Table 1. Demographic data, clinical data, and quantitative computed tomography results of patients.
| All patients n=47 Mean±SD |
Control group n=14 Mean±SD |
Study group n=33 Mean±SD |
p-value | ||
|---|---|---|---|---|---|
| Gender n m/f (%) | 32 (68.1)/15 (31.9) | 6 (42.9)/8 (57.1) | 26 (78.8)/7 (21.2) | 0.017 | |
| Age | 54.23±8.51 | 49.21±5.92 | 56.36±8.62 | 0.007 | |
| Comorbidities y/n | 25 (53.2)/22 (46.8) | 6 (42.9)/8 (57.1) | 19 (57.6)/14 (42.4) | 0.360 | |
| Smoking history (p/y) | 6.71±6.68 | 5.93±6.39 | 7.1±6.90 | 0.664 | |
| BMI | 28.14±4.29 | 26.72±4.39 | 28.75±4.17 | 0.139 | |
| mMRC | 1.80±0.72 | 1,43±,514 | 1,97±,752 | 0.024 | |
| LTOT y/n | 15 (31.9)/32 (68.1) | 1 (7.1)/13 (92.9) | 14 (42.4)/19 (57.6) | 0.003 | |
| qCT (DRV%) | |||||
| [(-500)-0] HU [(-750)-(-500)] HU |
4.49±3.60 | 1.76±0.43 | 5.65±3.73 | <0.001 | |
| 22.80±17.08 | 7.60±2.86 | 29.25±16.50 | <0.001 | ||
BMI: body mass index; DRV%: percentages of density range volumes; HU: Hounsfield units; LTOT: long-term oxygen therapy; m/f: male/female; mMRC: modified Medical Research Council score; n: number; p/y: pack year; qCT: quantitative computed tomography; SD: standard deviation; y/n: yes/no. Statistically significant p-values were given as bold.