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Table 2 Baseline characteristics according to quartiles of FEV 1 (% predicted) and FVC (% predicted)

From: Reduced lung function is independently associated with increased risk of type 2 diabetes in Korean men

 

FEV1 (%)

 

FVC (%)

 
 

Quartile 1 (≤94.6)

Quartile 4 (>119.9)

P value

Quartile1 (≤89.4)

Quartile 4 (>109.1)

P value

n

2305

2305

 

2305

2305

 

Age (years)

40.8 ± 5.7

41.9 ± 6.1

<0.0001

42.2 ± 6.5

40.9 ± 5.4

<0.0001

Systolic BP (mmHg)

117.5 ± 12.8

117.5 ± 12.6

0.989

118.0 ± 13.1

117.0 ± 12.2

0.008

Diastolic BP (mmHg)

77.2 ± 9.7

76.6 ± 9.3

0.039

77.5 ± 9.7

76.4 ± 9.1

<0.0001

HR (n/min)

65.1 ± 8.8

66.7 ± 9.2

<0.0001

65.5 ± 8.8

66.3 ± 9.2

0.002

BMI (kg/m2)

24.5 ± 2.8

24.7 ± 2.5

0.011

24.8 ± 2.8

24.3 ± 2.4

<0.0001

TC (mmol/L)

5.43 ± 0.93

5.48 ± 0.91

0.073

5.46 ± 0.92

5.44 ± 0.92

0.415

TG (mmol/L)

1.84 ± 1.14

1.72 ± 0.95

<0.0001

1.84 ± 1.14

1.68 ± 0.97

<0.0001

HDL-C (mmol/L)

1.32 ± 0.25

1.38 ± 0.26

<0.0001

1.33 ± 0.25

1.38 ± 0.26

<0.0001

LDL-C (mmol/L)

3.17 ± 0.76

3.19 ± 0.76

0.356

3.18 ± 0.74

3.17 ± 0.76

0.613

Glucose (mmol/L)

5.30 ± 0.46

5.13 ± 0.47

<0.0001

5.30 ± 0.47

5.12 ± 0.47

<0.0001

Insulin (pmol/L)

51.08 ± 20.63

52.40 ± 19.61

0.026

52.65 ± 21.16

50.94 ± 19.43

0.004

HOMA-IR

1.74 ± 0.77

1.73 ± 0.70

0.437

1.80 ± 0.79

1.68 ± 0.69

<0.0001

FEV1 (L)

3.46 ± 0.39

5.33 ± 0.59

<0.0001

3.57 ± 0.46

5.25 ± 0.67

<0.0001

FVC (L)

4.20 ± 0.96

5.77 ± 0.68

<0.0001

4.02 ± 0.41

5.88 ± 0.97

<0.0001

Alcohol (g/day)

13.4 ± 16.0

15.5 ± 16.6

<0.0001

14.3 ± 16.4

15.0 ± 16.6

0.166

Current smoker, n (%)

1053 (45.7)

906 (39.3)

<0.0001

972 (42.2)

935 (40.6)

0.393

  1. Values are mean ± SD for continuous variables. P values for continuous variables were obtained from the Student’s t test. TG was expressed as raw data but was applied for statistical analysis after natural logarithmic transformation.
  2. FEV1, forced expiratory volume in one second; FVC, forced vital capacity; BP, blood pressure; HR, heart rate; BMI, body mass index; TC, total cholesterol; TG, triglyceride; HDL-C, high-density lipoprotein cholesterol; LDL-C, low density lipoprotein cholesterol; HOMA-IR, homeostasis model assessment – insulin resistance.