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Table 1 Sleep duration: distributions of variables, prevalence table

From: Sociodemographic and socioeconomic differences in sleep duration and insomnia-related symptoms in Finnish adults

   Sleep duration1
   <5 h 5 h 6 h 7 h 8 h 9 h ≥10 h
  N2 % (95% CI) % (95% CI) % (95% CI) % (95% CI) % (95% CI) % (95% CI) % (95% CI)
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)
 3rd 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)
 2nd 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
  1. 1 Adjusted for age and gender, 2 Depending on variable missing information n = 0–133, 3 Adjusted for age, 4 Adjusted for gender