Skip to main content

Table 2 Baseline characteristics in relation to quartiles of FEV1%predicted: Females (n = 7416)

From: The temporal relationship between poor lung function and the risk of diabetes

 

Overall

Q4

Q3

Q2

Q1

P value for trend

FEV1%predicted

95.4 (±18.1)

116.9 (±10.2)

101.3 (±3.0)

90.9 (±3.2)

72.5 (±11.9)

–

Number (n)

7416

1854

1854

1854

1854

–

Age (years)

47.6 (±7.8)

48.0 (±6.6)

46.9 (±7.8)

46.6 (±8.6)

48.8 (±8.1)

0.023

Height (m)

1.64 (±0.06)

1.64 (±0.06)

1.64 (±0.06)

1.64 (±0.06)

1.64 (±0.06)

0.868

Current-smokers (%)

45.2

27.0

38.8

48.4

66.6

<0.001

BMI (kg/m2)

23.8 (±3.9)

23.8 (±3.5)

23.7 (±3.7)

23.7 (±3.9)

24.0 (±4.4)

0.135

Physical inactivity (%)

43.3

36.6

40.6

45.0

51.0

<0.001

 - Missing data (%)

12.2

11.2

13.9

14.5

9.2

Anti-hypertensive medication (%)

6.6

5.0

6.5

6.3

8.6

<0.001

High alcohol consumption (%)

2.7

2.5

2.4

2.9

3.1

0.150

ESR (mm/h)a

7.47

6.99

7.13

7.48

8.36

<0.001

Baseline glucose (mmol/L)

4.74 (±0.52)

4.70 (±0.52)

4.74 (±0.51)

4.75 (±0.53)

4.79 (±0.53)

<0.001

Cholesterol (mmol/L)

5.67 (±1.10)

5.64 (±1.07)

5.62 (±1.08)

5.62 (±1.11)

5.79 (±1.12)

<0.001

Family history of diabetes (%)

16.0

16.0

16.1

15.2

16.7

0.788

Social class (%)

     

0.785

 - Low skilled

44.9

42.2

43.8

45.0

48.5

 - High skilled

45.4

48.5

48.2

45.4

39.5

 - Self-employed

2.9

3.1

2.3

3.2

3.0

 - Other

6.8

6.3

5.8

6.4

8.9

  1. Q Quartile, FEV 1 Forced expiratory volume 1 s, BMI body mass index, ESR Erythrocyte sedimentation rate. Data consist of mean (±standard deviation) unless otherwise stated. aGeometric mean presented for ESR. Linear by linear association for chi square tests used for p value for categorical variables, ANOVA test for linearity used for p value for continuous variables