Table 1 Sleep duration: distributions of variables, prevalence table

Gender ³

5578

 Male

2542

4.92 (4.16, 5.80)

3.03 (2.40, 3.82)

12.5 (11.2, 13.8)

37.9 (36.0, 39.8)

33.6 (31.9, 35.4)

5.55 (4.66, 6.52)

2.52 (1.98, 3.20)

 Female

3036

4.26 (3.56, 5.09)

2.63 (2.15, 3.22)

9.77 (8.67, 11.0)

32.6 (31.0, 34.3)

38.1 (36.4, 39.8)

9.73 (8.76, 10.8)

2.93 (2.41, 3.57)

Age ⁴

5578

 30–39

1343

2.10 (1.45, 3.04)

1.28 (0.81, 2.01)

9.07 (7.72, 10.6)

34.1 (31.5, 36.9)

40.5 (37.8, 43.3)

11.3 (9.75, 13.0)

1.59 (1.05, 2.42)

 40–49

1443

2.87 (2.01, 3.92)

2.23 (1.66, 2.98)

10.0 (8.64, 11.5)

37.7 (35.1, 40.4)

38.9 (36.3, 41.5)

6.17 (5.12, 7.41)

2.17 (1.54, 3.05)

 50–59

1311

4.69 (3.61, 6.06)

3.37 (2.49, 4.56)

12.6 (10.7, 14.6)

38.0 (35.6, 40.5)

34.2 (31.6, 36.8)

4.90 (3.87, 6.18)

2.29 (1.58, 3.30)

 60–69

910

5.84 (4.50, 7.54)

3.41 (2.37, 4.89)

10.4 (8.56, 12.6)

33.5 (30.6, 36.6)

33.6 (30.6, 36.6)

9.10 (7.41, 11.1)

4.12 (2.97, 5.69)

 70–79

571

11.8 (9.54, 14.6)

5.41 (3.85, 7.56)

15.4 (12.4, 18.9)

26.8 (23.6, 30.2)

26.9 (23.2, 30.9)

8.18 (5.86, 11.3)

5.47 (3.94, 7.57)

Parental education

5445

 High

338

3.11 (1.55, 6.12)

0.77 (0.19, 2.98)

11.6 (8.60, 15.4)

35.9 (31.0, 41.1)

37.7 (32.5, 43.2)

9.48 (6.86, 13.0)

1.50 (0.59, 3.76)

 Intermediate

432

3.10 (1.65, 5.77)

3.87 (2.25, 6.57)

9.77 (7.12, 13.2)

34.8 (30.8, 39.1)

36.7 (32.2, 41.4)

7.78 (5.67, 10.6)

3.96 (2.34, 6.60)

 Low

4581

4.56 (3.97, 5.22)

2.84 (2.38, 3.39)

11.2 (10.3, 12.1)

35.3 (33.9, 36.7)

35.8 (34.4, 37.2)

7.64 (6.91, 8.45)

2.72 (2.27, 3.26)

 Do not know

94

6.29 (2.99, 12.7)

3.76 (1.46, 9.34)

6.34 (3.02, 12.9)

37.8 (28.7, 47.8)

36.8 (28.4, 46.0)

8.12 (3.92, 16.1)

0.89 (0.12, 6.27)

Marital status

5578

 Married/living together

4060

4.05 (3.40, 4.80)

2.49 (2.03, 3.05)

9.82 (8.87, 10.9)

35.9 (34.3, 37.6)

37.5 (36.2, 38.9)

7.72 (6.92, 8.61)

2.44 (1.98, 3.00)

 Single

621

6.04 (4.32, 8.39)

2.42 (1.43, 4.08)

13.1 (10.5, 16.1)

31.6 (28.1, 35.3)

32.8 (29.1, 36.7)

9.18 (7.20, 11.6)

4.90 (3.37, 7.07)

 Divorced/separated

553

6.35 (4.55, 8.80)

4.08 (2.78, 5.95)

15.5 (12.8, 18.6)

33.1 (29.7, 36.6)

29.8 (26.1, 33.8)

