Table 2.
Risk of bias
| Sampling and representativeness of population | Documentation of thromboprophylaxis | Follow-up of patients | Study type | Risk of bias | |
|---|---|---|---|---|---|
| Agnelli et al.43 | + | – | + | + | Low |
| Kwon et al.31 | + | – | – | + | High |
| Merkow et al.42 | + | – | – | + | High |
| Davenport et al.28 | – | – | – | + | High |
| Shah et al.36 | – | – | – | + | High |
| Tzeng et al.38 | + | – | – | + | High |
| Tzeng et al.39 | – | – | – | + | High |
| Lavallée et al.32 | + | – | – | + | High |
| VanDlac et al.40 | – | – | – | + | High |
| Gross et al.41 | + | – | – | + | High |
| Moghadamyeghaneh et al.44 | + | – | – | + | High |
| Kester et al.45 | + | – | – | + | High |
| Martin et al.33 | + | – | – | + | High |
| Moghadamyeghaneh et al.35 | + | – | – | + | High |
| Spaniolas et al.37 | + | – | – | + | High |
| Jordan et al.30 | + | – | – | + | High |
| McAlpine et al.34 | + | – | – | + | High |
| Benlice et al.48 | + | – | – | + | High |
| Herforth et al.29 | + | – | – | + | High |
| Sager et al.46 | + | – | – | + | High |
| Merhe et al.49 | + | – | – | + | High |
| Kumar et al.47 | + | – | – | + | High |
+, Low risk; –, high risk.