Official Journal of the Italian Society of Orthopaedics and Traumatology
Table 2 The quality assessment according to the Newcastle Ottawa Quality Assessment Scale (NOQAS) of each study
From: Risk factors for preoperative deep venous thrombosis in hip fracture patients: a meta-analysis
Study | Selection | Comparability | Exposure | Total score |
|---|---|---|---|---|
Shin [10] | 3 | 3 | 2 | 8 |
Zhang [11] | 3 | 3 | 2 | 8 |
Zhao [14] | 3 | 2 | 3 | 8 |
Cho [16] | 2 | 3 | 3 | 8 |
Fan [17] | 3 | 2 | 3 | 8 |
Fan [18] | 3 | 2 | 2 | 7 |
Fu [19] | 3 | 3 | 2 | 8 |
Luksameearunothai [20] | 3 | 2 | 3 | 8 |
Niu [21] | 3 | 3 | 2 | 8 |
Song [22] | 3 | 2 | 3 | 8 |
Tan [23] | 3 | 2 | 3 | 8 |
Wang [24] | 2 | 3 | 2 | 7 |
Xia [25] | 3 | 2 | 3 | 8 |
Yu [26] | 3 | 2 | 2 | 7 |
Zeng [27] | 3 | 3 | 2 | 8 |
Zuo [28] | 3 | 2 | 3 | 8 |
Zheng [29] | 3 | 2 | 3 | 8 |
Khan [30] | 3 | 2 | 2 | 7 |
Xing [31] | 3 | 3 | 2 | 8 |
Zhang [32] | 3 | 2 | 3 | 8 |
Yue [33] | 2 | 3 | 3 | 8 |
Wei [34] | 3 | 2 | 3 | 8 |
Zhang [35] | 3 | 2 | 3 | 8 |
Zhang [36] | 3 | 2 | 3 | 8 |
Guo [37] | 2 | 3 | 2 | 7 |
An [38] | 2 | 3 | 2 | 7 |