Traditional Chinese Medicine Is Associated with Reduced Risk of Readmission in Rheumatoid Arthritis Patients with Anemia: A Retrospective Cohort Study

Table 3

The Cox proportional hazards model for the readmission of RA patients with anemia.

Variables	Univariate			Multivariate
	HR	95% CI	value	HR	95% CI	value
Age (year)
20–60	1			1
≥60	1.13	0.64–1.89	0.65	1.26	0.69–2.27	0.45
Gender
Male	1			1
Female	1.05	0.53–2.07	0.90	1.03	0.52–2.06	0.93
TCM used
No	1			1
Yes	0.50	0.30–0.84	0.01	0.50	0.27–0.94	0.03
Hypertension	1.23	0.68–2.22	0.50	1.42	0.72–2.78	0.31
Diabetes	0.72	1.18–2.98	0.65	0.52	0.11–2.33	0.39
Hyperlipidemia	1.07	0.46–2.50	0.88	1.00	0.41–2.39	0.09
DMARDs	0.35	0.16–0.77	0.01	0.48	0.19–1.25	0.13
NSAIDs	0.59	0.35–0.99	0.05	0.58	0.32–1.05	0.07
Glucocorticoids	0.96	0.54–1.70	0.88	0.53	0.27–1.04	0.07
Folic acid	1.39	0.75–2.57	0.30	1.69	0.88–3.25	0.11

Note. HR: hazards ratio; 95% CI: 95% confidence interval; TCM: traditional Chinese medicine; DMARDs: disease-modifying antirheumatic drugs; NSAIDs: nonsteroidal anti-inflammatory drugs.