Table 1. Study Participant Characteristics (n = 2804).

Characteristic		n	Percent
Age at entry (years Median (IQR))		40.2	(34.1,46.4)
Sex	Female	310	11
	Male	2494	89
Race/Ethnicity	White	1730	62
	Hispanic	490	17
	Black	357	13
	Other/Unknown	227	8
HIV Risk Factor	MSM1	2180	78
	IDU2 (not MSM)	133	5
	Heterosexual (not IDU)	367	13
	Other/Unknown	122	4
Baseline CD4	<350/mm3	1230	44
	≥350/mm3	1551	55
	missing	23	1
Baseline HIV viral load	≤400 copies/mm3	1365	49
	>400 copies/mm3	1412	50
	missing	27	1
On antiretroviral therapy	Yes	2807	75
	No	707	25
Smoking	Yes	837	30
	No	1967	70
Baseline cytology result3	NAMC	829	29
	ASCUS	919	33
	LSIL	663	24
	ASC-H	76	3
	HSIL	317	11
≥1 IRC4 after first cytology	Yes	218	8
	No	2586	92
No. cytology results/patient	Median (IQR)	5	(3,8)

^1.MSM: men having sex with men.

^2.IDU: injection drug use.

^3.NAMC: no atypical or malignant cells; ASCUS: atypical squamous cells of uncertain significance; LSIL: low grade squamous intraepithelial lesion; ASC-H: atypical squamous cells, can't exclude high grade; HSIL: high grade squamous intraepithelial lesion.

^4.IRC: infrared coagulation.