Table 1 Summary of study characteristics
Characteristic | Studies, no. (%) |
|---|---|
Location | |
 East Asia | 9 (25) |
 South Asia | 1 (3) |
 Europe | 15 (42) |
 North America | 10 (28) |
 Other | 1 (3) |
No. of institutions | |
 Single center | 34 (94) |
 Multicenter | 2 (6) |
Sample size (TKA patients only) | |
 < 100 | 13 (36) |
 100–400 | 19 (53) |
 > 400 | 4 (11) |
Type of study | |
 Randomized control trial | 2 (6) |
 Prospective cohort | 21 (58) |
 Retrospective cohort | 5 (14) |
 Cross-sectional | 8 (22) |