Table 2.
Anthropometric and spirometric data of included subjects divided according to OVD definitions (n=4,730)
| Group III ‘physio (+), operat (−)’ | Group IV ‘physio (−), operat (+)’ | Group V ‘physio (+), operat (+)’ | Group VI ‘physio (−), operat (−)’ | ||
|---|---|---|---|---|---|
| FEV1/FVC<LLN and FEV1/FVC≥0.70 (n=136) | FEV1/FVC<0.70 and FEV1/FVC≥LLN (n=14) | FEV1/FVC<0.70 and FEV1/FVC<LLN (n=770) | FEV1/FVC≥0.70 and FEV1/FVC≥LLN (n=3,810) | ||
| Sex | Male | 109 (80) | 14 (100)* | 721 (94) | 2,454 (64)* |
| Female | 27 (20) | 0 (0)* | 49 (16) | 1,356 (36)* | |
| Smoking status | Smoker | 39 (29) | 13 (93)* | 544 (71) | 544 (14)* |
| Non-smoker | 97 (71) | 1 (7)* | 226 (29) | 3,266 (86)* | |
| Age | (year) | 40.9±10.3 | 74.2±4.7a | 57.8±11.9 | 44.5±13.4b |
| Height | (m) | 1.71±0.09 | 1.67±0.02a | 1.69±0.07 | 1.67±0.09b |
| Weight | (kg) | 79±16 | 75±6 | 70±14 | 75±14b |
| BMI | (kg/m2) | 26.8±4.6 | 26.7±2.0 | 24.8±4.6 | 27.0±4.4b |
| FEV1 | (L) | 3.13±0.78 | 1.68±0.33a | 1.73±0.84 | 3.21±0.87b |
| (%) | 78±17 | 62±13a | 48±20 | 87±16b | |
| FVC | (L) | 4.37±1.07 | 2.49±0.49a | 2.99±1.10 | 3.85±1.04b |
| (%) | 93±19 | 71±15a | 71±22 | 89±15b | |
| FEV1/FVC (absolute value) | 0.71±0.01 | 0.67±0.00a | 0.56±0.10 | 0.83±0.05b | |
BMI, body mass index; FEV1, first-second forced expiratory volume; FVC, forced vital capacity; OVD, obstructive ventilatory defect; LLN, lower limit of normal. Data are mean±SD, except for sex and smoking status, where data are number (%).
a
Probability (Mann–Whitney U test)<0.05: Group III vs. Group IV.
b
Probability (t-test)<0.05: Group V vs. Group VI.
*
Probability (chi-square) <0.05: Group III vs. Group IV or Group V vs. Group VI.