The Epidemiology of Hip Fracture among Subjects with Pyogenic Liver Abscess (PLA): A Nationwide Population-Based Study

Table 5

Incidence and hazard ratio of hip fracture among the PLA and control cohorts stratified by gender and age.

Variables	PLA						Crude HR (95% CI)	Adjusted HR (95% CI)
	No (N = 102120)			Yes (N = 25530)
	Event	Person-years	Rate^#	Event	Person-years	Rate^#
Gender
Female	1147	227197	50.5	332	50286	66.0	1.32 (1.17, 1.49)	1.18 (1.04, 1.34)
Male	920	386600	23.8	284	87300	32.5	1.37 (1.20, 1.57)	1.25 (1.09, 1.44)
Age, years
<45	22	114174	1.93	20	27187	7.36	3.84 (2.09, 7.03)	2.81 (1.42, 5.56)
45–64	310	296756	10.5	136	67456	20.2	1.97 (1.61, 2.41)	1.23 (0.98, 1.53)
≧65	1735	202867	85.5	460	42944	107.1	1.27 (1.14, 1.40)	1.10 (0.99, 1.23)

PLA: pyogenic liver abscess; HR = hazard ratio, CI = confidence interval. PYs: person-years; rate^#: incidence rate per 10000 person-years. Model adjusted for gender, age, and comorbidities.