Table 4.

Associations of demographic group and covariates with incidence rate of hospitalization in Analysis B (>1 year after HIV diagnosis).

				Unadjusted		Adjusteda
	Events	PY	Rate/100 PY	IRR (95% CI)	P	IRR (95% CI)	P
Demographic group
MSM	359	16 410	2.19	1.0	<0.0001	1.0	<0.0001
Black African MSW	80	2265	3.53	1.62 (1.15–2.27)		1.68 (1.19–2.38)
Other ethnicity MSW	109	2445	4.46	2.04 (1.52–2.74)		2.06 (1.53–2.78)
Black African women	130	4418	2.94	1.35 (1.04–1.75)		1.46 (1.13–1.88)
Other ethnicity women	94	2751	3.42	1.58 (1.16–2.15)		1.66 (1.23–2.25)
Current age
≤35	88	3181	2.77	1.0	0.0065	1.0	0.0026
36–50	404	16 162	2.50	0.90 (0.69–1.17)		0.93 (0.70–1.24)
51–65	218	7892	2.76	0.98 (0.74–1.31)		1.11 (0.79–1.56)
>65	62	1054	5.88	2.08 (1.41–3.06)		2.37 (1.56–3.60)
Current calendar year
2017–2018	23	2274	1.01	1.0	<0.0001	1.0	<0.0001
2015–2016	160	5925	2.70	2.79 (1.71–4.54)		2.90 (1.78–4.72)
2013–2014	105	5695	1.84	1.90 (1.15–3.12)		2.07 (1.25–3.43)
2011–2012	152	5355	2.84	2.91 (1.78–4.77)		3.33 (2.01–5.51)
2009–2010	161	4911	3.28	3.39 (2.07–5.55)		4.02 (2.42–6.68)
2007–2008	171	4106	4.16	4.32 (2.66–7.02)		5.26 (3.18, 8.71)
Current years since diagnosis
>1–5	150	4849	3.09	1.0	0.5265	1.0	0.2908
>5–10	199	7753	2.57	0.83 (0.64–1.08)		0.88 (0.67–1.15)
>10–20	317	12 004	2.64	0.85 (0.66–1.08)		1.01 (0.77–1.32)
>20	106	3684	2.88	0.92 (0.67–1.27)		1.24 (0.86–1.79)
CD4+ cell count at diagnosis (cells/μl)
>800	33	1290	2.56	1.0	<0.0001	1.0	<0.0001
500–800	70	4332	1.62	0.63 (0.37–1.08)		0.61 (0.35–1.05)
350–499	88	3778	2.33	0.91 (0.54–1.54)		0.85 (0.51–1.44)
200–349	90	4441	2.03	0.79 (0.48–1.32)		0.72 (0.43–1.20)
50–199	96	3886	2.47	0.97 (0.58–1.63)		0.75 (0.44–1.27)
<50	76	2527	3.01	1.18 (0.71–1.98)		0.92 (0.54–1.57)
Missing	319	8035	3.97	1.57 (0.99–2.49)		1.47 (0.92–2.35)

CI, confidence interval; IRR, incidence rate ratio; MSM, men who have sex with men; MSW, men who have sex with women; PY, person-years of observation.

^aAdjusted for demographic group, current age, current calendar year, current years since diagnosis.