TABLE 2 Open in new tab Absolute...

	Number of days of dental visits during working hours	Univariable model	Fully adjusted model
Total	0.28	1.75
Place of dental check-ups
Not had the check-ups	0.14	1.18	−0.43 (−0.59;−0.26)^*	−0.43 (−0.59;−0.27)^*
At the dental clinic	0.57	2.67	ref	ref
At the workplace	0.21	1.20	−0.36 (−0.60;−0.12)^*	−0.35 (−0.58;−0.12)^*
At both the dental clinic and the workplace	0.32	1.29	−0.25 (−0.48;−0.03)^*	−0.23 (−0.45;−0.01)^*
Self−reported oral health
Excellent	0.31	1.85	ref	ref
Good	0.19	1.25	−0.12 (−0.34;0.10)	−0.13 (−0.35;0.09)
Fair	0.26	1.76	−0.06 (−0.28;0.16)	−0.07 (−0.29;0.16)
Poor	0.39	2.19	0.08 (−0.18;0.33)	0.01 (−0.25;0.27)
Very Poor	0.35	1.41	0.03 (−0.28;0.34)	−0.14 (−0.49;0.20)
Number of teeth
0–14	0.77	2.75	0.53 (0.12;0.93)^*	0.44 (0.05;0.82)^*
15–19	0.58	2.61	0.33 (0.02;0.65)^*	0.25 (−0.06;0.56)
20–23	0.21	1.41	−0.03 (−0.15;0.09)	−0.03 (−0.15;0.09)
24–27	0.21	1.69	−0.04 (−0.17;0.10)	−0.06 (−0.19;0.08)
28–32	0.25	1.63	ref	ref
Gum bleeding
Always	0.50	2.13	0.26 (−0.07;0.60)	0.24 (−0.13;0.61)
Occasionally	0.32	1.72	0.08 (−0.03;0.19)	0.08 (−0.04;0.20)
None	0.23	1.75	ref	ref
Age (years)
20–29	0.16	0.84	ref	ref
30–39	0.26	1.69	0.10 (−0.02;0.23)	0.08 (−0.05;0.20)
40–49	0.22	1.25	0.07 (−0.04;0.17)	0.01 (−0.11;0.12)
50–59	0.32	1.93	0.17 (0.02;0.31)^*	0.06 (−0.10;0.21)
60–65	0.54	3.01	0.38 (0.09;0.67)^*	0.21 (−0.07;0.49)
Gender
Male	0.28	1.74	0.00 (−0.11;0.11)	−0.01 (−0.14;0.12)
Female	0.28	1.77	ref	ref
Education (graduation)
High school	0.26	1.60	−0.01 (−0.12;0.11)	−0.05 (−0.18;0.07)
Vocational school, Junior college	0.35	2.22	0.08 (−0.08;0.25)	0.07 (−0.09;0.24)
University, Master’s program, Doctoral program	0.26	1.61	ref	ref
Personal income
<¥2 million	0.38	1.68	0.20 (0.01;0.38)^*	0.18 (−0.06;0.42)
¥2–4 million	0.26	1.90	0.08 (−0.08;0.24)	0.10 (−0.09;0.29)
¥4–6 million	0.28	1.82	0.10 (−0.08;0.28)	0.12 (−0.07;0.32)
¥6–8 million	0.35	1.74	0.17 (−0.06;0.41)	0.18 (−0.06;0.42)
>¥8 million	0.18	0.95	ref	ref
Unknown	0.22	1.54	0.04 (−0.14;0.23)	0.09 (−0.11;0.30)
Chronic disease
None	0.18	1.25	ref	ref
Present	0.53	2.67	0.35 (0.18;0.52)^*	0.26 (0.12;0.41)^*
Industrial classification
Primary industry	0.54	3.01	ref	ref
Secondary Industry	0.30	1.76	−0.24 (−0.59;0.11)	−0.15 (−0.48;0.19)
Tertiary industry	0.24	1.53	−0.30 (−0.65;0.04)	−0.22 (−0.55;0.11)
Occupational classification
White-collar worker	0.23	1.42	ref	ref
Blue-collar worker	0.31	1.93	0.08 (−0.03;0.18)	0.05 (−0.06;0.15)
Work shifts
Day shift	0.26	1.68	ref	ref
Both day and night shifts	0.47	2.66	0.21 (−0.35;0.77)	0.17 (−0.37;0.72)
Night shift	0.25	1.76	−0.01 (−0.18;0.16)	0.03 (−0.15;0.20)
Flexes, etc.	0.52	2.36	0.26 (−0.07;0.59)	0.21 (−0.12;0.53)

