Table 2.
Summary of volunteer demographics (individual volunteer characteristics are reported in Additional file 1: Table S1)
| Control group | Test group | |
|---|---|---|
| Number of volunteers | 18 | 18 |
| Age range, years | 22–39 | 25–38 |
| Number of previous pregnancies, n (%) | ||
| 0 | 1 (5.6) | 5 (27.8) |
| 1 | 9 (50) | 6 (33.3) |
| 2 | 7 (38.9) | 5 (27.8) |
| 3 | 1 (5.6) | 1 (5.6) |
| 6 | 0 (0.0) | 1 (5.6) |
| Number of live births, n a (%) | ||
| 0 | 5 (27.8) | 9 (50) |
| 1 | 9 (50) | 5 (27.8) |
| 2 | 3 (16.7) | 4 (22.2) |
| Number of miscarriages, nb (%) | ||
| 0 | 9 (50) | 13 (72.2) |
| 1 | 8 (44.4) | 2 (11.1) |
| 2 | 0 (0.0) | 1 (5.6) |
| 5 | 0 (0.0) | 1 (5.6) |
| Number of months trying to conceive prior to study entry, n (%) | ||
| ≤ 3 months | 5 (27.8) | 6 (33.3) |
| 4–6 months | 6 (33.3) | 7 (38.9) |
| 7–12 months | 6 (33.3) | 2 (11.1) |
| ≥ 13 months | 1 (5.6) | 3 (16.7) |
| Previous use of ovulation kits, n (%) | ||
| Yes | 11 (61.1) | 9 (50.0) |
| No | 7 (38.9) | 9 (50.0) |
| Pregnancy within the study periodc (%) | ||
| Yes | 9 (50.0) | 7 (38.9) |
| No | 9 (50.0) | 11 (61.1) |
aInformation not available for 1 control group volunteer
bInformation not available for 1 control and 1 test group volunteer
cPTP: pre-trial pregnancy for 2 control and 1 test group volunteer (women became pregnant after consenting to participate in the study, but prior to participating in the study)