7.51 (5.70, 9.83)

3.64 (2.38, 5.53)

 Widowed

344

4.78 (3.23, 7.01)

4.44 (2.76, 7.06)

14.4 (11.0, 18.5)

35.4 (29.9, 41.2)

33.5 (28.5, 38.9)

5.45 (3.39, 8.65)

2.10 (1.18, 3.68)

Number of children

5568

 No under 18 years old children

3633

4.77 (4.16, 5.46)

2.94 (2.42, 3.56)

11.5 (10.3, 12.7)

34.6 (32.8, 36.3)

35.4 (33.7, 37.2)

7.80 (6.87, 8.84)

3.03 (2.52, 3.63)

 Under 7-year-olds

414

3.85 (1.79, 8.07)

0.44 (0.06, 3.32)

9.78 (6.93, 13.6)

35.5 (31.0, 40.2)

39.0 (34.0, 44.2)

10.1 (7.33, 13.7)

1.41 (0.52, 3.71)

 7–17-year-olds

1125

3.93 (2.73, 5.62)

2.57 (1.60, 4.11)

10.7 (8.98, 12.7)

37.6 (34.8, 40.5)

36.8 (34.1, 39.5)

6.42 (5.14, 7.99)

1.96 (1.21, 3.17)

 Both

396

3.52 (1.73, 7.04)

4.17 (2.16, 7.90)

8.99 (6.15, 13.0)

36.1 (31.4, 41.1)

37.4 (32.7, 42.4)

8.40 (5.96, 11.7)

1.38 (0.50, 3.76)

Own education (years)

5560

 high (> 12)

2045

2.71 (1.96, 3.73)

1.60 (1.06, 2.40)

10.1 (8.82, 11.6)

37.0 (34.8, 39.2)

38.6 (36.4, 40.9)

8.11 (7.05, 9.32)

1.87 (1.32, 2.66)

 medium (10–12)

1551

4.90 (3.85, 6.21)

3.70 (2.78, 4.89)

10.9 (9.46, 12.6)

36.5 (33.8, 39.4)

34.2 (31.8, 36.8)

6.84 (5.76, 8.10)

2.85 (2.05, 3.94)

 low (7–9)

1559

5.54 (4.48, 6.83)

3.22 (2.51, 4.12)

11.7 (10.0, 13.7)

33.3 (30.4, 36.4)

35.1 (32.6, 37.7)

8.00 (6.61, 9.64)

3.08 (2.37, 4.01)

 very low (< 7)

405

5.56 (3.92, 7.83)

2.96 (1.80, 4.83)

13.3 (10.1, 17.3)

30.4 (25.5, 35.8)

34.0 (29.1, 39.2)

9.75 (6.33, 14.7)

4.10 (2.68, 6.21)

Household income level

5453

 Highest income quartile

1491

3.80 (2.91, 4.95)

2.32 (1.60, 3.35)

10.4 (8.95, 11.9)

40.4 (38.0, 42.9)

35.9 (33.4, 38.5)

5.89 (4.84, 7.20)

1.28 (0.82, 2.00)

 3^rd

1528

4.25 (3.30, 5.45)

2.52 (1.72, 3.67)

10.6 (9.07, 12.4)

35.5 (32.7, 38.4)

37.4 (35.0, 39,9)

8.06 (6.82, 9.50)

1.59 (1.04, 2.40)

 2^nd

1314

5.13 (4.09, 6.42)

2.97 (2.16, 4.05)

11.2 (9.50, 13.0)

34.0 (31.5, 36.5)

35.6 (33.1, 38.1)

7.85 (6.43, 9.54)

3.38 (2.60, 4.39)

 Lowest income quartile

1120

5.15 (4.10, 6.45)

3.86 (2.98, 4.99)

11.9 (10.1, 13.8)

29.8 (27.2, 32.5)

34.7 (31.7, 37.7)

10.0 (8.28, 12.0)

4.68 (3.62, 6.03)

Employment status

5578

 Working

3363

4.44 (3.39, 5.81)

2.67 (1.93, 3.70)

