Table 2.
Characteristics of Marquette Natural Family Planning User Based on the Types of Fertility Biomarker Used.
| User Characteristics | CMM Only (n = 114) | EHFM Only (n = 332) | CMM + EHFM (n = 283) | LH Plusa (n = 471) |
|---|---|---|---|---|
| Age of the women | 26.82 (SD = 5.04) | 30.18 (SD = 5.26) | 29.78 (SD = 5.09) | 29.74 (SD = 4.80) |
| Months of use | 3.88 (SD = 2.93) | 7.02 (SD = 4.12) | 5.57 (SD = 4.35) | 9.64 (SD = 3.60) |
| Reproductive category | ||||
| Regular cycle | 95 (83.3 percent) | 65 (19.6 percent) | 107 (37.8 percent) | 126 (26.8 percent) |
| Postpartum/breastfeed | 11 (9.6 percent) | 242 (72.9 percent) | 154 (54.4 percent) | 327 (69.4 percent) |
| Irregular cycle | 6 (5.3 percent) | 23 (6.9 percent) | 20 (7.1 percent) | 15 (3.2 percent) |
| Missing | 2 (1.8 percent) | 2 (0.6 percent) | 2 (0.7 percent) | 3 (0.6 percent) |
| Total unintended pregnancies | 2 (1.8 percent) | 11 (3.3 percent) | 15 (5.3 percent) | 14 (3.0 percent) |
| Unintended pregnancy due to method failure | 0 (0 percent) | 3 (0.9 percent) | 4 (1.4 percent) | 4 (0.8 percent) |
| Unintended pregnancy due to user behavior | 1 (0.9 percent) | 6 (1.8 percent) | 8 (2.8 percent) | 8 (1.7 percent) |
| Unintended pregnancy with reason unknown | 1 (0.9 percent) | 2 (0.6 percent) | 3 (1.1 percent) | 2 (0.4 percent) |
Note: N = 1,221; n = 1,212 due to missing data. CMM = cervical mucus monitoring; EHFM = electronic hormonal fertility monitor; LH = luteinizing hormone.
a Includes use of LH as a second check for peak fertility with either CMM or EHFM.