Table 1 Patient characteristics
Variable | T1a (n = 52) | T1b (n = 65) | T1c (n = 27) | p-value |
|---|---|---|---|---|
Gender | Â | Â | Â | 0.124 |
Female | 35(67.3) | 32(49.2) | 17(63) | Â |
Male | 17(32.7) | 33(50.8) | 10(37) | Â |
Age (years) | Â | Â | Â | 0.000 |
< 60 | 40(76.9) | 26(40.0) | 12(44.4) |  |
≥ 60 | 12(23.1) | 39(60.0) | 15(55.6) |  |
Family history of lung cancer | Â | Â | Â | 0.129 |
No | 49(94.2) | 54(83.1) | 25(92.6) | Â |
Yes | 3(5.8) | 11(16.9) | 2(7.4) | Â |
History of malignancy | Â | Â | Â | 0.254 |
No | 46(88.5) | 62(95.4) | 23(85.2) | Â |
Yes | 6(11.5) | 3(4.6) | 4(14.8) | Â |
Smoking index | Â | Â | Â | 0.710 |
Nonsmoker | 36(69.2) | 38(58.5) | 18(66.7) | Â |
< 400 | 9(17.3) | 10(15.4) | 0(0) |  |
≥ 400 | 7(13.5) | 17(26.2) | 9(33.3) |  |
Surgery | Â | Â | Â | 0.827 |
Lobectomy | 33(63.5) | 43(66.2) | 19(70.4) | Â |
Segmentectomy | 19(36.5) | 22(33.8) | 8(29.6) | Â |
Location | Â | Â | Â | 0.191 |
Right upper lobe | 15(28.8) | 16(24.6) | 7(25.9) | Â |
Right middle lobe | 4(7.7) | 3(4.6) | 4(14.8) | Â |
Right lower lobe | 10(19.2) | 14(21.5) | 2(7.4) | Â |
Left upper lobe | 12(23.1) | 23(35.4) | 5(18.5) | Â |
Left lower lobe | 11(21.2) | 9(13.8) | 9(33.3) | Â |
Nodule types | Â | Â | Â | 0.025 |
pSN | 15(28.8) | 7(10.8) | 3(11.1) | Â |
SN | 37(71.2) | 58(89.2) | 24(88.9) | Â |
Pathological types | Â | Â | Â | 0.000 |
AIS | 3(5.8) | 0(0) | 0(0) | Â |
MIA | 15(28.8) | 4(6.2) | 0(0) | Â |
IA | 34(65.4) | 61(93.8) | 27(100) | Â |
LN Metastasis | Â | Â | Â | 0.000 |
No | 50(96.2) | 51(78.5) | 16(59.3) | Â |
Yes | 2(3.8) | 14(21.5) | 11(40.7) | Â |