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Table 1 Demographics and STI risk factors in couples in which the female does or does not have bacterial vaginosis (BV)

From: Bacterial communities in penile skin, male urethra, and vaginas of heterosexual couples with and without bacterial vaginosis

  Women Men
BV (n = 65) Normal (n = 31) P valuea BV (n = 65) Normal (n = 65) P valuea
Mean age, years ± SD 27.3 ± 6.6 28.4 ± 7.7 0.473 30.0 ± 8.4 32.2 ± 12.0 0.295
African-American, n (%) 57 (88 %) 22 (71 %) 0.045 55 (85 %) 24 (77 %) 0.388
Married, n (%) 10 (15 %) 5 (16 %) 0.688 10 (15 %) 5 (16 %) 0.451
History of STD
 Gonorrhea, n (%) 17 (26 %) 7 (23 %) 0.705 17 (26 %) 8 (26 %) 0.971
 Chlamydia, n (%) 29 (45 %) 8 (26 %) 0.077 20 (31 %) 6 (19 %) 0.239
 Trichomonas, n (%) 19 (29 %) 9 (29 %) 0.984 2 (3 %) 1 (3 %) 0.969
Number of sex partners
 ≥2 in last 12 months, n (%) 27 (42 %) 12 (39 %) 0.792 34 (52 %) 18 (58 %) 0.597
 ≥2 in last 60 days, n (%) 2 (3 %) 2 (7 %) 0.592 5 (8 %) 4 (13 %) 0.413
Mean duration of partnershipb, months 39.8 44.7 0.654 46.9 46.3 0.963
Mean number of sexual acts/monthb
 Vaginal intercourse 11.3 12.0 0.683 11.9 14.3 0.406
 Received oral sex 6.0 5.0 0.581 5.7 7.7 0.477
 Performed oral sex 4.5 4.7 0.920 4.8 7.6 0.294
Anal intercourse in last month, n (%) 12 (19 %) 5 (17 %) 0.832 10 (16 %) 3 (10 %) 0.535
Never or rarely use condomsb, n (%) 44 (68 %) 19 (61 %) 0.683 40 (62 %) 20 (65 %) 0.935
Circumcised, n (%) 35 (54 %) 23 (74 %) 0.057
  1. a P values are by Pearson’s chi-square of Fisher’s Exact tests for categorical variables and by t tests for continuous variables
  2. bWith enrolled partner
  3. SD standard deviation, STD sexually transmitted disease