Table 3.
Calculated heterogeneity and effect size of potential risk factors for pulmonary embolism*
| Comorbidity | No. of studies (n) | Pooled patients | I2 (%) | Odds ratio (95% CI) | P value |
|---|---|---|---|---|---|
| Heart failure | 8 | 1989 | 0 | 1.15 (0.68–1.92) | 0.6 |
| Hypertension | 9 | 2065 | 16 | 0.91 (0.67–1.24) | 0.56 |
| Pulmonary disease | 6 | 1639 | 20 | 0.9 (0.48–1.68) | 0.74 |
| Smoking | 6 | 1588 | 0 | 0.66 (0.39–1.1) | 0.11 |
| Diabetes mellitus | 9 | 2065 | 0 | 0.83 (0.6–1.14) | 0.25 |
| Obesity | 5 | 385 | 0 | 1.02 (0.64–1.64) | 0.93 |
| Chronic kidney disease | 5 | 1908 | 0 | 1.02 (0.6–1.75) | 0.93 |
| Cancer | 10 | 2279 | 28 | 0.72 (0.4–1.27) | 0.25 |
| Previous venous thromboembolic history | 9 | 2203 | 1 | 1.48 (0.97–2.26) | 0.07 |
CI, confidence interval.
*All studies included were of high quality.