Table 4 -. Logistic regression with selection of stepwise variables to predict the reaction dimension in nursing students (n=796). Lima, Peru, 2021.

Variable	b*	SE †	Exp (b) ‡
Intercept	0.73 ||	0.41	2.09
Position when using ED § (sitting upright)	-0.89 ¶	0.20	0.41
Position when using ED § (lying down)	-0.36	0.56	0.69
Age (20-29 years old)	0.30	0.24	1.36
Age (30-39 years old)	-0.63	0.25	0.53
Age (>40 years old)	-1.00	0.35	0.37
Time using the ED § (>5 hours)	0.73**	0.61	2.08
Screen brightness (bright)	0.23	0.24	1.27
Screen brightness (very bright)	1.36 ¶	0.22	3.91
Sex (Male)	-0.65**	0.49	0.52
Occupation (study and work)	-0.37	0.24	0.69

^*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