Differences between general practices and pulmonary function laboratories in reproducibility in FEV1 in spirometric tests for the first year data (n=693)*
| Pulmonary function laboratory | |||
|---|---|---|---|
| General practice | FEV1 reproducibility <5% and <200 ml | FEV1 reproducibility ⩾5% and ⩾200 ml | |
| Values are numbers (%) of tests. | |||
| *Pre-bronchodilator and post-bronchodilator tests are pooled. | |||
| †Concordance between laboratory and general practice test reproducibility within the same subject. | |||
| FEV1 reproducibility <5% and <200 ml | 484 (70)† | 85 (12) | 569 (82) |
| FEV1 reproducibility ⩾5% and ⩾200 ml | 99 (14) | 25 (4)† | 124 (18) |
| 583 (84) | 110 (16) | ||