Table 1 Patient demographic data.

Number of patients

361

1055

821

Age (mean ± SD)

66.7 ± 12.0

68.0 ± 12.1

69.3 ± 12.7

Sex

P < .001

Male

209(57.9%)

724(68.6%)

657(80.0%)

Female

152(42.1%)

331(31.4%)

164(20.0%)

CCI score

P = .23

≦ 2

243(67.3%)

669(63.4%)

526(64.1%)

3–5

98(27.2%)

347(32.9%)

260(31.7%)

> 5

20(5.5%)

39(3.7%)

35(4.3%)

Cell type

P < .001

AD

284(78.7%)

585(55.5%)

303(36.9%)

SqCC

54(15.0%)

379(35.9%)

448(54.6%)

LCC

16(4.4%)

52(4.9%)

47(5.7%)

Others

7(1.9%)

39(3.7%)

23(2.8%)

Treatment

P < .001

None

21(5.8%)

108(10.2%)

89(10.8%)

OP alone

82(22.7%)

117(11.1%)

43(5.2%)

Neoadjuvant + OP + adjuvant

34(9.4%)

118(11.2%)

91(11.1%)

OP + adjuvant

142(39.3%)

332(31.5%)

140(17.1%)

CRT

10(2.8%)

64(6.1%)

113(13.8%)

CT ± others

39(10.8%)

174(16.5%)

198(24.1%)

Others

33(9.1%)

142(13.5%)

147(17.9%)

OP method

P < .001

None

105(29.1%)

490(46.5%)

548(66.8%)

Pneumonectomy/bilobectomy

4(1.1%)

36(3.4%)

31(3.8%)

Lobectomy

183(50.7%)

451(42.8%)

211(25.7%)

Sublobar resection

55(15.2%)

56(5.3%)

19(2.3%)

Unknown

14(3.9%)

22(2.1%)

12(1.5%)