TABLE 2.
Low-risk group | High-risk group | p value | |
LAA−950ins (ml) | |||
Left lung | 77.92 ± 36.10 | 90.95 ± 32.09 | 0.02 |
Right lung | 90.97 ± 39.57 | 107.04 ± 47.34 | 0.02 |
Entire lung | 170.08 ± 74.94 | 195.97 ± 70.93 | 0.03 |
LVins (ml) | |||
Left lung | 1295.87 ± 271.28 | 1412.11 ± 277.34 | 0.02 |
Right lung | 1494.76 ± 320.03 | 1619.00 ± 324.52 | 0.02 |
Entire lung | 2806.53 ± 600.09 | 3041.12 ± 590.16 | 0.02 |
LAA −950ins % | |||
Left lung | 1.80 ± 1.73 | 5.69 ± 1.80 | 0.02 |
Right lung | 5.94 ± 2.00 | 6.52 ± 2.48 | 0.11 |
Entire lung | 5.92 ± 1.98 | 6.36 ± 1.70 | 0.15 |
MLDins(HU) | |||
Left lung | -751.66 ± 29.32 | –765.70 ± 38.29 | 0.01 |
Right lung | –747.36 ± 181.63 | –761.52 ± 25.28 | 0.48 |
Entire lung | –757.51 ± 4.25 | –760.40 ± 5.02 | 0.04 |
LAA−856exp (ml) | |||
Left lung | 162.34 ± 118.40 | 265.90 ± 127.46 | 0.00 |
Right lung | (61.57,123.62) | (140.49,371.61) | 0.00 |
Entire lung | 326.62 ± 209.61 | 582.05 ± 270.14 | 0.00 |
LVexp (ml) | |||
Left lung | 997.28 ± 266.62 | 1191.13 ± 275.22 | 0.00 |
Right lung | 1103.39 ± 366.67 | 1398.92 ± 345.03 | 0.00 |
Entire lung | 2104.40 ± 561.51 | 2612.62 ± 606.93 | 0.00 |
LAA−856exp% | |||
Left lung | 14.75 ± 5.90 | 19.61 ± 6.59 | 0.00 |
Right lung | 14.36 ± 6.14 | 21.54 ± 6.78 | 0.00 |
Entire lung | 14.32 ± 6.14 | 21.25 ± 6.63 | 0.00 |
MLDexp (HU) | |||
Left lung | –732.76 ± 44.08 | –745.26 ± 35.24 | 0.04 |
Right lung | –738.13 ± 36.89 | –754.69 ± 30.50 | 0.00 |
Entire lung | –735.86 ± 39.10 | –750.49 ± 31.91 | 0.01 |
Data are mean ± standard deviation or median (IQR). p values comparing low-risk group and high-risk group are from two-sample t-test, Mann-Whitney U test, χ2 or Fisher’s exact test. LAA–950ins: low attenuation areas less than-950HU on inspiratory CT scan, LVins: lung volume on inspiratory CT scan, LAA–950ins%: low attenuation areas less than-950HU to lung volume on inspiratory CT scan, MLDins: mean lung density on inspiratory CT scan, HU: housfield unites, LAA–856exp: low attenuation areas less than-856HU on expiratory CT scan, LVexp: lung volume on expiratory CT scan, LAA–856exp%: low attenuation areas less than-856HU to lung volume on expiratory CT scan, MLDexp: mean lung density on expiratory CT scan.