Table 2 Consent to and valid values for 45-year biomedical survey components

Component	Consent		Valid values
Component	n/range	% Total participants	n/range	% Total participants
Physical measurements*	9282–9362	99.1–99.9‡	8508–9362	90.8–99.9‡
Mental health interview	9297	99.6§	9297	99.6§
Blood analysis†	8790	93.7	7668–7923	81.8–84.5
DNA extraction	8218	87.6	8017	85.5
Immortalised cell line culture	8178	87.2	7526	80.3
Saliva sample	9165	97.7	6467	69.0
Pre-interview questionnaire	–	–	8667	92.8
Interview questionnaire	–	–	9182	98.3

*Physical measures: vision, blood pressure, hearing threshold, height, weight, waist and hip circumference, and lung function. †Blood analytes: fibrinogen, C-reactive protein, tissue plasminogen activator, von Willebrand Factor, glycosylated haemoglobin, total cholesterol, high-density lipoprotein cholesterol, triglycerides, immunoglobulin E, and insulin-like growth factor 1. ‡Denominator excludes nine cohort members with no nurse interview data (n = 9368). §Denominator excludes 29 cohort members who completed a different mental health interview (n = 9339).