Table 3.
Per-year change in muscle indexes in subgroups.
| Disease duration | Age | FEV1% | |||||||
|---|---|---|---|---|---|---|---|---|---|
| <=10 yrs (n=75) | >10 yrs (n=50) | P value | <=70 yrs (n=67) | >70 yrs (n=59) | P value | <40 (n=39) | >=40 (n=42) | P value | |
| Muslce Fat Area, cm2 | -3.19 ± 10.71 | -1.13 ± 9.71 | 0.14 | -1.61 ± 9.32 | -3.21 ± 11.31 | 0.29 | -0.96 ± 9.51 | -2.61 ± 8.57 | 0.33 |
| Muscle area, cm2 | -3.25 ± 9.18 | -2.22 ± 8.15 | 0.21 | -2.41 ± 7.67 | -3.3 ± 9.84 | 0.86 | -1.82 ± 7.81 | -3.32 ± 7.69 | 0.36 |
| Fat area, cm2 | 0.32 ± 3.24 | 0.98 ± 3.59 | 0.99 | 0.98 ± 3.27 | 0.09 ± 3.45 | 0.01 | 1.19 ± 3.19 | 0.73 ± 2.87 | 0.65 |
| Fat infiltration, % | 0.01 ± 0.03 | 0.01 ± 0.04 | 1.00 | 0.01 ± 0.03 | 0.01 ± 0.03 | 0.04 | 0.01 ± 0.03 | 0.01 ± 0.03 | 0.70 |
| Muscle density, HU | -1.73 ± 5.21 | -3.36 ± 6.18 | 0.21 | -2.59 ± 6.16 | -2.2 ± 5.03 | 0.86 | -3.05 ± 6.58 | -2.34 ± 5.05 | 0.84 |
Analysis was conducted among patients with complete information on muscle indexes in two measurements. Comparisons between two groups were conducted using Wilcoxon two-Sample tests.