Table 3 Classification and clinical characteristics of patients combined NRS2000 score and SGA score

Age, Mean ± SD

64.6 ± 6.8

63.2 ± 7.1

65.4 ± 6.6

0.152

Gender, n (%)

0.304

 Female

35 (42.7)

11 (35.5)

24 (47.1)

 Male

47 (57.3)

20 (64.5)

27 (52.9)

FEV1/FVC, Mean ± SD

90.3 ± 20.0

93.5 ± 20.4

88.4 ± 19.7

0.268

Diabetes mellitus, n (%)

0.332

 No

53 (64.6)

18 (58.1)

35 (68.6)

 Yes

29 (35.4)

13 (41.9)

16 (31.4)

Hypertension, n (%)

0.325

 No

67 (81.7)

27 (87.1)

40 (78.4)

 Yes

15 (18.3)

4 (12.9)

11 (21.6)

Smoking, n (%)

0.548

 No

51 (62.2)

18 (58.1)

33 (64.7)

 Yes

31 (37.8)

13 (41.9)

18 (35.3)

Drinking, n (%)

0.756

 No

52 (63.4)

19 (61.3)

33 (64.7)

 Yes

30 (36.6)

12 (38.7)

18 (35.3)

Pre-albumin, Mean ± SD

267.8 ± 22.0

266.3 ± 23.6

268.7 ± 21.2

0.625

pT stage, n (%)

0.383

 pT1

25 (30.5)

8 (25.8)

17 (33.3)

 pT2

20 (24.4)

6 (19.4)

14 (27.5)

 pT3

37 (45.1)

17 (54.8)

20 (39.2)

pN stage, n (%)

0.699

 pN0

52 (63.4)

19 (61.3)

33 (64.7)

 pN1

17 (20.7)

6 (19.4)

11 (21.6)

 pN2

9 (11.0)

5 (16.1)

4 (7.8)

 pN3

4 ( 4.9)

1 (3.2)

3 (5.9)

Surgical duration, Mean ± SD

198.5 ± 7.0

199.8 ± 6.6

197.6 ± 7.2

0.169

Intraoperative blood loss, Mean ± SD

128.7 ± 8.7

127.8 ± 6.9

129.2 ± 9.7

0.51

Coronary heart disease, n (%)

0.558

 No

55 (67.1)

22 (71)

33 (64.7)

 Yes

27 (32.9)

9 (29)

18 (35.3)

Preoperative BNP, Mean ± SD

89.6 ± 7.3

91.5 ± 7.1

88.5 ± 7.2

0.077

Atrial fibrillation, n (%)

0.061

 No

56 (68.3)

25 (80.6)

31 (60.8)

 Yes

26 (31.7)

6 (19.4)

20 (39.2)

Pulmonary infection, n (%)

1

 No

78 (95.1)

30 (96.8)

48 (94.1)

 Yes

4 ( 4.9)

1 (3.2)

3 (5.9)

Length of stay, Mean ± SD

17.0 ± 7.2

17.8 ± 10.3

16.5 ± 4.6

0.41

MSAS score, Mean ± SD

1.3 ± 0.7

0.4 ± 0.2

1.9 ± 0.2

< 0.001