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. Author manuscript; available in PMC: 2010 Sep 1.
Published in final edited form as: Sex Transm Infect. 2009 Mar 26;85(5):348–353. doi: 10.1136/sti.2008.035451

Table 3.

Univariate and multivariate correlates of H2O2-producing Lactobacillus isolation among HIV-1 seronegative women.

UNIVARIATEa MULTIVARIATEa
% of visitsb OR 95%CI OR 95%CI
Demographic
 Age, years
  <25 20.0 reference reference
  25–29 24.2 0.98 0.75–1.29 1.04 0.79–1.37
  30–34 24.7 0.70 0.51–0.96 0.78 0.54–1.14
  35–39 17.0 0.67 0.45–1.01 0.74 0.48–1.12
  ≥40 14.2 0.43 0.24–0.77 0.46 0.27–0.79
 Education 8 years 64.0 0.88 0.68–1.13
 Parity
  0 16.3 reference
  1 29.8 0.66 0.46–0.94 0.83 0.58–1.18
  ≥2 53.9 0.77 0.55–1.08 1.20 0.85–1.70
Substance use
 Tobacco, cigarettes per day
  0 77.6 reference reference
  1–9 13.9 1.39 1.02–1.88 1.31 0.96–1.79
  ≥ 10 8.5 1.21 0.82–1.79 1.21 0.83–1.76
 Alcohol, drinks per week
  0 21.6 reference reference
  1–7 39.2 0.54 0.39–0.75 0.61 0.43–0.87
  >7 39.2 0.73 0.53–0.99 0.83 0.60–1.14
Vaginal cleansing
 None 11.5 reference reference
 Water 25.9 0.72 0.48–1.11 0.64 0.41–1.01
 Soap/other 62.6 0.65 0.46–0.91 0.58 0.40–0.85
Sexual behavior
 Number of sex partners, past week
  0 40.2 reference
  1 45.0 1.03 0.85–1.26
  >1 14.8 1.14 0.90–1.45
 Unprotected sex, past week 20.9 0.84 0.66–1.07
 Lubrication used for sex 20.0 1.04 0.75–1.43
 Sex during menses 10.1 0.69 0.44–1.09
Contraception
 None 64.9 reference
 Oral contraceptive pill 13.1 1.10 0.81–1.50
 Depot medroxyprogesterone acetate 19.5 1.17 0.90–1.51
 Intrauterine device 1.1 0.86 0.35–2.13
 Norplant 1.4 1.06 0.46–2.48
Concurrent genital tract infections
Neisseria gonorrhoeae 2.2 1.15 0.68–1.93
Chlamydia trachomatisc 1.6 0.75 0.31–1.86
 Cervicitis 5.7 1.43 1.03–2.00 1.39 1.00–1.90
 Bacterial vaginosis 34.8 0.60 0.49–0.73 0.62 0.51–0.76
Trichomonas vaginalis 5.0 0.60 0.30–0.94 0.62 0.39–1.00
 Vaginal candidiasis 11.3 1.34 1.11–1.61 1.31 1.08–1.59
 HSV-2 seropositive 85.6 0.58 0.43–0.77 0.69 0.51–0.93
 Genital ulcer disease (on examination) 1.1 0.77 0.39–1.51
Antibiotic use within the past 60 days
 Metronidazole 6.3 0.91 0.66–1.27
 Treatment for vaginal candidiasis 2.4 1.55 0.99–2.42 1.47 0.94–2.31
 Any other antibiotic 7.2 0.70 0.51–0.96 0.68 0.49–0.94

OR, odds ratio; CI, confidence interval; HSV-2, herpes simplex virus type 2

a

Generalized estimating equations, adjusted for number of visits per woman.

b

The percentage of visits (of total N=8896) considered “exposed” is presented for each covariate.

c

C. trachomatis testing done for 4045 of 8896 (46%) follow-up visits (through June 1999).