Liver Governs Tendon: A Theory from Traditional Chinese Medicine—Evidence from a Population-Based Matched Cohort Study in Taiwan for the Association of Chronic Liver Disease and Common Diseases in the Chiropractic Office

Table 7

Incidence rates and hazard ratio for internal derangement of knee to chronic hepatitis (ICD-9-CM: 571.4) stratified by demographic factors.

Variables	Chronic hepatitis						Crude HR	Adjusted HR
	No			Yes
	()			()
	Event	Person-years	IR	Event	Person-years	IR	(95% CI)	(95% CI)
Total	351	491356	0.71	115	111679	1.03	1.44 (1.17–1.78)	1.3 (1.05–1.60)
Sex
Female	103	159678	0.65	39	36969	1.05	1.63 (1.13–2.36)	1.48 (1.02–2.15)
Male	248	331677	0.75	76	74709	1.02	1.36 (1.05–1.76)	1.21 (0.93–1.57)
Age, years
18–39	233	316611	0.74	72	73583	0.98	1.33 (1.02–1.73)	1.24 (0.95–1.61)
40–64	105	162879	0.64	39	35647	1.09	1.7 (1.17–2.45)	1.47 (1.01–2.12)
More than 65	13	11865	1.10	4	2448	1.63	1.5 (0.49–4.6)	1.04 (0.33–3.23)
Major trauma	321	349749	0.92	108	88406	1.22	1.33 (1.07–1.65)	1.3 (1.04–1.61)
Anemic disorder	16	17101	0.94	108	88406	1.22	2.45 (1.27–4.74)	2.32 (1.2–4.5)

IR: incidence rates, per 1,000 person-years; HR: hazard ratio; CI: confidence interval.
Adjusted HR: mutually adjusted for age, gender, and comorbidities in Cox proportional hazards regression.
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