Table 2 Agreement between woman-selected estimated date of ovulation and blinded expert review according to the peak day method of fertility tracking
Scenario | ||||
|---|---|---|---|---|
Woman selected EDO | Woman selected EDO excluding women who previously used a fertility awareness-based method | Woman selected EDO excluding cycles for which basal body temperature was recorded | ||
Window in relation to EDO as assessed by expert review using the “last fertile sign” algorithm1 | Cycles | n = 110 | n = 82 | n = 67 |
Exact day n(%) | 84 (76) | 64 (78) | 52 (78) | |
± 1 day n(%) | 90 (82) | 68 (83) | 56 (84) | |
± 2 days n(%) | 96 (87) | 72 (88) | 59 (88) | |
± 3 days n(%) | 102 (93) | 76 (93) | 61 (91) | |
Window in relation to EDO as assessed by expert review using the “best quality” algorithm2 | Cycles | n = 20 | n = 10 | n = 9 |
Exact day n(%) | 18 (90) | 8 (80) | 7 (78) | |
± 1 day n(%) | 19 (95) | 9 (90) | 8 (89) | |
± 2 days n(%) | 20 (100) | 10 (100) | 9 (100) | |
± 3 days n(%) | 20 (100) | 10 (100) | 9 (100) | |