Table 1 Patient characteristics compared by presence and absence of NOPAF

Sex

0.011

 Female

1693 (48%)

16 (29.6%)

 Male

1836 (52%)

38 (70.4%)

Age (years), Mean ± SD

57.4 ± 12.3

66.0 ± 8.6

< .001

BMI (kg/m²), Mean ± SD

23.4 ± 3.3

22.6 ± 3.7

0.068

NYHA classification

0.112

 1

857 (24.3%)

7 (13%)

 2

2561 (72.6%)

44 (81.5%)

 3

111 (3.1%)

3 (5.6%)

Admission heart rate (beats/min), Mean ± SD

76.1 ± 10.5

72.2 ± 10.9

0.008

Current smoking

0.338

 No

3158 (89.5%)

51 (94.4%)

 Yes

371 (10.5%)

3 (5.6%)

Drinking

0.908

 No

3353 (95%)

52 (96.3%)

 Yes

176 (5%)

2 (3.7%)

Hypertension

0.752

 No

2915 (82.6%)

46 (85.2%)

 Yes

614 (17.4%)

8 (14.8%)

Diabetes

1

 No

3309 (93.8%)

51 (94.4%)

 Yes

220 (6.2%)

3 (5.6%)

Heart disease

1

 No

3490 (98.9%)

53 (98.1%)

 Yes

39 (1.1%)

1 (1.9%)

Cerebral infarction

0.094

 No

3471 (98.4%)

51 (94.4%)

 Yes

58 (1.6%)

3 (5.6%)

FEV1 (%), Mean ± SD

78.2 ± 13.9

71.7 ± 19.7

0.018

MVV (%), Mean ± SD

99.5 ± 20.2

93.4 ± 19.2

0.026

LVEF, Mean ± SD

68.3 ± 12.9

65.7 ± 9.4

0.051

Left Atrial Diameter (mm)

0.291

 ≥ 40

506 (14.3%)

11 (20.4%)

 < 40

3023 (85.7%)

43 (79.6%)

LVEDV (ml), Mean ± SD

117.2 ± 24.8

123.4 ± 24.8

0.066

LVESV (ml), Mean ± SD

37.7 ± 11.8

38.1 ± 18.4

0.888

Kalium (mmol/L), Mean ± SD

4.3 ± 6.8

4.2 ± 0.4

0.529

Sodium (mmol/L), Mean ± SD

145.6 ± 234.6

141.0 ± 3.1

0.25

Calcium (mmol/L), Mean ± SD

2.3 ± 0.1

2.3 ± 0.2

0.836

Magnesium (mmol/L), Mean ± SD

1.0 ± 3.5

0.9 ± 0.1

0.042

% neutrophils, Mean ± SD

65.4 ± 95.9

63.6 ± 13.4

0.455

% lymphocytes, Mean ± SD

26.5 ± 11.8

25.6 ± 13.0

0.586

Hemoglobin (g/L), Mean ± SD

134.9 ± 27.2

140.3 ± 33.8

0.244

Platelet count (10⁹/L), Mean ± SD

215.0 ± 87.9

217.9 ± 99.9

0.814

Surgical duration (min), Mean ± SD

133.8 ± 75.4

162.2 ± 62.1

0.006

Invasiveness

< .001

 VATS

3358 (95.2%)

43 (79.6%)

 Thoracotomy

171 (4.8%)

11 (20.4%)

Resected segment

0.244

 Middle

308 (8.7%)

2 (3.7%)

 Upper

1960 (55.5%)

37 (68.5%)

 Others

64 (1.8%)

1 (1.9%)

 Lower

1197 (33.9%)

14 (25.9%)

Laterality

< .001

 Right

2104 (59.6%)

24 (44.4%)

 Left

1393 (39.5%)

25 (46.3%)

 Right and left

32 (0.9%)

5 (9.3%)

Extent of resection

< .001

 Minor resection

1584 (44.9%)

5 (9.3%)

 Complex resection

54 (1.5%)

1 (1.9%)

 Lobectomy

1858 (52.6%)

42 (77.8%)

 Pneumonectomy

33 (0.9%)

6 (11.1%)

Histological type

< .001

 Others

884 (25%)

13 (24.1%)

 Squamous carcinoma

344 (9.7%)

15 (27.8%)

 Adenocarcinoma

2296 (65.1%)

26 (48.1%)

 Adenosquamous

5 (0.1%)

0 (0%)

Diameter of lesion (cm), Mean ± SD

2.3 ± 2.8

3.3 ± 2.1

0.001

Number of lymph nodes dissected, Mean ± SD

9.1 ± 9.9

16.1 ± 10.2

< .001

Length of hospital stay (days),

Mean ± SD

9.6 ± 5.0

15.4 ± 8.7

< .001

Blood loss (ml), Mean ± SD

54.2 ± 118.3

73.3 ± 110.7

0.237