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Table 4 Multivariate logistic regression analysis of factors associated with long sleep duration

From: Social-biological influences on sleep duration among adult residents of Northeastern China

Factors β χ 2 P OR 95% CI
Sex
 Male −0. 176 3. 595 0. 058 0. 839 (0.700, 1.006)
 Female 0       1   
Age
 Young 0   5. 853 0. 054 1   
 Middle age −0. 216 5. 595 0. 018 0. 806 (0.674, 0.964)
 Elderly −0. 127 1. 081 0. 299 0. 881 (0.694, 1.119)
Ethnicity
 Han 0. 272 3. 177 0. 075 1. 312 (0.973, 1.769)
 Others 0       1   
Place of residence
 Urbanite 0. 326 9. 952 0. 002 1. 386 (1.131, 1.697)
 Countryside 0       1   
Occupation
 Mental worker 0   13. 321 0. 001 1   
 Manual worker 0. 160 1. 264 0. 261 1. 174 (0.888, 1.552)
 Others 0. 538 10. 017 0. 002 1. 713 (1.227, 2.392)
Educational level
 Primary school or below 0   12. 837 0. 005 1   
 Junior middle school −0. 190 3. 230 0. 072 0. 827 (0.672, 1.017)
 Senior middle school −0. 443 11. 895 0. 001 0. 642 (0.499, 0.826)
 Undergraduate or above −0. 450 6. 741 0. 009 0. 607 (0.416, 0.885)
Average monthly earnings (¥)
  < 500 0   5. 201 0. 074 1   
 500- −0. 223 5. 093 0. 024 0. 800 (0.658, 0.971)
 3000- −0. 153 0. 583 0. 445 0. 858 (0.579, 1.271)
Physical exercise
 Never 0   11. 150 0. 004 1   
 Sometimes −0. 025 0. 051 0. 821 0. 975 (0.782, 1.215)
 Often −0. 300 9. 991 0. 002 0. 741 (0.616, 0.893)
BMI
 Normal 0   8. 822 0. 032 1   
 Underweight 0. 129 0. 358 0. 550 1. 138 (0.745, 1.737)
 Overweight −0. 234 6. 927 0. 008 0. 791 (0.664, 0.942)
 Obesity −0. 034 0. 098 0. 754 0. 967 (0.781, 1.196)
  1. 1:the reference cell