Table 2 Consent to and valid values for 45-year biomedical survey components
ComponentConsentValid values
n/range% Total participantsn/range% Total participants
Physical measurements*9282–936299.1–99.9‡8508–936290.8–99.9‡
Mental health interview929799.6§929799.6§
Blood analysis†879093.77668–792381.8–84.5
DNA extraction821887.6801785.5
Immortalised cell line culture817887.2752680.3
Saliva sample916597.7646769.0
Pre-interview questionnaire866792.8
Interview questionnaire918298.3
  • *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).