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. 2010 Apr 15;5(4):e10197. doi: 10.1371/journal.pone.0010197

Table 2. Demographic data of the women enrolled in the longitudinal study.

Participant characteristic
Mean Age 31.3
Age Range 22–42
Median Age 30.5
1 N (%)
Race
White 13 (59.1%)
African American2 5 (22.7%)
Asian 2 (9.1%)
Did not answer 2 (9.1%)
Douching during the sampling period3 1 (4.2%)
Other vaginal medication3 3 (12.5%)
Vaginal product (not medication)3 5 (20.8%)
Sexual activity3 18 (75%)
1

N indicates number of participants.

2

Four of five participants reported another race.

3

Data missing for 2 participants, hence the number of women included in the calculation is 20, corresponding with 24 menstrual cycles captured. The denominator used for the calculations is 24.