Self-perceived sleepiness in emergency training physicians: prevalence and relationship with quality of life

Table 3 Univariate analysis of socio-demographic, general and sleep caracteristics affecting quality of life of participants

Variables	EQ index			EQ VAS
Variables	β	95% CI	P	β	95% CI	P
Socio-demographioc characteristics
Age (per year)	0.11	−0.01; 0.03	0.22	0.3	−0.9; 1.5	0.64
Sex
Male	0	----	----	7.7	−0.9; 16.4	0.08
Female	−0.12	−0.25; 0	0.05	0	----	----
Marital status
Married	0	----	----	0	----	----
Unmarried	−0.78	−0.24; 0.09	0.36	0.4	−10.9; 11.6	0.09
General characteristics
Training year
First year	−0.11	−0.24; 0.37	0.15	−5	−14; 4.5	0.30
Second year and more	0	---	---	0	----	----
Work hours (per day)	0	−0.002; 0	0.26	−0.01	−0.07; 0.04	0.55
Tabac
Yes	0.08	−0.13; 0.3	0.45	4.3	−10.7; 19.5	0.5
No	0	---	----	0	----	----
Caffeine intake
Yes	0	----	----	0	----	----
No	0.09	−0.2; 0.03	0.14	−10.6	−19.01; -2.3	0.01
Exercice
Yes	0	----	----	0	----	----
No	−0.18	−0.009; -0.35	0.04	−7.8	−19.8; 4.1	0.19
Change in body weight
Yes	−0.07	−0.2; 0.07	0.33	−2.05	−12.4; 8.3	0.7
No	0	----	----	0	---	----
Weight gain (per kg)	−0.01	−0.05; 0.01	0.36	−0.03	−3.05; 2.9	0.9
Weight loss (per kg)	−0.007	−0.03; 0.01	0,6	0.17	−1.5; 1.9	0.8
Sleep characteristics
Shift- off sleep hour
≤4 h	−0.31	−0.8; 0.2	0.23	−14.3	−52.2; 23.6	0.46
4-6 h	−0.12	−0.2; -0.005	0.04	−9.6	−18.4; -0.8	0.03
>6 h	0	----	----	0	----	----
Shift- on sleep hour
≤4 h	−0.1	−0.3; 0.1	0.32	−14.6	−29.7; 0.3	0.05
4-6 h	−0.3	−0.6; -0.006	0.04	−13.5	−37.2; 10.1	0.26
>6 h	0	----	----	0	----	----
Self perceived sleepiness
No sleepiness	0.1	−0.04; 0.31	0.14	10.5	−1.3; 22.3	0.08
Excessive sleepiness	0.0 3	−0.11; 0.19	0.63	7.08	−3.5; 17.6	0.18
Severe sleepiness	0	----	----	0	----	----

SD standard deviation, h hours, EQ5D Euroqol 5 dimension EQ index Euroqol index, EQ VAS Euroqolvisual analogic scale, Kg kilogramme, CI confidence interval. β: β coefficient from the multivariate lineal regression, after adjustment by all relevant variables. Positive values indicate better quality of life on that domain for that category; negative values indicate poorer quality of life compared with the reference category. 0 indicated reference.