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Table 1 Patients’ clinical characteristics

From: One-stage versus two-stage thoracoscopic surgery for synchronous bilateral pulmonary nodules: a propensity score-matched analysis

Parameters

All patients

P-value

Matched patients

P-value

One stage

(n = 84)

Two stage (n = 72)

One stage

(n = 48)

Two stage

(n = 48)

Age, y

57.76 ± 10.35

59.17 ± 9.8

0.388

56.88 ± 10.49

57.78 ± 10.59

0.676

Gender

  

0.508

  

1.000

 Male

25(29.8)

25(34.7)

 

15(31.3)

14(29.2)

 

 Female

59(70.2)

47(65.3)

 

33(68.8)

34(70.8)

 

BMI

24.32 ± 2.97

24.00 ± 2.97

0.532

23.70 ± 2.92

23.89 ± 3.13

0.771

Smoking history

  

0.514

  

1.000

 Yes

13(15.5)

14(19.4)

 

6(12.5)

7(14.6)

 

 No

71(84.5)

58(80.5)

 

42(87.5)

41(85.4)

 

FEV1% Pred (mean,%)

99.26 ± 13.39

95.05 ± 12.67

0.046

97.73 ± 13.88

95.27 ± 12.35

0.329

ppoFEV1% (mean,%)

85.08 ± 11.47

75.60 ± 12.86

<0.001

83.24 ± 12.20

78.58 ± 12.09

0.063

CCI score (median)

3(2–3)

3(2–4)

0.387

3(2–3)

3(2–4)

0.678

ASA grade

  

0.006

  

0.201

 1

65(77.4)

40(55.5)

 

37(77.1)

34(70.8)

 

 2

15(17.9)

26(36.1)

 

9(18.8)

14(29.2)

 

 3

2(2.4)

6(8.3)

 

2(4.2)

0

 

Surgical procedure

  

0.027

  

1.000

 Lobar + Lobar

0

3

 

0

0

 

 Lobar + Sublobar

32

37

 

22

21

 

 Sublobar + Sublobar

52

32

 

26

27

 

Size of the largest tumor(cm)

1.60 ± 0.90

1.70 ± 1.06

0.489

1.60 ± 0.66

1.67 ± 1.14

0.727

  1. BMI, body mass index; FEV1%, percent forced expiratory volume in 1 s; ppo, predicted postoperative forced expiratory volume in first second; CCI, Charlson Comorbidity Index; ASA, American Society of Anesthesiologists; Lobar, Lobectomy; Sublobar, Sublobectomy, which including wedge resection and segmentectomy