Number of days of dental visits during working hours

Univariable model

Fully adjusted model

Mean

Coefficient (95% CI)

Total

0.28

1.75

Place of dental check-ups

Not had the check-ups

0.14

1.18

−0.43 (−0.59;−0.26)^*

−0.43 (−0.59;−0.27)^*

At the dental clinic

0.57

2.67

ref

At the workplace

0.21

1.20

−0.36 (−0.60;−0.12)^*

−0.35 (−0.58;−0.12)^*

At both the dental clinic and the workplace

0.32

1.29

−0.25 (−0.48;−0.03)^*

−0.23 (−0.45;−0.01)^*

Self−reported oral health

Excellent

0.31

1.85

ref

Good

0.19

1.25

−0.12 (−0.34;0.10)

−0.13 (−0.35;0.09)

Fair

0.26

1.76

−0.06 (−0.28;0.16)

−0.07 (−0.29;0.16)

Poor

0.39

2.19

0.08 (−0.18;0.33)

0.01 (−0.25;0.27)

Very Poor

0.35

1.41

0.03 (−0.28;0.34)

−0.14 (−0.49;0.20)

Number of teeth

0–14

0.77

2.75

0.53 (0.12;0.93)^*

0.44 (0.05;0.82)^*

15–19

0.58

2.61

0.33 (0.02;0.65)^*

0.25 (−0.06;0.56)

20–23

0.21

1.41

−0.03 (−0.15;0.09)

24–27

0.21

1.69

−0.04 (−0.17;0.10)

−0.06 (−0.19;0.08)

28–32

0.25

1.63

ref

Gum bleeding

Always

0.50

2.13

0.26 (−0.07;0.60)

0.24 (−0.13;0.61)

Occasionally

0.32

1.72

0.08 (−0.03;0.19)

0.08 (−0.04;0.20)

None

0.23

1.75

ref

Age (years)

20–29

0.16

0.84

ref

30–39

0.26

1.69

0.10 (−0.02;0.23)

0.08 (−0.05;0.20)

40–49

0.22

1.25

0.07 (−0.04;0.17)

0.01 (−0.11;0.12)

50–59

0.32

1.93

0.17 (0.02;0.31)^*

0.06 (−0.10;0.21)

60–65

0.54

3.01

0.38 (0.09;0.67)^*

0.21 (−0.07;0.49)

Gender

Male

0.28

1.74

0.00 (−0.11;0.11)

−0.01 (−0.14;0.12)

Female

0.28

1.77

ref

Education (graduation)

High school

0.26

1.60

−0.01 (−0.12;0.11)

−0.05 (−0.18;0.07)

Vocational school, Junior college

0.35

2.22

0.08 (−0.08;0.25)

0.07 (−0.09;0.24)

University, Master’s program, Doctoral program

0.26

1.61

ref

Personal income

<¥2 million

0.38

1.68

0.20 (0.01;0.38)^*

0.18 (−0.06;0.42)

¥2–4 million

0.26

1.90

0.08 (−0.08;0.24)

0.10 (−0.09;0.29)

¥4–6 million

0.28

1.82

0.10 (−0.08;0.28)

0.12 (−0.07;0.32)

¥6–8 million

0.35

1.74

0.17 (−0.06;0.41)

0.18 (−0.06;0.42)

>¥8 million

0.18

0.95

ref

Unknown

0.22

1.54

0.04 (−0.14;0.23)

0.09 (−0.11;0.30)

Chronic disease

None

0.18

1.25

ref

Present

0.53

2.67

0.35 (0.18;0.52)^*

0.26 (0.12;0.41)^*

Industrial classification

Primary industry

0.54

3.01

ref

Secondary Industry

0.30

1.76

−0.24 (−0.59;0.11)

