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Table 6 Overall and sex specific age adjusted mortality (hazard ratio with 95% CI) according to participation in the HUNT 1, HUNT 2 and the HUNT 3 study

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

Participation

N

Deaths

Hazard ratio

95% CI

HUNT 1 (1984–86)

Women

Participated

38698

13450

1.00

Reference

Not participated

3571

1300

1.51

1.43-1.60

Men

Participated

36928

14206

1.00

Reference

Not participated

5018

1391

1.55

1.46-1.64

Overall

Participated

75626

27656

1.00

Reference

Not participated

8589

2691

1.50

1.44-1.57

HUNT 2 (1995–97)

Women

Participated

34469

5087

1.00

Reference

Not participated

9700

2833

1.82

1.74-1.91

Men

Participated

30237

5497

1.00

Reference

Not participated

12625

2261

1.64

1.56-1.73

Overall

Participated

64706

10584

1.00

Reference

Not participated

22325

5094

1.72

1.66-1.78

HUNT 3 (2006–08)

Women

Participated

27652

835

1.00

Reference

Not participated

19405

225

3.33

2.86-3.87

Men

Participated

22918

367

1.00

Reference

Not participated

23443

702

2.41

2.12-1.75

Overall

Participated

50571

619

1.00

Reference

Not participated

42848

1555

2.80

2.54-3.09

  1. Adjusted for age by using age as the time scale.
  2. The following subjects are excluded from the analyses: Persons < 20 years of age at baseline study, and deaths between invitation and August 1986, August 1997, and August 2008 for HUNT1, HUNT2 and HUNT3, respectively. The number of participants and nonparticipants therefore are lower than previously for the entire study population.