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|
Variable
|
Adjusted
|
|---|
|
OR
|
95% CI
|
|---|
|
Sex
|
|
Female
|
1.00
| |
|
Male
|
0.88
|
0.83 ~ 0.93
|
|
Age (year)
|
|
15-29
|
1.00
| |
|
30-39
|
1.45
|
1.33 ~ 1.58
|
|
40-49
|
1.87
|
1.72 ~ 2.04
|
|
50-59
|
2.44
|
2.22 ~ 2.68
|
|
60-
|
3.12
|
2.77 ~ 3.51
|
|
Income (won)
|
|
-990,000
|
1.00
| |
|
1,000,000-1,990,000
|
0.97
|
0.89 ~ 1.06
|
|
2,000,000-2,990,000
|
0.91
|
0.82 ~ 1.00
|
|
3,000,000-
|
0.88
|
0.79 ~ 0.98
|
|
Education
|
|
Middle school graduation or less
|
1.00
| |
|
High graduation
|
0.69
|
0.63 ~ 0.75
|
|
University graduation or more
|
0.69
|
0.62 ~ 0.76
|
|
Occupation
|
|
White collar
|
1.00
| |
|
Service, sales worker
|
0.96
|
0.90 ~ 1.03
|
|
Blue collar
|
1.11
|
1.04 ~ 1.20
|
|
Employment type
|
|
Regular
|
1.00
| |
|
Temporary or part-time
|
1.35
|
1.27 ~ 1.44
|
|
Work hours per week (hours)
|
|
≤ 45 h
|
1.00
| |
|
> 45 h
|
1.33
|
1.25 ~ 1.40
|
|
Shift work
|
|
No
|
1.00
| |
|
Yes
|
0.73
|
0.67 ~ 0.81
|
|
Work at night
|
|
No
|
1.00
| |
|
Yes
|
1.27
|
1.17 ~ 1.38
|
|
Work in the evening
|
|
No
|
1.00
| |
|
Yes
|
1.15
|
1.08 ~ 1.23
|
|
Work on Sundays
|
|
No
|
1.00
| |
|
Yes
|
1.13
|
1.06 ~ 1.20
|
|
Working more than 10 h a day
|
|
No
|
1.00
| |
|
Yes
|
1.11
|
1.04 ~ 1.18
|
- Odds ratios and 95% confidence intervals were estimated by a multiple logistic regression model including all the variables in the table
