Research Article
Comparison of the Diagnostic Performance of Five Clinical Questionnaires for Chronic Obstructive Pulmonary Disease
Table 2
General pulmonary function characteristics of study population.
| | | Total population n = 681 | COPD n = 187 | No COPD n = 494 | value |
| | Weight in kg, mean (SD) | 71.3 (13.6) | 69.3 (13.8) | 72.1 (13.4) | 0.014 | | Height in cm, mean (SD) | 159.6 (9.2) | 160.3 (9.1) | 159.3 (9.3) | 0.185 |
| | FVC% predicted pre-B2, mean (SD) | 95.1 (19.14) | 90.6 (19.9) | 96.7 (18.6) | <0.001 | | FVC% predicted post-B2, mean (SD) | 97.9 (18.1) | 97.5 (19.8) | 98 (17.5) | 0.736 | | FEV1% predicted pre-B2, mean (SD) | 87.5 (22.6) | 68.8 (20.8) | 94.5 (18.1) | <0.001 | | FEV1% predicted post-B2, mean (SD) | 93.4 (21.1) | 77.3 (20.8) | 99.3 (17.9) | <0.001 | | FEV1/FVC pre-B2%, mean (SD) | 70.8 (12.1) | 57.9 (10.1) | 75.5 (8.8) | <0.001 | | FEV1/FVC post-B2%, mean (SD) | 73.8 (10.6) | 59.8 (8.4) | 79 (5.3) | <0.001 |
| | Z score FVC pre-B2, mean (SD) | −0.2 (1.59) | −0.6 (1.53) | 0.1 (1.59) | <0.001 | | Z score FVC post-B2, mean (SD) | −0.1 (1.39) | −0.1 (1.68) | 0.1 (1.27) | 0.664 | | Z score FEV1 pre-B2, mean (SD) | −0.7 (1.67) | −2.0 (1.56) | −0.2 (1.42) | <0.001 | | Z score FEV1 post-B2, mean (SD) | −0.4 (1.5) | −1.5 (1.42) | 0.1 (1.28) | <0.001 | | Z score FEV1/FVC pre-B2, mean (SD) | −0.5 (1.0) | −1.6 (1.05) | −0.2 (0.62) | <0.001 | | Z score FEV1/FVC post-B2, mean (SD) | −0.3 (0.92) | −1.4 (0.84) | 0.1 (0.49) | <0.001 |
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COPD: chronic obstructive pulmonary disease, kg: kilograms, SD: standard deviation, cm: centimeters, COPD: chronic obstructive pulmonary disease, B2: beta-2-agonist, FVC: forced vital capacity, and FEV1: forced expiratory volume in the first second.
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