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. Author manuscript; available in PMC: 2021 Dec 21.
Published in final edited form as: Nat Hum Behav. 2021 Jul 1;5(12):1717–1730. doi: 10.1038/s41562-021-01135-3

Figure 1. Change in age at first sex (AFS) and age at first birth (AFB) over time, heritability by birth cohort and polygenic score (PGS) prediction.

Figure 1

(A) AFB (A) and AFS (B) by birth cohort, UK biobank shows a shift in the ages over time. (B) Increased SNP heritability for women over time by birth cohort, UK Biobank. (C) Nelson-Aalen hazard estimates of AFS by age for women comparing the upper and lower 5% of the PGS for AFS. (D) Nelson-Aalen hazard estimates of AFB by age for women comparing the upper and lower 5% of the PGS for AFB.