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Table 1 Model of the log transformated scores of the Kessler-10 questionnaire

From: Seasonality in depressive and anxiety symptoms among primary care patients and in patients with depressive and anxiety disorders; results from the Netherlands Study of Depression and Anxiety

  Empty model1 Seasons2 Full model3
Fixed Effect β (SE) β (SE) β (SE)
Intercept 2.887 (0.013) 2.863 (0.024) 2.984 (0.025)
Spring (reference)    
Summer   -0.014 (0.019) -0.015 (0.018)
Autumn   -0.002 (0.021) 0.022 (0.019)
Winter   -0.013 (0.021) -0.002 (0.019)
Men (reference)    
Women    0.065 (0.011)*
Age    -0.002 (0.000)*
Amsterdam (reference)    
Groningen    -0.127 (0.019)*
Random Effect    
Level two: General practitioner Intercept variance 0.007 (0.002) 0.007 (0.002) 0.002 (0.001)*
Level one: Individual variance 0.144 (0.003) 0.144 (0.003) 0.142 (0.003)
Deviance 5086.6 5085.6 4928.3
  1. β = Beta
  2. SE = standard error
  3. * p < 0.05
  4. 1) Empty model
  5. 2) Model with seasons
  6. 3) Full model with seasons and covariates