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Table 2 Association between sleep duration and mental health in Korean adults aged ≥19 years participating in KNHANES V

From: The association between mental health, chronic disease and sleep duration in Koreans: a cross-sectional study

   Sleep durations Comparison between ≤6 h and 7–8 h (Ref) of sleep Comparison between ≥9 h and 7–8 h (Ref) of sleep
  Factorsa OR (95 % CI) OR (95 % CI)
   ≤6 7 ~ 8 ≥9 p-value Crude Sociodemographic factors adjustedb Fully adjusted (including chronic disease) Crude Sociodemographic factors adjustedb Fully adjusted (including chronic disease)
Men   n = 3110 n = 3861 n = 511        
  Stress perception           
   High 833 (48.2) 797 (46.1) 100 (5.8) <.0001 1.37 (1.14–1.65) 1.40 (1.14–1.72) 1.43 (1.15–1.78) 0.95 (0.67–1.33) 1.21 (0.82–1.78) 1.09 (0.73–1.64)
   Low 1768 (39.9) 2376 (53.6) 286 (6.5)   0.96 (0.81–1.13) 0.99 (0.82–1.20) 1.00 (0.82–1.22) 0.82 (0.62–1.09) 0.99 (0.73–1.35) 0.96 (0.70–1.31)
   Almost none 509 (38.5) 688 (52.0) 125 (9.5)        
  Depressive symptom morbidity           
   No 2806 (41.2) 3556 (52.2) 445 (6.5) 0.0011       
   Yes 304 (45.0) 305 (45.2) 66 (9.8)   1.20 (0.97–1.50) 1.18 (0.93–1.49) 1.26 (0.98–1.61) 1.96 (1.36–2.82) 1.38 (0.91–2.10) 1.37 (0.88–2.15)
  Thoughts of suicide           
   No 2754 (41.0) 3527 (52.5) 443 (6.6) 0.0006       
   Yes 356 (47.0) 334 (44.1) 68 (9.0)   1.38 (1.13–1.69) 1.34 (1.07–1.67) 1.39 (1.09–1.76) 1.76 (1.23–2.51) 1.32 (0.90–1.93) 1.42 (0.94–2.15)
  Psychiatric counseling           
   No 3059 (41.5) 3818 (51.8) 499 (6.8) <.0001       
   Yes 51 (48.1) 43 (40.6) 12 (11.3)   1.59 (0.95–2.68) 1.75 (1.00–3.07) 2.21 (1.18–4.14) 4.68 (2.17–10.12) 3.44 (1.39–8.52) 4.27 (1.57–11.58)
Women n = 4274 n = 5075 n = 807         
  Stress perception           
   High 1404 (48.0) 1294 (44.2) 229 (7.8) <.0001 1.29 (1.10–1.52) 1.78 (1.46–2.16) 1.71 (1.40–2.09) 0.83 (0.62–1.11) 0.67 (0.49–0.93) 0.74 (0.52–1.04)
   Low 2239 (39.1) 3066 (53.5) 423 (7.4)   0.90 (0.77–1.04) 1.25 (1.05–1.49) 1.23 (1.03–1.47) 0.67 (0.52–0.87) 0.68 (0.51–0.90) 0.71 (0.53–0.96)
   Almost none 630 (42.1) 711 (47.6) 154 (10.3)        
  Depressive symptom morbidity           
   No 3476 (41.1) 4343 (51.3) 648 (7.7) <.0001       
   Yes 797 (47.3) 731 (43.4) 158 (9.4)   1.41 (1.23–1.60) 1.21 (1.05–1.40) 1.71 (1.40–2.09) 1.55 (1.22–1.96) 1.19 (0.92–1.55) 0.74 (0.52–1.04)
  Thoughts of suicide           
   No 3405 (40.9) 4281 (51.4) 647 (7.8) <.0001       
   Yes 869 (47.8) 790 (43.5) 159 (8.8)   1.39 (1.22–1.58) 1.12 (0.97–1.30) 1.13 (0.98–1.30) 1.37 (1.07–1.76) 1.00 (0.76–1.32) 1.00 (0.76–1.31)
  Psychiatric counseling           
   No 4135 (42.0) 4947 (50.2) 775 (7.9) 0.1502       
   Yes 139 (46.8) 126 (42.4) 32 (10.8)   1.12 (0.83–1.51) 1.10 (0.81–1.51) 1.13 (0.83–1.55) 1.56 (0.99–2.46) 1.14 (0.68–1.90) 1.14 (0.69–1.87)
  1. Multinomial logistic regression analysis
  2. aCalculated using Rao-scott chi-square test
  3. bAdjusted for age, sex, household income, education, marital status, employment, BMI, smoking, alcohol consumption, level of daily activity, subjective health, bed rest for the past month and absence from work for the past month