Table 2 -. Logistic regression with stepwise variable selection for predicting the total scale of academic stress in nursing students (n=796). Lima, Peru, 2021.

Variable	b*	SE †	Exp (b) ‡
Intercept	1.02 ||	0.43	2.78
Time of use of the ED § (>5 hours)	1.04 ¶	0.26	2.85
Position when using ED § (sitting upright)	-0.87 ¶	0.23	0.42
Position when using the ED § (lying down)	-0.83	0.63	0.44
Age (20-29 years old)	0.10	0.30	1.11
Age (30-39 years old)	-0.96 ||	0.38	0.38
Age (>40 years old)	-1.12	0.63	0.33
Screen brightness (bright)	0.39	0.25	1.49
Screen brightness (very bright)	1.73**	0.64	5.66
Sex (Male)	-0.76**	0.27	0.47
Distance between the face and DE § (30-50 centimeters)	0.61 ||	0.24	1.85
Distance between face and DE § (>50 centimeters)	0.27	0.47	1.31

^*b = Non-standard coefficient;

^† SE = Standard error;

^‡ B = Standard coefficient;

^§ ED = Electronic device;

^|| P value < 0.05;

^¶ P value < 0.001;

^**P value < 0.01