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. Author manuscript; available in PMC: 2010 May 3.
Published in final edited form as: Cancer Causes Control. 2008 Nov 15;20(5):509–516. doi: 10.1007/s10552-008-9258-y

Table 1.

Characteristics of the 2,249 HIV-infected white men at baselinea and during follow-up, 1984–2002

Subjects (n = 2,249)
(Baselinea characteristics)
Number (%)b
Person-years
(n = 19,250)
Age (years) 32.8 (28.5/37.9)c
Education
 Less then college degree 1046 (46.5)
 College degree or higher 1178 (52.4)
Use of amphetamines in the past six months
 None 1576 (70.1) 16050 (83.4)
 Monthly or less frequent 527 (23.4) 2036 (10.6)
 Weekly or more frequent 85 (3.8) 404 (2.1)
Use of marijuana in the past six months
 None 573 (25.5) 8806 (45.7)
 Monthly or less frequent 934 (41.5) 5708 (29.7)
 Weekly or more frequent 735 (32.7) 4495 (23.4)
Use of cocaine in the past six months
 None 1297 (57.7) 14859 (77.2)
 Monthly or less frequent 863 (38.4) 3591 (18.7)
 Weekly or more frequent 83 (3.7) 565 (2.9)
Use of amyl nitrites in the past six months
 None 626 (27.8) 10956 (56.9)
 Monthly or less frequent 969 (43.1) 5217 (27.1)
 Weekly or more frequent 85 (3.8) 2828 (14.7)
Tobacco Smoking in the past six months
 No 1327 (59.0) 12621 (65.6)
 <1 pack per day 338 (15.0) 2615 (13.6)
 ≥1 pack per day 575 (25.6) 3972 (20.6)
Alcohol drinking in the past six months
 No 176 (7.8) 1637 (8.5)
 ≤2 times/week 1157 (51.4) 10157 (52.8)
 >2 times/week 900 (40.0) 6030 (31.3)
Number of male sexual partners in the past six months
 <6 1106 (49.2) 14214 (73.8)
 ≥6 1140 (50.7) 4660 (24.2)
Receptive anal sex (RA) in the past six months
 No 341 (15.2) 8691 (45.1)
 RA with use of condoms at all times 235 (10.4) 4409 (22.9)
 RA with inconsistent or no use of condom 1647 (73.2) 5672 (29.5)
Baseline CD4 lymphocyte count (/μl) 578 (422/770)c
a

Baseline defined as the first HIV seropositive study visit

b

Percent may not add up to 100% due to missing values

c

Median (25/75 percentile)