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Table 1 Baseline characteristics of the study population according to participation in the five-year follow-up study

From: The longitudinal relationship of changes of adiposity to changes in pulmonary function and risk of asthma in a general adult population

 

Participants follow-up

Non-participants follow-up

 

N = 2294

N = 1163

 

Mean

Sd

n miss

Mean

Sd

n miss

Age (y)

50.02

12.49

 

48.02

13.98

 

FEV1 (liter)

3.16

0.79

9

3.04

0.88

5

FVC (liter)

4.03

0.96

9

3.89

1.06

5

 

N

% group

 

N

% group

 

Gender

      

  Males

1048

45.7

 

495

42.6

 

Adiposity measures

      

  18.5 > BMI (kg/m2)

38

1.7

 

27

2.3

 

  18.5 < =BMI < 25 (kg/m2)

1096

47.8

 

491

42.2

 

  25 < =BMI < 30 (kg/m2)

839

36.6

 

408

35.1

 

  30 < =BMI (kg/m2)

319

13.9

2

237

20.4

 

  WC, normal§

1748

76.2

 

359

50.7

 

  WC, high§

545

23.8

2

349

49.3

3

Serum lipids

      

  HDL, normal§

2036

89.1

10

993

86.3

13

  HDL, low§

249

10.9

 

158

13.7

 

  Triglyc <150 mg/dl

1901

83.2

 

887

77.1

 

  Triglyc 150–500 mg/dl

230

10.1

 

161

14.0

 

  Triglyc > = 500 mg/dl

154

6.7

10

103

8.9

13

Atopy, asthma, wheezing

      

  Atopy*, not present

1741

75.9

 

924

79.4

 

  Atopy*, present

553

24.1

 

239

20.6

 

  Asthma, not present

1872

82.2

 

906

78.9

 

  Asthma, present

405

17.8

17

242

21.1

15

  Wheezing, not present

1974

86.7

 

915

79.9

 

  Wheezing, present

303

13.3

17

230

20.1

18

Lifestyle

      

  Smoking, never

1027

48.2

18

417

38.9

 

  Smoking, 0- ≤ 10 pack years

492

23.1

 

253

23.6

 

  Smoking, >10 pack years

613

28.8

 

403

37.6

89

  Alcohol, no drinking

225

10.1

 

159

14.3

 

  Alcohol 1–14 units/week

1448

65.0

 

714

64.4

 

  Alcohol >14 units/week

555

24.9

66

236

21.3

54

  Education§, none

239

10.5

 

215

18.8

 

  Education§, 1 year/practical

543

23.9

 

272

23.8

 

  Education§§, 2–3 years

943

41.4

 

450

39.3

 

  Education§§, > = 4 years

551

24.2

18

208

18.2

18

  1. FEV1, forced expiratory volumes first second; FVC, forced vital capacity; BMI, body mass index; WC, waist circumference; Diabetes*, either self-reported diabetes or fasting p-glucose > =7.1 mmol/L; HDL, serum level of high-density lipoprotein; Triglyc, serum level of triglyceride; *Atopy defined as serum specific IgE positivity (> = .35 kU/l) to inhalant allergens; §above primary school, §§above high school.
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BMC Pulmonary Medicine

ISSN: 1471-2466

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