Table 1.

Participants’ characteristics at baseline (N = 1359).

Variables	n	%	Mean	(Range)	SD
Age (years)	1359		41.1	(18–66)	11.2
Sex, male	1034	76.1
Work performance	1341		54.3	(0–100)	17.9
Problem-focused	1320		15.2	(6–24)	3.8
Active coping	1332		5.3		1.4
Use of instrumental support	1330		4.7		1.7
Planning	1334		5.2		1.6
Emotion-focused	1309		20.6	(10–40)	4.9
Acceptance	1334		5.4		1.5
Use of emotional support	1332		4.1		1.6
Humor	1328		3.8		1.6
Positive reframing	1331		4.5		1.5
Religion	1331		2.7		1.1
Dysfunctional	1293		22.7	(12–48)	5.6
Behavioral disengagement	1331		3.6		1.4
Denial	1327		2.7		1.2
Self-distraction	1335		4.7		1.6
Substance use	1327		3.3		1.8
Self-blame	1331		4.3		1.7
Venting	1331		4.1		1.5
PSS-10 score	1294		18.4	(4–37)	4.9
Form of employment
Standard	1194	87.9
Non-standard	158	11.6
Unknown	3	0.2
Work shift
Non-shiftwork	785	57.8
Shiftwork	571	42.0
Unknown	3	0.2
Overworking hours per month
<45 h	1169	86.0
45–80 h	133	9.8
≥80 h	10	0.7
Unknown	47	3.5
Number of days off/month
<4 days	185	13.6
4–7 days	337	24.8
8–11 days	683	50.3
≥12 days	115	8.5
Unknown	39	2.9
Sleep duration
<5 h/day	186	13.7
5–6 h/day	376	27.7
6–7 h/day	644	47.4
7–8 h/day	87	6.4
≥8 h/day	36	2.6
Unknown	30	2.2
Exercise habits (>1 h/week)
Yes	1076	79.2
No	251	18.5
Unknown	32	2.4
Current smoking (%)
Yes	921	67.8
No	411	30.2
Unknown	27	2.0
Alcohol use
Daily	358	26.3
Sometimes	463	34.1
Never	513	37.7
Unknown	25	1.8

PSS-10: Perceived Stress Scale.