11.7 (10.4, 13.1)

39.4 (37.3, 41.6)

35.7 (33.9, 37.5)

5.27 (4.55, 6.09)

0.83 (0.58, 1.17)

 Unemployed

420

6.53 (4.21, 9.97)

3.80 (2.21, 6.43)

10.3 (7.48, 14.0)

31.8 (27.5, 36.4)

33.6 (29.2, 38.2)

9.20 (7.03, 12.0)

4.81 (3.16, 7.24)

 Disability pension

427

5.74 (4.01, 8.15)

4.33 (2.78, 6.70)

11.1 (8.51, 14.4)

24.9 (20.9, 29.3)

31.2 (27.0, 35.7)

13.7 (9.65, 19.1)

8.97 (6.10, 13.0)

 Old age retirement

1022

3.86 (2.94, 5.06)

2.45 (1.65, 3.63)

9.35 (7.45, 11.7)

25.5 (21.9, 29.5)

35.2 (30.7, 40.0)

18.1 (13.2, 24.4)

5.44 (3.39, 8.61)

 Other pension

135

5.06 (2.78, 9.03)

1.08 (0.28, 4.08)

6.90 (3.79, 12.2)

34.1 (26.1, 43.1)

37.0 (28.2, 46.7)

12.1 (6.92, 20.3)

3.76 (1.54, 8.90)

 Other

211

3.87 (1.49, 9.65)

2.41 (0.72, 7.72)

9.15 (5.74, 14.3)

27.0 (20.8, 34.2)

40.7 (33.4, 48.3)

11.8 (8.71, 15.8)

5.12 (2.82, 9.12)

Residential area

5578

 Urban town

3421

4.23 (3.60, 4.96)

2.63 (2.14, 3.24)

11.5 (10.5, 12.6)

36.2 (34.5, 37.9)

35.5 (34.0, 37.0)

7.66 (6.81, 8.59)

2.33 (1.91, 2.84)

 Densely populated municipality

805

5.14 (4.06, 6.48)

2.95 (2.15, 4.01)

9.50 (7.17, 12.5)

34.0 (31.1, 37.0)

37.7 (34.5, 40.8)

7.55 (5.89, 9.63)

3.20 (2.37, 4.31)

 Rural municipality

1352

5.01 (3.92, 6.38)

3.22 (2.29, 4.52)

10.8 (9.13, 12.6)

33.1 (30.9, 35.4)

35.7 (33.5, 38.0)

8.70 (7.39, 10.2)

3.47 (2.50, 4.79)

Self-perceived health

5568

 Good

1899

3.02 (2.21, 4.10)

1.92 (1.34, 2.75)

9.90 (8.58, 11.4)

37.9 (35.7, 40.2)

38.2 (36.1, 40.4)

7.77 (6.60, 9.04)

1.28 (0.85, 1.92)

 Quite good

1709

4.21 (3.37, 5.25)

1.73 (1.19, 2.52)

10.9 (9.38, 12.5)

37.0 (34.8, 39.3)

36.4 (34.4, 38.6)

7.56 (6.52, 8.74)

2.20 (1.64, 2.93)

 Mediocre

1425

4.78 (3.91, 5.85)

3.40 (2.63, 4.38)

12.5 (10.8, 14.3)

32.5 (30.2, 35.0)

35.3 (32.9, 37.8)

7.75 (6.38, 9.38)

3.74 (2.98, 4.68)

 Quite poor

401

5.61 (3.85, 8.09)

5.23 (3.41, 7.95)

13.3 (10.2, 17.2)

31.5 (27.3, 36.1)

31.1 (26.5, 36.0)

7.71 (5.37, 10.9)

5.51 (3.58, 8.37)

 Poor

134

16.6 (10.6, 24.9)

10.6 (6.61, 16.5)

9.58 (5.68, 15.7)

18.8 (12.9, 26.6)

23.7 (16.7, 32.5)

12.9 (8.19, 19.8)

7.83 (4.40, 13.5)

 Total (N)

5578

251

156

605

1942

2018

451

155