all‐cause mortality.
| Explanatory variable (n trials) | Exp (slope)* | 95% confidence interval, P value |
Proportion of variance explained (adjusted R2) |
Interpretation |
| Case mix (% MI patients) (n = 46) | RR = 1.00 | 1.00 to 1.00, P = 0.15 | 56.1% | No evidence that risk ratio is associated with case mix |
| Dose of exercise (number of weeks of exercise training x average number of sessions/week x average min/session) (n = 33) | RR = 1.00 | 1.00 to 1.00, P = 0.11 | 100% |
No evidence that risk ratio is associated with type of CR |
| Duration of follow‐up (months) (n = 47) | RR = 1.00 | 1.00 to 1.00, P = 0.07 | 100% | No evidence that risk ratio is associated with length of follow‐up |
| Type of CR (exercise only vs comprehensive CR) (n = 47) | RR = 1.04 | 0.84 to 1.31, P = 0.70 | ‐27.1% | No evidence that risk ratio is associated with type of CR |
| Year of publication (pre‐1995 vs post‐1995) (n = 47) | RR = 0.84 | 0.70 to 0.99, P = 0.04 | 100% | No evidence that risk ratio is associated with publication year |
| CR setting (n = 47) | RR = 0.95 | 0.82 to 1.24, P = 0.95 | ‐11.3% | No evidence that risk ratio is associated with type of CR |
| Risk of bias (low risk in ≤ 3 items vs > 3 items) (n = 47) | RR = 1.02 | 0.94 to 1.09, P = 0.67 | ‐68.55% | No evidence that risk ratio is associated with risk of bias |
| Study location (continent ‐ Europe, North America, Australia/Asia or Other) (n = 47) | RR = 1.01 | 0.86 to 1.19, P = 0.93 | ‐41.24% | No evidence that risk ratio is associated with study location |
| Low‐ and middle‐income country (LMIC) vs high‐income country (n = 47) | RR = 1.02 | 0.70 to 1.48, P = 0.93 | ‐45.10% | No evidence that risk ratio is associated with LMIC |
| Sample size (≤ 150 vs > 150) (n = 47) | RR = 1.19 | 0.73 to 1.93, P = 0.47 | 16.07% | No evidence that risk ratio is associated with study sample size |