Table 1 UK Biobank study characteristics

UKBB trait

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)

 Adulthood body mass index

250,746

27.1 (5.2)

UKBB trait

N

Median (IQR)

 Lifetime number of sexual partners (at time of assessment)

208,274

3 (4)

UKBB trait

% (N)

 Never parous (at time of assessment)

18.69 (49,358)

 Childhood body size

About average

50.47 (135,399)

Thinner

31.80 (85,316)

Plumper

17.74 (47,585)