Table 1.
Variables | All patients | STAS | P | ||||
---|---|---|---|---|---|---|---|
Absent | Present | ||||||
N | % | N | % | N | % | ||
Age, years | 0.090 | ||||||
Median | 68 | 68 | 67 | ||||
Range | 28 – 89 | 28 – 89 | 36 – 87 | ||||
Gender | 0.22 | ||||||
Female | 247 | 60 | 148 | 58 | 99 | 64 | |
Male | 164 | 40 | 108 | 42 | 56 | 36 | |
Smoking | 0.62 | ||||||
Never | 52 | 13 | 34 | 13 | 18 | 12 | |
Former/current | 359 | 87 | 222 | 87 | 137 | 88 | |
Surgery | 0.87 | ||||||
Lobectomy | 291 | 71 | 182 | 71 | 109 | 70 | |
Limited resection | 120 | 29 | 74 | 29 | 46 | 30 | |
Tumor size, cm | 0.71 | ||||||
Median | 1.5 | 1.5 | 1.5 | ||||
Range | 0.3–2.0 | 0.3–2.0 | 0.3–2.0 | ||||
Pleural invasion | 0.47 | ||||||
Absent | 364 | 89 | 229 | 89 | 135 | 87 | |
Present | 47 | 11 | 27 | 11 | 20 | 13 | |
Lymphatic invasion | 0.002 | ||||||
Absent | 277 | 67 | 187 | 73 | 90 | 58 | |
Present | 134 | 33 | 69 | 27 | 65 | 42 | |
Vascular invasion | 0 | 0.043 | |||||
Absent | 319 | 78 | 207 | 81 | 112 | 72 | |
Present | 92 | 22 | 49 | 19 | 43 | 28 | |
Lepidic pattern | <0.001 | ||||||
Absent | 158 | 38 | 80 | 31 | 78 | 50 | |
Present | 253 | 62 | 176 | 69 | 77 | 50 | |
Acinar pattern | 0.15 | ||||||
Absent | 15 | 4 | 12 | 5 | 3 | 2 | |
Present | 396 | 96 | 244 | 95 | 152 | 98 | |
Papillary pattern | <0.001 | ||||||
Absent | 112 | 27 | 88 | 34 | 24 | 15 | |
Present | 299 | 73 | 168 | 66 | 131 | 85 | |
Micropapillary pattern | <0.001 | ||||||
Absent | 205 | 50 | 178 | 70 | 27 | 17 | |
Present | 206 | 50 | 78 | 30 | 128 | 83 | |
Solid pattern | 0.001 | ||||||
Absent | 263 | 64 | 179 | 70 | 84 | 54 | |
Present | 148 | 36 | 77 | 30 | 71 | 46 |
STAS, spread through air spaces
Significant P-values are shown in bold