Table 2.
Variable | Mean (SD) | Median | Rang |
---|---|---|---|
FVC | 66.7 (18.5) | 67 | 28-114 |
FEV1 | 64.8 (20.3) | 66 | 33-124 |
FEV1 / FVC | 98 (15.6) | 100 | 41–121 |
MMEF 25-75% | 53 (27.1) | 52 | 9-118 |
PEF | 66.5 (20.3) | 67 | 13-112 |
% change VENT in FEV1 | 15.6 (22.9) | 9.5 | (−31)-98 |
% change VENT in MMEF 25-75% | 24.2 (23.9) | 24 | (−10)- 65 |
FRC | 106.3 (20.7) | 107 | 64-156 |
RV | 151.5 (40.1) | 144.5 | 80-237 |
TLC | 84.5 (11.6) | 84.5 | 53-109 |
RV/TLC ratio | 46.4 (12.1) | 44.5 | 27-77 |
RV/TLC (%) | 179.9 (44.9) | 170.5 | 101-288 |
All values are in percent predicted for age height. FVC - Forced expiratory volume in one second, MMEF - maximum mid-expiratory flow, PEF - Peak expiratory flow. % Ventolin - percentage of change in FEV1 values after administration of Ventolin, FRC - Functional residual capacity, RV - Residual volume, TLC - Total lung capactiy, RV/TLC - The ratio of RV:TLC in percentage and actual values