Table 1.

Demographics and clinical characteristics at study entry of 12,290 patients who were linked to care at a CNICS site between January 1, 1998 and December 30, 2011 at eight US clinical sites and followed for death up to 5 years

Characteristics	All patients at study entry (n=12,290)		All patients over 36,418 person-years	Validation subgroup at study entry (n=3686)		Validation subgroup over 12,157 person-years

	n	%	%	n	%	%
Male sex	10034	82	81	3217	87	87
Black race	4841	39	39	1044	28	28
Hispanic ethnicity	1342	11	11	533	14	14
Injection drug user	2295	19	18	538	15	15
MSM	7340	60	60	2652	72	71
AIDS	2132	19	26	487	13	21
CD4 cell count
<250	5131	42	26	1461	40	23
250 – 500	4235	34	40	1344	36	41
>500	2924	24	34	881	24	36
Suppressed viral load ^b	0	0	52	0	0	40
Physician-reported current smoker ^c	4823	39	42	1596	43	45
Patient-reported current smoker ^d	- ^e	- ^e	- ^e	1687	46	44
On therapy	0	0	67	0	0	73
No therapy, nonsmoker ^f	7467	61	20	1999	54	13
No therapy, smoker^f	4823	39	14	1687	46	14
On therapy, nonsmoker^f	0	0	39	0	0	42
On therapy, smoker^f	0	0	28	0	0	31

CNICS: Centers for AIDS Research Network of Integrated Clinical Systems; MSM: men who have sex with men

<500 copies/mL; only patients with unsuppressed viral load at cohort entry were included in the study

Provider-reported smoking was likely measured with error

Patient-reported smoking was the gold-standard measure of smoking status

Patient-reported smoking status was not available for patients outside the validation subgroup

Smoking status is provider-reported smoking status for all patients and patient-reported smoking status for patients in the validation subgroup