Table 3.

Final model in an 18-step backward stepwise regression analysis predicting MBI emotional exhaustion (EE) scores

Variable (variable type/reference category)	B (SE)	95% CI	β	p
Constant	27.16 (0.87)	25.45; 28.87
Year of study (categorical)
Third year (reference: first year)	−3.36 (1.43)	−6.17; −0.54	−0.13*	0.020*
Level of physical activity (categorical)
Low level (reference: high level)	5.62 (1.99)	1.69; 9.55	0.15	0.005**
FFQ Sweet Foods Score (continuous)	0.09 (0.05)	−0.01; 0.18	0.09	0.081
Smoking status (categorical)
Ex-smoker (reference: never smoked)	5.81 (2.29)	1.29; 10.33	0.14	0.012*

R ² for step 1=0.096, ΔR ² for final step=−0.005 (final model p<0.001).

^* p<0.05

^** p<0.01.