Table 2 Participant characteristics at study entry (n = 808,732).

From: Clustering and trajectories of key noncommunicable disease risk factors in Norway: the NCDNOR project

Characteristic

Women

Men

Overall

Participants, No. (%)

420,840 (52.0)

387,892 (48.0)

808,732 (100.0)

Age, median (IQR)

41.4 (3.1)

41.5 (3.4)

41.4 (3.3)

Birth year, median (IQR)

1951 (11.5)

1951 (11.5)

1951 (11.5)

Participation year, median (IQR)

1993 (11.2)

1993 (11.4)

1993 (11.2)

Highest attained educationa

417,109

384,566

801,675

 Primary

28.0

24.9

26.5

 Secondary

44.3

46.6

45.4

 Tertiary

27.7

28.5

28.1

Highest attained income quintilea

398,050

378,748

776,798

 Quintile 1

7.0

3.6

5.4

 Quintile 2

7.9

7.2

7.6

 Quintile 3

16.1

16.7

16.4

 Quintile 4

26.4

24.4

25.5

 Quintile 5

42.4

48.0

45.2

Smoking status (daily)

393,910

364,052

757,962

 Never

44.3

36.1

40.4

 Former

21.5

27.1

24.2

 Current

34.2

36.8

35.5

Smoking intensity (cigarettes/day)b

388,957

353,458

742,415

 Median (IQR)

5.0 (10.0)

10.0 (15.0)

6.0 (12.5)

Smoking duration (years)b

390,408

360,569

750,977

 Median (IQR)

5.0 (20.0)

11.0 (22.0)

8.0 (20.0)

Leisure-time physical activity

405,499

372,748

778,247

 Category 1

23.9

24.1

24.0

 Category 2

57.2

45.2

51.5

 Category 3

14.5

23.4

18.7

 Category 4

4.5

7.3

5.8

Harmful use of alcohol

110,467

104,581

215,048

 No

89.2

76.6

83.1

 Yes

10.8

23.4

16.9

Mean alcohol consumption (grams/14 days)

151,803

131,383

283,186

 Median (IQR)

28.8 (71.4)

64.5 (100.2)

47.6 (84.1)

Body mass index (kg/m2)

409,848

377,462

787,310

 Median (IQR)

23.9 (5.0)

25.4 (4.2)

24.7 (4.8)

 Underweight

1.8

0.4

1.1

 Normal weight

59.6

44.7

52.5

 Overweight

27.4

44.4

35.6

 Obesity

11.1

10.5

10.8

Blood pressure

368,420

345,653

714,073

 Systolic (mmHg), median (IQR)

123.0 (20.0)

133.0 (19.0)

128.0 (21.0)

 Diastolic (mmHg), median (IQR)

76.0 (14.0)

80.0 (14.0)

78.0 (14.0)

Blood lipids

329,591

309,130

638,721

 Total cholesterol (mmol/L), median (IQR)

5.4 (1.4)

5.8 (1.5)

5.6 (1.4)

 Triglycerides (mmol/L), median (IQR)

1.1 (0.8)

1.7 (1.3)

1.4 (1.1)

  1. Data are presented as number of participants or column percentages, unless otherwise indicated. Because of rounding, percentages may not sum up to 100%
  2. No. number, IQR inter-quartile range.
  3. aAt study entry.
  4. bFor current and former smokers.
Back to article page