Table 5.
Cumulative Incidence of Spontaneous Pregnancy (%) After a Period of Infertility, Stratified by Primary and Secondary Infertilitya, Furthering Understanding of Cancer, Health, and Survivorship in Adult Women Study 2012–2015
| No. of Months After Infertility Period | Unprotected Intercourse for 6 Months | Unprotected Intercourse for 12 Months | Unprotected Intercourse for 24 Months | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Total (n = 432)b | Primary (n = 255) | Secondary (n = 176) | Total (n = 358)b | Primary (n = 209) | Secondary (n = 148) | Total (n = 238)b | Primary (n = 142) | Secondary (n = 95) | |
| 6 | 27.0 | 24.5 | 30.7 | 24.2 | 20.6 | 29.4 | 20.5 | 17.8 | 24.6 |
| 12 | 33.7 | 31.2 | 37.5 | 38.6 | 33.9 | 45.8 | 35.9 | 33.4 | 40.0 |
| 24 | 47.5 | 43.8 | 53.5 | 50.7 | 47.4 | 56.0 | 45.3 | 42.1 | 50.2 |
| 72 | 71.6 | 68.5 | 76.5 | 70.6 | 68.2 | 74.7 | 66.0 | 63.5 | 70.2 |
| 120 | 84.7 | 82.4 | 88.1 | 85.8 | 84.2 | 88.2 | 81.5 | 79.7 | 84.1 |
| >120 | 89.7 | 86.3 | 95.5 | 87.6 | 84.2 | 94.1 | 83.8 | 79.7 | 92.1 |
a Primary infertility included nulliparous women who experienced infertility, and secondary infertility referred to women who had had at least 1 child at the time of infertility.
b One woman was missing age at pregnancy so type of infertility (primary vs. secondary) was unknown.