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Table 3 The results of Tobit regression and generalized linear models analyses on utility index and VAS score

From: Independent and combined effects of sleep quality and night sleep duration on health-related quality of life in rural areas: a large-scale cross-sectional study

  Model 1 (β (95% CI)) Model 2 (β (95% CI)) Model 3 (β (95% CI))
Utility index VAS score Utility index VAS score Utility index VAS score
Sleep quality       
 Poor − 0.151 (− 0.161, − 0.142) − 7.59 (− 8.07, − 7.12) − 0.130 (− 0.139, − 0.120) − 6.69 (− 7.16, − 6.23) − 0.124 (− 0.133, − 0.114) − 6.25 (− 6.71, − 5.78)
 Good Ref Ref Ref Ref Ref Ref
Night sleep duration       
 < 6 h − 0.053 (− 0.070, − 0.036) − 2.35 (− 3.17, − 1.54) − 0.045 (− 0.062, − 0.028) − 2.14 (− 2.94, − 1.35) − 0.043 (− 0.059, − 0.026) − 2.00 (− 2.78, − 1.21)
 6  h- − 0.020 (− 0.032, − 0.008) − 0.50 (− 1.06, 0.06) − 0.020 (− 0.031, − 0.008) − 0.56 (− 1.11, − 0.02) − 0.020 (− 0.032, − 0.009) − 0.58 (− 1.11, − 0.04)
 7 h- Ref Ref Ref Ref Ref Ref
 8 h- − 0.019 (− 0.030, − 0.008) − 0.29 (− 0.80, 0.21) − 0.007 (− 0.017, 0.004) 0.19 (− 0.30, 0.68) − 0.005 (− 0.016, 0.009) 0.26 (− 0.22, 0.75)
 9 h- − 0.052 (− 0.068, − 0.037) − 1.13 (− 1.85, − 0.41) − 0.026 (− 0.041, − 0.011) 0.04 (− 0.67, 0.74) − 0.023 (− 0.038, − 0.009) 0.15 (− 0.54, 0.84)
 ≥10 h − 0.125 (− 0.149, − 0.101) − 5.19 (− 6.38, − 4.01) − 0.076 (− 0.099, − 0.053) − 2.87 (− 4.03, − 1.71) − 0.071 (− 0.095, − 0.049) − 2.52 (− 3.66, − 1.39)
  1. Model 1: Unadjusted
  2. Model 2: Adjusted age, gender, marital status, education level, average monthly income, physical activity, smoking status, drinking status and napping
  3. Model 3: Adjusted common chronic diseases based on model 2 (including hypertension, dyslipidemia, T2DM, CHD and stroke)
  4. CI, confidence interval; Ref., reference