Table 1 Univariate analysis in the benign and malignant micro-nodule cohort
Variable | Benign micro-nodule cohort (n = 170) | malignant micro-nodule cohort (n = 172) | F value /Zvalue /X2value | P value |
|---|---|---|---|---|
AP | ||||
40 keV(HU) | 360.34 ± 53.26 | 282.83 ± 62.87 | 3.915 | < 0.001 |
70 keV(HU) | 135.40 (123.98, 148.65) | 114.60 (99.78, 127.45) | −8.514 | < 0.001 |
100 keV(HU) | 81.50 (70.40, 92.80) | 75.05 (64.50, 84.96) | −3.814 | < 0.001 |
λHU | 4.67 ± 0.83 | 3.48 ± 0.93 | 1.780 | < 0.001 |
NIC | 0.37 (0.32, 0.42) | 0.30 (0.23, 0.34) | −8.974 | < 0.001 |
NZeff | 0.82 (0.80, 0.85) | 0.80 (0.77, 0.82) | −6.507 | < 0.001 |
VP | ||||
40 keV(HU) | 281.95 (257.60, 317.55) | 282.45 (246.02, 324.75) | −0.365 | 0.715 |
70 keV(HU) | 117.50 (105.63, 128.28) | 115.35 (103.10, 130.78) | −0.103 | 0.918 |
100 keV(HU) | 74.06 ± 14.99 | 75.53 ± 13.04 | 1.867 | 0.334 |
λHU | 3.50 (3.06, 4.03) | 3.46 (2.92, 4.04) | −0.502 | 0.616 |
NIC | 0.68 ± 0.11 | 0.72 ± 0.14 | 17.013 | 0.003 |
NZeff | 0.94 ± 0.02 | 0.95 ± 0.03 | 12.280 | 0.009 |
Radiological features | ||||
Micro-calcification (presence) | 46 (27.1%) | 89 (51.7%) | 21.806 | < 0.001 |
Enhanced blurring (presence) | 62 (36.5%) | 97 (56.4%) | 13.644 | < 0.001 |