Article Figures & Data
Figures
- Figure 1.
Bland-Altman plot for differences in swab pH as determined by subjects and the clinician. pH values had minimal variability between observers.
Tables
Variable Race (n, %) Black 53 (46.9) White 55 (48.7) Asian 0 (0.0) Hispanic 3 (2.7) Other 2 (1.8) Age (mean, SD)* 35.1 (10.1) Height (mean, SD)† 64.7 (3.2) Weight (mean, SD) 171.8 (45.3) Gravida (mean, SD) 2.0 (1.7) Parity (mean, SD) 1.7 (1.5) Abortion (mean, SD) 0.3 (0.7) Vaginal births (mean, SD) 1.5 (1.5) Cesarean sections (mean, SD) 0.3 (0.7) Regular periods (n, %) 78 (69.0) Pelvic surgery (n, %) 28 (24.8) Vaginal medications (n, %) 1 (0.9) Hormone replacement therapy (n, %) 11 (9.7) Birth control method (n, %) None 36 (31.9) Surgical 27 (23.9) Other‡ 50 (44.3) * Height in inches.
† Weight in pounds.
‡ Includes birth control pills, barrier methods, progesterone injection, transdermal, intrauterine device, and abstinence.
Swab-based pH test Mean pH SD Median pH ICC* S P Value Subject 4.5 0.5 4.5 0.74 −538.0 .0001 Clinician 4.7 0.5 4.6 * ICC, interclass correlation coefficients; S, Wilcoxon’s signed rank test.
- Table 3.
Mixed Model Analyses for Differences of Intravaginal pH in 3 Regions of the Vagina
Model Adjusted Least Square F Value P Value Mean SE Unadjusted model Vaginal area 0.84 .43 Proximal 4.60 0.07 Middle 4.52 0.05 Distal 4.54 0.04 Full model Age 1.22 .27 Parity 7.04 .01 Race 3.47 .02 Hormone replacement therapy 1.06 .31 Birth control 3.29 .07 Vaginal area 0.61 .54 Proximal 4.59 0.12 Middle 4.53 0.11 Distal 4.53 0.11 Final model Parity 10.40 .002 Race 4.17 .008 Vaginal area 0.61 .54 Proximal 4.61 0.11 Middle 4.55 0.09 Distal 4.55 0.09
