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. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Contraception. 2016 May 31;94(5):512–520. doi: 10.1016/j.contraception.2016.05.012

Table 1.

Randomization Groups and Interventions in Semen Biomarkers Study

Semen Exposure Group
A
B
Vaginal Inoculation with 2 mL of Partner’s Semen in Clinic
(n=16)		 Unprotected Intercourse
(n=17)
A1 (7 Time Points) A2 (4 Time Points) B1 (7 Time Points) B2 (4 Time Points)
 (n=8)  (n=8)  (n=8)  (n=9)
 Clinic Sampling=4  Clinic Sampling=4  Clinic Sampling=5  Clinic Sampling=3
 Home Sampling=4  Home Sampling=4  Home Sampling=3  Home Sampling=6
A1 Substudy A2 Substudy B1 Substudy B2 Substudy
 (n=3)  (n=2)  (n=2)  (n=2)
 Clinic Sampling=1  Clinic Sampling=0  Clinic Sampling=0  Clinic Sampling=0
 Home Sampling=2  Home Sampling=2  Home Sampling=2  Home Sampling=2

The A1 and B1 groups underwent vaginal sampling for biomarkers of semen exposure at 7 time points after inoculation or intercourse (6 h, 24 h, 48 h, 72 h, 7 days, 11 days and 15 days post exposure).

The A2 and B2 underwent vaginal sampling for biomarkers of semen exposure at 4 time points after inoculation or intercourse (6 h, 24 h, 7 days and 15 days post exposure).