Table 1 Number of subjects excluded*
From: Can spirometric norms be set using pre- or post- bronchodilator test results in older people?
Male | Female | Total | |
|---|---|---|---|
Total in Sample | 3793 (100%) | 3637 (100%) | 7430 (100%) |
Excluded for poor quality lung function (%) | 399 (10.5%) | 347 (9.5%) | 746 (10.0%) |
Incomplete information (cannot be classified) | 23 (0.06%) | 61 (1.7%) | 84 (1.1%) |
Total Included | 3371 (88.9%) | 3229 (88.8%) | 6600 (88.8%) |
Excluded from “normal” population on history* (%) | 2787 (74.1%) | 2459 (69.3%) | 5246 (70.6%) |
Of whom: | |||
Ever smoked | 2353 (62.0%) | 1575 (43.3%) | 3928 (52.9%) |
Never-smokers with diagnosis | 162 (4.3%) | 322 (8.9%) | 484 (6.5%) |
Never-smokers without diagnosis with symptoms | 272 (7.2%) | 562 (15.5%) | 834 (11.2%) |
Included in “normal population” | 584 (15.4%) | 770 (21.2%) | 1354 (18.2%) |