Table 2.

Comparison Between Full Cohort and Analytic Cohort

	Participants, No. (%)
Variable	Full Cohort (N = 4074)	Analytic Cohort (N = 2621)
Smoking pack-years (quartiles)
0.1–0.70	408 (24.6)	277 (25.9)
0.71–2.50	415 (25.0)	273 (25.5)
2.51–8.10	407 (24.5)	253 (23.6)
≥8.2	429 (25.9)	267 (25.0)
Monthly alcohol intake, drinks
0	1106 (25.7)	562 (21.9)
1–30	1848 (46.7)	1187 (46.3)
31–60	444 (11.2)	327 (12.8)
≥61	649 (16.4)	486 (19.0)
Female partners in past 3–6 mo
0	847 (22.0)
1	1654 (45.0)	1159 (60.7)
2	519 (14.1)	509 (19.4)
3	262 (7.1)	255 (9.7)
≥4	270 (7.3)	267 (10.2)
Country of residence at enrollment
United States	1343 (33.0)	923 (35.2)
Brazil	1401 (34.9)	936 (35.7)
Mexico	1330 (32.7)	762 (29.1)
Condom use
Always	723 (22.0)	599 (22.9)
More than half the time	504 (15.1)	431 (16.4)
Half the time	245 (7.3)	214 (8.2)
Less than half the time	490 (14.7)	423 (16.1)
Never	1321 (39.6)	954 (36.4)