Table 2 Basic characteristics of patients with IMA and NMA after PSM

303

1212

Age (years)

≤ 65

142 (46.86%)

570 (47.03%)

1

> 65

161 (53.14%)

642 (52.97%)

Sex

Male

116 (38.28%)

451 (37.21%)

0.730

Female

187 (61.72%)

761 (62.79%)

Marital status

Single

75 (24.75%)

275 (22.69%)

0.745

Divorced

27 (8.91%)

109 (8.99%)

Married

201 (66.34%)

828 (68.32%)

Race

Black

32 (10.56%)

121 (9.98%)

0.464

Other

30 (9.90%)

95 (7.84%)

White

241 (79.54%)

996 (82.18%)

Location

Upper

102 (33.66%)

426 (35.15%)

0.914

Lower

180 (59.41%)

698 (57.59%)

Middle

15 (4.95%)

67 (5.53%)

Other

6 (1.98%)

21 (1.73%)

Grade

Grade I

179 (59.08%)

731 (60.31%)

0.916

Grade II

51 (16.83%)

211 (17.41%)

Grade III

9 (2.97%)

36 (2.97%)

Unknown

64 (21.12%)

234 (19.31%)

Laterality

Left

135 (44.55%)

537 (44.31%)

0.938

Right

168 (55.45%)

675 (55.69%)

T

T1

135 (44.55%)

546 (45.05%)

0.157

T2

74 (24.42%)

348 (28.71%)

T3

44 (14.52)

171 (14.11%)

T4

50 (16.50%)

147 (12.13%)

N

N0

286 (94.39%)

1127 (92.99%)

0.684

N1

9 (2.97%)

45 (3.71)

N2

8 (2.64%)

40 (3.30%)

Stage

IA1

19 (6.27%)

80 (6.60%)

0.671

IA2

55 (18.15%)

207 (17.08%)

IA3

55 (18.15%)

232 (19.14%)

IB

44 (14.52%)

214 (17.66%)

IIA

27 (8.91%)

117 (9.65)

IIB

45 (14.85%)

179 (14.77%)

IIIA

55 (18.15%)

168 (13.86%)

IIIB

3 (0.99%)

15 (1.24%)

Size (median [IQR])

35.000 [20.000, 60.000]

34.000 [21.000, 52.250]

0.320

Operation

Lobectomy

263 (86.80%)

1057 (87.21%)

0.977

Lobectomy extended

7 (2.31%)

34 (2.81%)

Other sublobar

3 (0.99%)

10 (0.83%)

Pneumonectomy

6 (1.98%)

20 (1.65%)

Segmentectomy

5 (1.65%)

20 (1.65%)

Wedge

19 (6.27%)

71 (5.86%)

Chemotherapy

No

254 (83.83%)

1012 (83.50%)

0.890

Yes

49 (16.17%)

200 (16.50%)

Radiation

No

294 (97.03%)

1162 (95.87%)

0.353

Yes

9 (2.97%)

50 (4.13%)