. Author manuscript; available in PMC: 2022 Mar 22.

Published in final edited form as: J Am Med Dir Assoc. 2021 Sep 25;23(3):517–518. doi: 10.1016/j.jamda.2021.08.040

Table 1.

Crude and Standardized Incidence Rates (per 100 Person-Years) for Hip Fracture by Age Group and HIV Status

	Age <65 y (n = 35,369)		Age ≥65 y (n = 221,564)
	HIV+ (n = 2734)	HIV− (n = 32,635)	HIV+ (n = 2501)	HIV− (n = 219,063)
Hip fracture events, n (%)	31 (1.13)	282 (0.86)	51 (2.04)	4395 (2.01)
Mean follow-up years (SD)	2.01 (1.20)	2.10 (1.16)	1.70 (1.14)	1.66 (1.14)
Death, n (%)	963 (35.2)	9884 (30.3)	1206 (48.2)	112,410 (51.3)
Crude IRs per 100 person-years (95% CI)^*	0.56 (0.40-0.80)	0.41 (0.36-0.46)	1.20 (0.91-1.58)	1.21 (1.17-1.24)
IPW standardized IRs per 100 person-years (95% CI)	0.47 (0.30-0.79)	0.41 (0.36-0.46)	1.06 (0.71-1.67)	1.20 (1.17-1.24)
Regular Cox proportional regression, HR (95% CI)	1.12 (0.70-1.81)	1	0.90 (0.59-1.35)	1
Fine and Gray competing risk model, HR (95% CI)^†	1.31 (0.90-1.89)	1	1.02 (0.78-1.34)	1

IPW, inverse probability weight; IR, incidence rate; SD, standard deviation.

95% CIs for the IRs of each group were calculated using the nonparametric bootstrap with 1000 replicates.

^†

Hazard ratios were obtained using the Fine and Gray competing risk model in an IPW cohort. Final models were further adjusted for BMI category, which was not adequately balanced through the IPW approach.