Sensitivity analyses by sample size, risk of bias and comorbidity
| Study removed from the primary meta-analysis | Number of included studies | RR/IRR (95% CI) | Heterogeneity* | |
|---|---|---|---|---|
| Sample size | ||||
| Number of fallers | 522 24 25 29 30 | 11 | 0.83 (0.74 to 0.93) | p=0.12; I2=35% |
| Rate of falls | 422 24 25 30 | 11 | 0.69 (0.57 to 0.83) | p=0.003; I2=62% |
| Risk of bias | ||||
| Number of fallers | 625 29 30 32 34 35 | 10 | 0.76 (0.64 to 0.90) | p=0.02; I2=54% |
| Rate of falls | 525 30 32 34 35 | 10 | 0.65 (0.53 to 0.81) | p=0.007 ; I2=60% |
| Comorbidity | ||||
| Number of fallers | 414 15 24 31 | 12 | 0.83 (0.74 to 0.92) | p=0.27; I2=18% |
| Rate of falls | 414 15 24 31 | 11 | 0.72 (0.61 to 0.85) | p=0.02; I2=54% |
*The results of statistical test for heterogeneity include Q-test (p values in this column) and the I2-index statistic (I2 values in this column).
IRR, incidence rate ratio; RR, risk ratio.