−0.15 (−0.48;0.19)

Tertiary industry

0.24

1.53

−0.30 (−0.65;0.04)

−0.22 (−0.55;0.11)

Occupational classification

White-collar worker

0.23

1.42

ref

Blue-collar worker

0.31

1.93

0.08 (−0.03;0.18)

0.05 (−0.06;0.15)

Work shifts

Day shift

0.26

1.68

ref

Both day and night shifts

0.47

2.66

0.21 (−0.35;0.77)

0.17 (−0.37;0.72)

Night shift

0.25

1.76

−0.01 (−0.18;0.16)

0.03 (−0.15;0.20)

Flexes, etc.

0.52

2.36

0.26 (−0.07;0.59)

0.21 (−0.12;0.53)

	Number of days of dental visits during working hours	Univariable model	Fully adjusted model
Total	0.28	1.75
Place of dental check-ups
Not had the check-ups	0.14	1.18	−0.43 (−0.59;−0.26)^*	−0.43 (−0.59;−0.27)^*
At the dental clinic	0.57	2.67	ref	ref
At the workplace	0.21	1.20	−0.36 (−0.60;−0.12)^*	−0.35 (−0.58;−0.12)^*
At both the dental clinic and the workplace	0.32	1.29	−0.25 (−0.48;−0.03)^*	−0.23 (−0.45;−0.01)^*
Self−reported oral health
Excellent	0.31	1.85	ref	ref
Good	0.19	1.25	−0.12 (−0.34;0.10)	−0.13 (−0.35;0.09)
Fair	0.26	1.76	−0.06 (−0.28;0.16)	−0.07 (−0.29;0.16)
Poor	0.39	2.19	0.08 (−0.18;0.33)	0.01 (−0.25;0.27)
Very Poor	0.35	1.41	0.03 (−0.28;0.34)	−0.14 (−0.49;0.20)
Number of teeth
0–14	0.77	2.75	0.53 (0.12;0.93)^*	0.44 (0.05;0.82)^*
15–19	0.58	2.61	0.33 (0.02;0.65)^*	0.25 (−0.06;0.56)
20–23	0.21	1.41	−0.03 (−0.15;0.09)	−0.03 (−0.15;0.09)
24–27	0.21	1.69	−0.04 (−0.17;0.10)	−0.06 (−0.19;0.08)
28–32	0.25	1.63	ref	ref
Gum bleeding
Always	0.50	2.13	0.26 (−0.07;0.60)	0.24 (−0.13;0.61)
Occasionally	0.32	1.72	0.08 (−0.03;0.19)	0.08 (−0.04;0.20)
None	0.23	1.75	ref	ref
Age (years)
20–29	0.16	0.84	ref	ref
30–39	0.26	1.69	0.10 (−0.02;0.23)	0.08 (−0.05;0.20)
40–49	0.22	1.25	0.07 (−0.04;0.17)	0.01 (−0.11;0.12)
50–59	0.32	1.93	0.17 (0.02;0.31)^*	0.06 (−0.10;0.21)
60–65	0.54	3.01	0.38 (0.09;0.67)^*	0.21 (−0.07;0.49)
Gender
Male	0.28	1.74	0.00 (−0.11;0.11)	−0.01 (−0.14;0.12)
Female	0.28	1.77	ref	ref
Education (graduation)
High school	0.26	1.60	−0.01 (−0.12;0.11)	−0.05 (−0.18;0.07)
Vocational school, Junior college	0.35	2.22	0.08 (−0.08;0.25)	0.07 (−0.09;0.24)
University, Master’s program, Doctoral program	0.26	1.61	ref	ref
Personal income
<¥2 million	0.38	1.68	0.20 (0.01;0.38)^*	0.18 (−0.06;0.42)
¥2–4 million	0.26	1.90	0.08 (−0.08;0.24)	0.10 (−0.09;0.29)
¥4–6 million	0.28	1.82	0.10 (−0.08;0.28)	0.12 (−0.07;0.32)
¥6–8 million	0.35	1.74	0.17 (−0.06;0.41)	0.18 (−0.06;0.42)
>¥8 million	0.18	0.95	ref	ref
Unknown	0.22	1.54	0.04 (−0.14;0.23)	0.09 (−0.11;0.30)
Chronic disease
None	0.18	1.25	ref	ref
Present	0.53	2.67	0.35 (0.18;0.52)^*	0.26 (0.12;0.41)^*
Industrial classification
Primary industry	0.54	3.01	ref	ref
Secondary Industry	0.30	1.76	−0.24 (−0.59;0.11)	−0.15 (−0.48;0.19)
Tertiary industry	0.24	1.53	−0.30 (−0.65;0.04)	−0.22 (−0.55;0.11)
Occupational classification
White-collar worker	0.23	1.42	ref	ref
Blue-collar worker	0.31	1.93	0.08 (−0.03;0.18)	0.05 (−0.06;0.15)
Work shifts
Day shift	0.26	1.68	ref	ref
Both day and night shifts	0.47	2.66	0.21 (−0.35;0.77)	0.17 (−0.37;0.72)
Night shift	0.25	1.76	−0.01 (−0.18;0.16)	0.03 (−0.15;0.20)
Flexes, etc.	0.52	2.36	0.26 (−0.07;0.59)	0.21 (−0.12;0.53)

