Table A5  Results of Multivariate Regression Analysis Models, with Quality of Sleep as Dependent Variable and Feeling of Upset and Sociodemographic Characteristics as Independent Variables.
95% Confidence Interval
Predictor  Estimate  SE  Z   p  Odds Ratio  Lower  Upper
Intercept  −1.4162  0.367  −3.863  <0.001  0.243  0.118  0.498
Sex
 Male–Female  −0.8490  0.272  −3.116  0.002  0.428  0.251  0.730
Age class
 Aged–Adult  −0.6390  0.424  −1.507  0.132  0.528  0.230  1.212
 Middle-aged Adult  −0.0489  0.190  −0.257  0.797  0.952  0.656  1.382
Education level
 High–Low  −1.2453  0.358  −3.483  <0.001  0.288  0.143  0.580
 Medium–Low  −0.9358  0.352  −2.657  0.008  0.392  0.197  0.782
Upset
 Yes–No  1.1042  0.184  6.012  <0.001  3.017  2.105  4.324