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Table 1 Comparisons of anthropometrics (means) and percentages reporting symptoms and diseases between responders to the main questionnaires (Q1 or Q2) and the nonparticipation questionnaire (QNP)

From: The HUNT study: participation is associated with survival and depends on socioeconomic status, diseases and symptoms

 

Women

Men

 

Q1

QNP

p

Q1 + QNP 

Q1

QNP

p

Q1 + QNP 

Number invited ¤

47 293

19 004

  

46 567

23020

  

Number participated

27 758

3241

 

30 999

23 049

3677

 

26 726

Percent of invited to HUNT3

58.7

6.9

 

65.6

49.5

7.9

 

57.4

Height (cm) #

164.6

166.3

<0.01

164.7

177.8

179.6

<0.01

178.0

Weight (kg) #

72.9

71.5

<0.01

72.8

86.9

86.7

0.51

86.8

BMI (kg/m2) #

26.9

25.8

<0.01

26.8

27.5

26.9

<0.01

27.4

General practitioner last 12 months

83.9

84.6

0.30

83.9

74.5

74.2

0.74

74.4

Hospitalized last year

12.4

20.1

<0.01

13.1

10.9

14.0

<0.01

11.3

Current health poor or very poor

28.4

29.6

0.20

28.5

23.4

24.1

0.36

23.5

Mental distress £

7.9

12.1

<0.01

8.3

6.3

9.4

<0.01

6.8

Insomnia many evenings a week

14.8

16.2

0.03

15.0

7.5

10.2

<0.01

8.0

Wake up early in the morning many days a week

12.2

11.9

0.66

12.1

9.6

8.2

<0.01

9.4

Chronic disease limiting daily functions

33.9

33.9

1.00

33.9

32.4

27.9

<0.01

31.8

Daily cough in periods (Q2)

19.1

20.7

0.04

19.3

22.6

20.3

<0.01

22.2

Attacks of wheezing or breathlessness

12.4

11.3

0.09

12.3

12.3

12.2

0.95

12.3

Allergic rhinitis (Q2)

23.1

25.3

<0.01

23.4

18.7

21.8

<0.01

19.2

Heartburn (a lot) (Q2)

7.1

4.4

<0.01

6.7

7.2

4.8

<0.01

6.8

Headache (Q2)

42.1

44.7

<0.01

42.4

27.8

27.3

0.51

27.7

Migraine (Q2)

10.9

11.8

0.09

11.0

5.0

5.3

0.45

5.0

Musculoskeletal pain of more than 3 months

54.6

41.9

<0.01

53.0

45.1

31.6

<0.01

42.9

Urine incontinence (Q2)

26.8

20.6

<0.01

26.1

8.7

5.2

<0.01

8.2

Medication for arterial hypertension

20.5

24.9

<0.01

20.8

21.4

23.8

<0.01

21.7

Myocardial infarction

1.6

3.1

<0.01

1.7

5.2

6.9

<0.01

5.4

Angina pectoris

2.5

3.2

0.04

2.7

4.8

5.9

0.01

5.0

Cerebral insult

2.2

3.5

<0.01

2.3

3.0

3.7

0.03

3.1

Renal disease

2.6

3.9

<0.01

2.7

2.5

3.8

<0.01

2.7

Asthma

10.4

10.9

0.39

10.4

9.4

10.5

0.04

9.5

COPD or chronic bronchitis

3.3

3.9

0.14

3.3

3.4

5.3

<0.01

3.7

Diabetes

3.8

5.7

<0.01

4.0

4.9

6.6

<0.01

5.2

Cancer

5.6

5.6

0.94

5.6

4.9

4.6

0.55

4.8

Osteoporosis

5.3

5.9

0.20

5.3

0.7

1.1

0.03

0.8

Fibromyalgia

6.3

7.4

0.03

6.4

0.8

1.3

<0.01

0.9

Arthrosis

18.8

21.4

<0.01

19.0

10.3

11.9

0.01

10.5

Sought help for mental problem

16.9

20.6

<0.01

17.7

9.9

11.7

<0.01

10.1

Hyperthyreosis

2.8

3.0

0.56

2.8

0.9

0.5

0.05

0.8

Hypothyreosis

9.3

10.0

0.30

9.4

2.3

1.8

0.06

2.2

Never-smoker §

47.3

44.4

<0.01

47.0

44.3

41.1

<0.01

43.8

Ex-smoker

27.4

26.1

0.13

27.3

35.2

31.1

<0.01

34.6

Occasional smoker

9.4

9.3

0.92

9.4

9.7

9.2

0.38

9.6

Daily smoker

20.6

20.2

0.59

20.6

16.9

18.7

<0.01

17.1

Daily use of snuff

1.2

1.9

<0.01

1.3

13.8

17.0

<0.01

14.3

Alcohol > 2-3 times a week

12.0

9.5

<0.01

11.3

18.8

17.8

0.16

18.6

Exercise > 2-3 times a week

20.5

14.0

<0.01

19.8

17.3

13.9

<0.01

16.9

  1. Questions from Q2 are marked.
  2. ¤ Invited to QNP, persons having died or emigrated between HUNT3 and QNP are excluded.
  3. # Height and weight measured at the screening stations, self-reported in QNP.
  4. § Questions on tobacco smoking; included in n if answered at least one of the smoking related questions.
  5. £ CONOR Mental Health Index (CONOR MHI) consists of 7 questions on mental distress with score 1-4. Mean score calculated and cut-off for dichotomization was ≥ 2.15.
  6. Corresponding data stratified by age and sex are given in Table S1 and Table S2.