Traditional Chinese Medicine Compound Preparations Are Associated with Low Disease-Related Complication Rates in Patients with Rheumatoid Arthritis: A Retrospective Cohort Study of 11,074 Patients

Table 5

Hazard ratios and 95% confidence intervals of the risk of rheumatoid arthritis-related complications at different exposure times.

Exposure group	Total	Number of complications	HR	95% CI	value
None (<1 month)	3825	2877 (75.2%)	1
Low (1-3 months)	417	271 (65.0%)	0.994	0.868-1.137	0.926
Medium (3-6 months)	395	241 (61.0%)	0.796	0.691-0.918	0.002
High (≥6 months)	2397	1226 (51.1%)	0.699	0.650-0.751	<0.001