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Table 1 A Comparison of Baseline Characteristics Between Men and Women With Non-Small Cell Lung Cancer, Who Underwent SurgeryContinuous variables are expressed as mean ± SD and dichotomous variables are expressed as % of column totals.

From: The relationship between stage 1 and 2 non-small cell lung cancer and lung function in men and women

 

Men N = 388

Women N= 222

P value

Age (years)

64 ± 9

64 ± 10

0.432

BMI (kg/m2)

26 ± 4

24 ± 5

<0.001

PaCO2 (mm Hg)

41 ± 8

40 ± 7

<0.001

PaO2 (mm Hg)

80 ± 22

86 ± 30

<0.001

Pre-bronchodilator FEV1(% predicted)

74 ± 19

85 ± 20

<0.001

Post-bronchodilator FEV1 (% predicted)

77 ± 18

88 ± 20

<0.001

Pre-bronchodilator FVC(% predicted)

86 ± 16

94 ± 18

<0.001

Post-bronchodilator FVC, (% predicted)

90 ± 15

96 ± 18

<0.001

KCO (% predicted)

78 ± 23

75 ± 22

<0.001

Current Smokers (%)

57

64

0.082

Pack Years of Smoking*

45 ± 2

37 ± 2

<0.001

Adenocarcinoma (%)

40

73

<0.001

Squamous cell carcinoma (%)

57

24

<0.001

Size of the tumors (cm)

3.6 ± 1.3

2.7 ± 1.0

0.008

Upper Lobe (%)

56

58

0.153

Middle Lobe or Lingula (%)

3

7

0.153

Lower lobe (%)

28

29

0.153

Multiple lobes (%)

5

3

0.153

  1. * Expressed as geometric mean ± standard deviation
  2. Abbreviations: BMI, body mass index, PaCO2, arterial carbon dioxide tension; PaO2, arterial oxygen tension, FEV1, forced expiratory volume in one second, FVC, forced vital capacity; KCO, transfer coefficient for carbon monoxide