Table 1.

Socio-demographic characteristics of the study group

Parameter		Total (N = 1164)
Age [years]	M ± SD	42,19 ± 9,9
	median	44
	quartiles	35—49
Seniority [years]	< 1	73 (6,27%)
	1–5	142 (12,20%)
	6–10	86 (7,39%)
	11–15	89 (7,65%)
	16–20	144 (12,37%)
	> 20 lat	630 (54,12%)
Sex	Female	1117 (95,96%)
	Male	47 (4,04%)
Education level	Secondary education	267 (22,94%)
	Bachelor’s degree	743 (63,83%)
	Master’s degree	154 (13,23%)
Specialisation	no	665 (57,13%)
	yes	499 (42,87%)
Working system	Routine Shift	219 (18,81%)
	Long shift	864 (74,23%)
	< 1	81 (6,96%)