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Table 3 Hierarchical multiple regression of explanatory variables for depressive symptoms

From: The relationship between depressive symptoms among female workers and job stress and sleep quality

Variables Model I   Model II   Model III   Model IV  
  B t B t B t B t
Age (year) −0.223 −6.294* −0.223 −6.891* −0.182 −5.666* −0.189 −6.299*
Marital status         
Unmarried 2.965 7.148* 2.484 6.554* 1.493 3.929* 1.351 3.811*
Divorced/Widowed 8.181 4.431* 8.733 5.182* 7.451 4.439* 8.029 5.126*
Education level −2.931 −10.195* −2.134 −8.092* −2.030 −7.723* −1.532 −6.227*
Alcohol drinking 0.469 1.669* 0.643 2.507* −0.044 −0.172* 0.187 0.782*
BMI (kg/m2) 0.196 4.389* 0.171 4.189* 0.091 2.243* 0.089 2.333*
Job tenure (years) 0.004 0.088* 0.042 1.068* −0.037 −0.948* 0.001 0.033*
Job stress (KOSS-SF)    0.368 31.272*    0.301 26.934*
Sleep Quality (PSQI)      1.491 32.015* 1.235 27.756*
Constant 13.102   −4.061   7.592   −5.524  
F  51.557*    176.397*    182.709*    267.151*  
Adjusted R2 0.068*   0.223*   0.229*   0.329*  
R2 change 0.069*   0.156*   0.162*   0.261*  
  1. Model I: adjusted by age, marital status, education level, alcohol drinking, BMI ,job tenure.
  2. Model II: adjusted for modelI plus job stress (KOSS-SF).
  3. ModelIII: adjusted for modelI plus sleep quality (PSQI).
  4. ModelIV: adjusted for modelI plus job stress (KOSS-SF) and sleep quality (PSQI).
  5. *p<0.001
  6. m0061rital status (0:married, 1:unmarried, 2:divorced/widowed).
  7. education level (0:high school graduate, 1:college graduate).
  8. alcohol drinking(0:no, 1:yes).