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LUNG FUNCTION READING NOT OBTAINED. CIRCLE CONSENT CODE 04 ON FRONT OF CONSENT BOOKLET. GIVE REASON WHY LUNG FUNCTION MEASUREMENTS WERE NOT ATTEMPTED/REFUSED.
CODE ONE ONLY.
Universe
Adults (aged 16 and over) and children (aged 0-15 years) in the general population and ethnic minority groups, living in private households in England.;National
Sampling
Multi-stage stratified random sample
Study Type
Repeated cross-sectional study. The survey is conducted annually.