Table 1 Response to questionnaires and lung function testing in adults in the Health Survey for England
1995199619972001
Adults living in participating households17 35517 656930017 488
Adults who completed health questionnaire (% of adults in participating households)16 055 (92.5)16 443 (93.1)8582 (92.3)15 647 (89.5)
White adults who completed questionnaire15 11915 410808614 546
White adults with lung function measures (% of white adults who completed questionnaire)12 428 (82.2)12 969 (84.2)6829 (84.5)10 749 (73.9)
White adults with complete data on lung function, covariates and all four pollutants (% of white adults who completed questionnaire)11 400 (75.4)11 963 (77.6)6359 (78.6)10 607 (72.9)