7. Which of the following would be suitable predictor variables in a logistic regression model?

a) Heart rate (measured in beats per minute)

b) Waist/hip ratio (cut into quintiles)

c) Gender (male or female)

d) All of the above

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The next questions refer to a study predicting the presence of depression from severity of life events over the previous six months (measured on a continuous scale, with higher scores indicating greater severity) and gender (coded 0 - female, 1 - male). The model summary output showed: Omnibus Tests of Model Coefficients Chi-square df Sig Step 1 Step 24.664 Block 24.664 Model 24.654 222 2 .000 .000 2 .000 Model Summary -2 Log Step likelihood. Cox & Snell R Square Nagelkerke R Square 1 20.323 460 682 a. Estimation terminated at iteration number 7 because parameter estimates changed by less than 001