Table 1. Demographics statistics (N=133)

Characteristics		n	%
Gender	Male	112	84.2
	Female	21	15.8
Age (year)	20∼<30	79	59.4
	30∼<40	40	30.1
	≥40	14	10.5
Education	≤Associate degree	74	55.6
	Bachelor degree	48	36.1
	≥Master degree	11	8.3
Marital status	Unmarried	97	72.9
	Married	36	27.1
Living arrangement	Alone	72	54.1
	With family	46	34.6
	With roommate	15	11.3
Working department	Approach control	63	47.4
	Local/ground control	62	46.6
	Ramp control	8	6.0
Type of rotating shifts	D-N-O	14	10.5
	D-D-N-N-O-O	110	82.7
	D-N-O-O	9	6.8

Note. D=day shift; N=night shift; O=day-off.