Table 2.

Pneumonia severity index class and subject characteristics

	Risk group I (n = 79, 40 %)	Risk group II (n = 59, 30 %)	Risk group III (n = 40, 21 %)	Risk group IV (n = 18, 9 %)	p valueb
Age (mean, SD*)	41 (7)	42 (8)	51 (6)	50 (8)	<0.001
Male sex, %	61	61	93	89	<0.001
African American or black race, %	92	90	87	76	0.09
History of incarceration %	68	71	68	76	0.77
History of homelessness, %	43	48	53	65	0.11
Man who has sex with men, %	22	22	33	41	0.04
No annual income, %	56	52	53	39	0.32
Median CD4 count, [IQRa]	63 [13–130]	92 [41–165]	46 [11–123]	50 [14–140]	0.24
Highly active antiretroviral use, %	28	27	33	50	0.13

Bold values indicate statistically significant differences

^*SD standard deviation

^aIQR interquartile range

^bANOVA comparison across groups