. 2015 Sep 11;5:13983. doi: 10.1038/srep13983

Table 1. Clinical characteristic of 384 Han Chinese women with POF.

Characteristics	Mean ± S.D./N (%)
Age at diagnosis (yr)	29.81 ± 5.27
Age at menarche (yr)^a	14.43 ± 1.72
Age of amenorrhea (yr)^a	25.72 ± 5.77
FSH (IU/L)	72.98 ± 32.66
E₂ (pmol/L)	27.76 ± 23.59
Family history^b	21 (5.5%)
Parental consanguinity	3 (0.8%)

^aRefer to patients with secondary amenorrhea.

^bA positive family history was considered if another first or second degree female family member had POF or early menopause (menopause before 45 years old).