From: Does persistence to methotrexate treatment in early rheumatoid arthritis have a familial component?
Full siblings | Validated against NPR and PDR | |||||||
---|---|---|---|---|---|---|---|---|
MTX persistence at 1 year | MTX persistence at 3 years | MTX persistence at 1 year | MTX persistence at 3 years | |||||
Persistent N = 97 | Not persistent N = 54 | Persistent N = 73 | Not persistent N = 78 | Persistent N = 142 | Not persistent N = 58 | Persistent N = 109 | Not persistent N = 91 | |
RR (95% CI) | 1.12 (0.84–1.50) | 1.67 (1.16–2.40) | 1.07 (0.88–1.31) | 1.26 (0.97–1.63) | ||||
h2 (95% CI) | 0.40 (0a–0.90) | 1.00a (0.65–1.00a) | 0.23 (0.00a–0.73) | 0.45 (0.05–0.84) |