Study | Representativeness of the Sample | Clinical Confirmation of RA | Appropriate Accounting for Loss to Followup | Completeness and Accuracy of Data | Appropriateness of Adherence Measure | Appropriate Accounting for Confounders |
---|---|---|---|---|---|---|
Prospective studies | ||||||
de Klerk, et al19 | + | ? | ? | + | + | ? |
de Thurah, et al23 | + | + | ? | +/− | +/− | + |
Contreras-Yáñez, et al9 | − | ? | + | +/− | − | +/− |
Marwaha, et al24 | − | ? | − | − | − | NA |
Waimann, et al12 | − | + | ? | + | + | NA |
Pasma, et al25 | + | + | +/− | + | + | NA |
De Cuyper, et al26 | +/− | + | +/− | + | + | + |
Retrospective studies | ||||||
Harley, et al20 | + | − | ? | +/− | +/− | NA |
Grijalva, et al21 | − | − | − | +/− | +/− | NA |
de Thurah, et al22 | + | − | ? | +/− | +/− | + |
Cannon, et al11 | − | + | ? | +/− | +/− | − |
Mueller, et al27 | + | ? | ? | ? | +/− | NA |
RA: rheumatoid arthritis; +/−: adequate; ?: unclear; NA: not applicable.