Table 2 Numbers and percentage of excluded subjects by exclusion criteria and number of acceptable tests
Exclusion criteria and acceptable test | N | % |
|---|---|---|
Curves with a sub-maximal expiratory effort | 56 | 6.1 |
Only 1 acceptable manoeuvre | 4 | 0.4 |
Early interruption | 100 | 10.9 |
Expiration time < 0.5 sec | 7 | 0.8 |
Total excluded subjects | 149 | 16.3 |
Subjects with acceptable tests | 766 | 83.7 |