TABLE 2.
Tumor characteristics according to interstitial lung abnormality scoring
| Characteristics | ILA score | |||
|---|---|---|---|---|
| 0 or 1 (n = 209) | 2 (n = 45) | Total (n = 254) | p‐value | |
| Location | 0.02 | |||
| Nonlower lobe | 134 (64.1) | 21 (46.7) | 155 (61.0) | |
| Lower lobe | 75 (35.9) | 24 (53.3) | 99 (39.0) | |
| Location (laterality) | <0.001 | |||
| Inner one‐third | 36 (17.2) | 6 (13.3) | 42 (16.5) | |
| Middle one‐third | 100 (47.8) | 10 (22.2) | 110 (43.3) | |
| Outer one‐third a | 73 (34.9) | 29 (64.4) | 102 (40.2) | |
| T stage b | 0.08 | |||
| 1 (≤30 mm) | 122 (58.4) | 18 (40.0) | 140 (55.1) | |
| 2a (>30 mm, ≤40 mm) | 48 (22.9) | 13 (28.9) | 61 (24.0) | |
| 2b (>40 mm, ≤50 mm) | 30 (14.4) | 9 (20.0) | 39 (15.4) | |
| 3 (>50 mm, ≤70 mm) | 9 (4.3) | 5 (11.1) | 14 (5.5) | |
| Tumor size (mm) b | 25.0 (16.0, 35.0) | 30.0 (21.0, 40.5) | 25.5 (17.8, 35.0) | <0.001 |
| N stage | 0.37 | |||
| 0 | 194 (92.8) | 40 (88.9) | 234 (92.1) | |
| 1 | 15 (7.2) | 5 (11.1) | 20 (7.9) | |
| Histology | <0.001 | |||
| Non‐SQC | 178 (85.2) | 26 (57.8) | 204 (80.3) | |
| SQC | 31 (14.8) | 19 (42.2) | 50 (19.7) | |
| Lung cancer stage c | <0.001 | |||
| Stage I | 175 (83.7) | 26 (57.8) | 201 (79.1) | |
| Stage II | 34 (16.3) | 19 (42.2) | 53 (20.9) | |
Note: Continuous variables are presented as median values (interquartile range). Values for the number of patients are presented as numbers and percentages (in parenthesis). Bold values indicate that p < 0.05.
Abbreviations: ILA, interstitial lung abnormality; SQC, squamous cell carcinoma.
a
Significant differences considering Bonferroni's correction for post hoc analysis.
b
By the eighth TNM staging.
c
Maximal tumor diameter.