Table 1.

Demographic and sexual behavioral characteristics associated with bacterial vaginosis

Characteristic	N*	Percent with bacterial vaginosis
Ethnicity
African-American	2872	44.5
Other	724	24.2
Completed years of education
<12	1274	41.2
12	1391	43.6
>12	925	34.5
Marital Status
Never married	2523	42.0
Currently married	585	31.3
Other	488	42.8
Cigarettes per day
0	2385	38.5
1–9	790	46.8
10+	399	39.1
Frequency of alcohol drinking
None	1510	38.2
Less than weekly	1156	37.5
Weekly or more	923	47.4
Hormonal contraception
Yes	1756	34.8
No	1840	45.8
Tubal ligation
Yes	560	49.6
No	3033	38.6
Frequency of vaginal intercourse in past six months (per week)
0	476	31.3
1	1048	41.5
2–3	1042	40.4
4–6	706	40.1
7+	293	50.5
Male sex partners in past six months
0	487	31.6
1	2544	40.8
2+	553	46.5
Frequency of receptive oral sex in past six months (per week)
0	2219	41.1
1	687	37.4
2+	648	41.1
New sex partner in past six months
Yes	206	33.0
No	3282	40.8

^*3620 women had a baseline study visit. Numbers for each characteristic do not sum to 3620 due to missing data for that characteristic or for bacterial vaginosis.