Fig. 1: Measurement repeatability of UKBB self-report and objective measures.

R2 = Variance explained by models regressing PT2 (for example, birth weight reported at follow-up) onto PT1 (for example, self-reported birth weight assessed at baseline), while controlling for follow-up time (timeT2 − T1). Variables with R2 estimates above the grey horizontal line indicate variables with high levels of repeatability (R2 > 0.92).