Table 5.

Cox regression models on DMARD retention rates

Predictor	Beta (SE)	HR (95% CI)	P
Re-employment (reference category: original course)	-0.45 (0.21)	0.64 (0.42–0.97)	0.04
MTX dose (per each 2.5 mg/week dose increment)	-0.03 (0.02)	0.97 (0.93–1.00)	0.06
Employment 1999 or later (reference category: 1998 or earlier)	0.49 (0.26)	1.63 (0.97–2.73)	0.06

In total, 172 were evaluated patients. CI, confidence interval; DMARD, disease-modifying antirheumatic drug; HR, hazard ratio; MTX, methotrexate; SE, standard error.