The natural menstrual cycle revisited – can natural cycle be trusted

Table 1 Descriptive statistics

Variable	Mean (± SD) Median [IQR] Number; proportion
Age, years	27.5 [26; 41]
BMI, kg/m²	22.5 [20.8; 23.1]
Weight, kg	64 [59; 69]
AMH cycle day 5, pmol/L	14.1 (± 11.7)
Antral follicle count, n	17.3 (± 12.6)
Cycle length, days	28 [28; 30]
AUC¹, nmol days/L	269 (± 175)
Number of previous pregnancies, number of women (%)
0	12; 46%
1	2; 8%
2	6; 23%
≥ 3	6; 23%
Number of previous births, number of women (%)
0	14; 54%
1	2; 8%
2	8; 31%
≥ 3	2; 8%

¹Area under the curve. Two cycles were excluded as only one blood sample was analysed during the luteal phase (cycle day 15–30)

ISSN: 1757-2215