Table 4.

Prevalence Ratio of BV by BMI Category Overall and Within Each Race

BMI Category (kg/m2)	BV Prevalence	Prevalence Ratio (95% Confidence Interval)			Black v. White
		Crude	Fully Adjusted*	Final Adjusted**	Interaction p-value
All Women†
< 18.5	27.6%	1.25 (0.98, 1.60)	1.18 (0.92, 1.51)	1.20 (0.94, 1.54)	0.314
18.5–24.9	21.3%	Referent	Referent	Referent	Referent
25–29.9	30.4%	1.28 (1.15, 1.43)	1.23 (1.10, 1.36)	1.25 (1.12, 1.39)	0.024
30–34.9	33.9%	1.36 (1.20, 1.53)	1.26 (1.12, 1.42)	1.31 (1.16, 1.47)	0.001
≥ 35	35.0%	1.31 (1.16, 1.48)	1.20 (1.07, 1.35)	1.25 (1.11, 1.41)	0.002
Black Women
< 18.5	38.9%	1.11 (0.82, 1.50)	1.08 (0.80, 1.46)	1.07 (0.79, 1.45)
18.5–24.9	35.2%	Referent	Referent	Referent
25–29.9	39.1%	1.11 (0.98, 1.26)	1.09 (0.97, 1.24)	1.12 (0.99, 1.27)
30–34.9	39.8%	1.13 (0.99, 1.30)	1.11 (0.97, 1.27)	1.14 (1.00, 1.31)
≥ 35	37.8%	1.07 (0.94, 1.23)	1.03 (0.90, 1.17)	1.07 (0.98, 1.18)
White Women
< 18.5	19.1%	1.53 (0.96, 2.43)	1.37 (0.86, 2.18)	1.44 (0.92, 2.25)
18.5–24.9	12.5%	Referent	Referent	Referent
25–29.9	19.9%	1.59 (1.28, 1.98)	1.42 (1.14, 1.76)	1.44 (1.16, 1.79)
30–34.9	24.7%	1.98 (1.54, 2.53)	1.69 (1.31, 2.17)	1.73 (1.35, 2.22)
≥ 35	24.2%	1.94 (1.47, 2.55)	1.56 (1.18, 2.07)	1.63 (1.23, 2.15)

BV – bacterial vaginosis; BMI – body mass index; statistically significant values are in bold.

^*Fully adjusted model included income, public assistance, trouble paying for basics, education, number of sex partners in the last 30 days, lifetime number of sex partners, current tobacco use, douching in last 30 days, douching in last 180 days, history of sexually transmitted infection, current sexually transmitted infection.

^**Final model adjusted for public assistance, education, current smoker, douching in the last 30 days and sexually transmitted infection at baseline.

^†The All Women models also adjusted for race.