Number of days of dental visits during working hours

Univariable model

Fully adjusted model

Mean

Coefficient (95% CI)

Total

0.28

1.75

Place of dental check-ups

Not had the check-ups

0.14

1.18

−0.43 (−0.59;−0.26)^*

−0.43 (−0.59;−0.27)^*

At the dental clinic

0.57

2.67

ref

At the workplace

0.21

1.20

−0.36 (−0.60;−0.12)^*

−0.35 (−0.58;−0.12)^*

At both the dental clinic and the workplace

0.32

1.29

−0.25 (−0.48;−0.03)^*

−0.23 (−0.45;−0.01)^*

Self−reported oral health

Excellent

0.31

1.85

ref

Good

0.19

1.25

−0.12 (−0.34;0.10)

−0.13 (−0.35;0.09)

Fair

0.26

1.76

−0.06 (−0.28;0.16)

−0.07 (−0.29;0.16)

Poor

0.39

2.19

0.08 (−0.18;0.33)

0.01 (−0.25;0.27)

Very Poor

0.35

1.41

0.03 (−0.28;0.34)

−0.14 (−0.49;0.20)

Number of teeth

0–14

0.77

2.75

0.53 (0.12;0.93)^*

0.44 (0.05;0.82)^*

15–19

0.58

2.61

0.33 (0.02;0.65)^*

0.25 (−0.06;0.56)

20–23

0.21

1.41

−0.03 (−0.15;0.09)

24–27

0.21

1.69

−0.04 (−0.17;0.10)

−0.06 (−0.19;0.08)

28–32

0.25

1.63

ref

Gum bleeding

Always

0.50

2.13

0.26 (−0.07;0.60)

0.24 (−0.13;0.61)

Occasionally

0.32

1.72

0.08 (−0.03;0.19)

0.08 (−0.04;0.20)

None

0.23

1.75

ref

Age (years)

20–29

0.16

0.84

ref

30–39

0.26

1.69

0.10 (−0.02;0.23)

0.08 (−0.05;0.20)

40–49

0.22

1.25

0.07 (−0.04;0.17)

0.01 (−0.11;0.12)

50–59

0.32

1.93

0.17 (0.02;0.31)^*

0.06 (−0.10;0.21)

60–65

0.54

3.01

0.38 (0.09;0.67)^*

0.21 (−0.07;0.49)

Gender

Male

0.28

1.74

0.00 (−0.11;0.11)

−0.01 (−0.14;0.12)

Female

0.28

1.77

ref

Education (graduation)

High school

0.26

1.60

−0.01 (−0.12;0.11)

−0.05 (−0.18;0.07)

Vocational school, Junior college

0.35

2.22

0.08 (−0.08;0.25)

0.07 (−0.09;0.24)

University, Master’s program, Doctoral program

0.26

1.61

ref

Personal income

<¥2 million

0.38

1.68

0.20 (0.01;0.38)^*

0.18 (−0.06;0.42)

