Table 1 UK Biobank reproductive factor descriptives
From: The relationships between women’s reproductive factors: a Mendelian randomisation analysis
Reproductive factor | N | Mean (SD) |
Age at menarche (years) | 243,898 | 13.0 (1.6) |
Age first had sexual intercourse (years) | 219,486 | 19.1 (3.6) |
Age at first live birth (years) | 203,606 | 25.9 (5.1) |
Age at last live birth (years) | 203,356 | 30.1 (5.2) |
Age at menopause (years) | 143,791 | 49.7 (5.1) |
Number of live births | 250,746 | 1.8 (1.2) |
Reproductive factor | N | Median (IQR) |
Lifetime number of sexual partners | 208,274 | 3 (4) |
Reproductive factor | (% (N)) | |
Never parous | 18.69 (49,358) | |