Table 1

- Sociodemographic characteristics of participants.

Characteristicsn%
Sex
Female13150.6
Male12849.4
Age (year)
≤20259.7
21–3011042.5
31–409637.0
41–502610.0
>5020.7
Mean ± SD30.2±8.6
Handedness
Left2710.4
Right23289.6
Education level
Below high school249.3
High school9335.9
Graduate13652.5
Postgraduate62.3
Marital status
Single12447.9
Married12648.6
Divorced72.7
Widowed20.8
Employed
No10440.2
Yes15559.8
Work timing
Day time13083.8
Shifts (morning, evening, or night)2516.1