¥2–4 million

0.26

1.90

0.08 (−0.08;0.24)

0.10 (−0.09;0.29)

¥4–6 million

0.28

1.82

0.10 (−0.08;0.28)

0.12 (−0.07;0.32)

¥6–8 million

0.35

1.74

0.17 (−0.06;0.41)

0.18 (−0.06;0.42)

>¥8 million

0.18

0.95

ref

Unknown

0.22

1.54

0.04 (−0.14;0.23)

0.09 (−0.11;0.30)

Chronic disease

None

0.18

1.25

ref

Present

0.53

2.67

0.35 (0.18;0.52)^*

0.26 (0.12;0.41)^*

Industrial classification

Primary industry

0.54

3.01

ref

Secondary Industry

0.30

1.76

−0.24 (−0.59;0.11)

−0.15 (−0.48;0.19)

Tertiary industry

0.24

1.53

−0.30 (−0.65;0.04)

−0.22 (−0.55;0.11)

Occupational classification

White-collar worker

0.23

1.42

ref

Blue-collar worker

0.31

1.93

0.08 (−0.03;0.18)

0.05 (−0.06;0.15)

Work shifts

Day shift

0.26

1.68

ref

Both day and night shifts

0.47

2.66

0.21 (−0.35;0.77)

0.17 (−0.37;0.72)

Night shift

0.25

1.76

−0.01 (−0.18;0.16)

0.03 (−0.15;0.20)

Flexes, etc.

0.52

2.36

0.26 (−0.07;0.59)

0.21 (−0.12;0.53)

TABLE 2

Open in new tab

Absolute difference in the number of days of dental visits during working hours based on the place of the dental check-ups and confounders analyzed using linear regression analysis (n = 3930).

	Number of days of dental visits during working hours		Univariable model	Fully adjusted model
	Mean	SD	Coefficient (95% CI)	Coefficient (95% CI)
Total	0.28	1.75
Place of dental check-ups
Not had the check-ups	0.14	1.18	−0.43 (−0.59;−0.26)^*	−0.43 (−0.59;−0.27)^*
At the dental clinic	0.57	2.67	ref	ref
At the workplace	0.21	1.20	−0.36 (−0.60;−0.12)^*	−0.35 (−0.58;−0.12)^*
At both the dental clinic and the workplace	0.32	1.29	−0.25 (−0.48;−0.03)^*	−0.23 (−0.45;−0.01)^*
Self−reported oral health
Excellent	0.31	1.85	ref	ref
Good	0.19	1.25	−0.12 (−0.34;0.10)	−0.13 (−0.35;0.09)
Fair	0.26	1.76	−0.06 (−0.28;0.16)	−0.07 (−0.29;0.16)
Poor	0.39	2.19	0.08 (−0.18;0.33)	0.01 (−0.25;0.27)
Very Poor	0.35	1.41	0.03 (−0.28;0.34)	−0.14 (−0.49;0.20)
Number of teeth
0–14	0.77	2.75	0.53 (0.12;0.93)^*	0.44 (0.05;0.82)^*
15–19	0.58	2.61	0.33 (0.02;0.65)^*	0.25 (−0.06;0.56)
20–23	0.21	1.41	−0.03 (−0.15;0.09)	−0.03 (−0.15;0.09)
24–27	0.21	1.69	−0.04 (−0.17;0.10)	−0.06 (−0.19;0.08)
28–32	0.25	1.63	ref	ref
Gum bleeding
Always	0.50	2.13	0.26 (−0.07;0.60)	0.24 (−0.13;0.61)
Occasionally	0.32	1.72	0.08 (−0.03;0.19)	0.08 (−0.04;0.20)
None	0.23	1.75	ref	ref
Age (years)
20–29	0.16	0.84	ref	ref
30–39	0.26	1.69	0.10 (−0.02;0.23)	0.08 (−0.05;0.20)
40–49	0.22	1.25	0.07 (−0.04;0.17)	0.01 (−0.11;0.12)
50–59	0.32	1.93	0.17 (0.02;0.31)^*	0.06 (−0.10;0.21)
60–65	0.54	3.01	0.38 (0.09;0.67)^*	0.21 (−0.07;0.49)
Gender
Male	0.28	1.74	0.00 (−0.11;0.11)	−0.01 (−0.14;0.12)
Female	0.28	1.77	ref	ref
Education (graduation)
High school	0.26	1.60	−0.01 (−0.12;0.11)	−0.05 (−0.18;0.07)
Vocational school, Junior college	0.35	2.22	0.08 (−0.08;0.25)	0.07 (−0.09;0.24)
University, Master’s program, Doctoral program	0.26	1.61	ref	ref
Personal income
<¥2 million	0.38	1.68	0.20 (0.01;0.38)^*	0.18 (−0.06;0.42)
¥2–4 million	0.26	1.90	0.08 (−0.08;0.24)	0.10 (−0.09;0.29)
¥4–6 million	0.28	1.82	0.10 (−0.08;0.28)	0.12 (−0.07;0.32)
¥6–8 million	0.35	1.74	0.17 (−0.06;0.41)	0.18 (−0.06;0.42)
>¥8 million	0.18	0.95	ref	ref
Unknown	0.22	1.54	0.04 (−0.14;0.23)	0.09 (−0.11;0.30)
Chronic disease
None	0.18	1.25	ref	ref
Present	0.53	2.67	0.35 (0.18;0.52)^*	0.26 (0.12;0.41)^*
Industrial classification
Primary industry	0.54	3.01	ref	ref
Secondary Industry	0.30	1.76	−0.24 (−0.59;0.11)	−0.15 (−0.48;0.19)
Tertiary industry	0.24	1.53	−0.30 (−0.65;0.04)	−0.22 (−0.55;0.11)
Occupational classification
White-collar worker	0.23	1.42	ref	ref
Blue-collar worker	0.31	1.93	0.08 (−0.03;0.18)	0.05 (−0.06;0.15)
Work shifts
Day shift	0.26	1.68	ref	ref
Both day and night shifts	0.47	2.66	0.21 (−0.35;0.77)	0.17 (−0.37;0.72)
Night shift	0.25	1.76	−0.01 (−0.18;0.16)	0.03 (−0.15;0.20)
Flexes, etc.	0.52	2.36	0.26 (−0.07;0.59)	0.21 (−0.12;0.53)

	Number of days of dental visits during working hours		Univariable model	Fully adjusted model
	Mean	SD	Coefficient (95% CI)	Coefficient (95% CI)
Total	0.28	1.75
Place of dental check-ups
Not had the check-ups	0.14	1.18	−0.43 (−0.59;−0.26)^*	−0.43 (−0.59;−0.27)^*
At the dental clinic	0.57	2.67	ref	ref
At the workplace	0.21	1.20	−0.36 (−0.60;−0.12)^*	−0.35 (−0.58;−0.12)^*
At both the dental clinic and the workplace	0.32	1.29	−0.25 (−0.48;−0.03)^*	−0.23 (−0.45;−0.01)^*
Self−reported oral health
Excellent	0.31	1.85	ref	ref
Good	0.19	1.25	−0.12 (−0.34;0.10)	−0.13 (−0.35;0.09)
Fair	0.26	1.76	−0.06 (−0.28;0.16)	−0.07 (−0.29;0.16)
Poor	0.39	2.19	0.08 (−0.18;0.33)	0.01 (−0.25;0.27)
Very Poor	0.35	1.41	0.03 (−0.28;0.34)	−0.14 (−0.49;0.20)
Number of teeth
0–14	0.77	2.75	0.53 (0.12;0.93)^*	0.44 (0.05;0.82)^*
15–19	0.58	2.61	0.33 (0.02;0.65)^*	0.25 (−0.06;0.56)
20–23	0.21	1.41	−0.03 (−0.15;0.09)	−0.03 (−0.15;0.09)
24–27	0.21	1.69	−0.04 (−0.17;0.10)	−0.06 (−0.19;0.08)
28–32	0.25	1.63	ref	ref
Gum bleeding
Always	0.50	2.13	0.26 (−0.07;0.60)	0.24 (−0.13;0.61)
Occasionally	0.32	1.72	0.08 (−0.03;0.19)	0.08 (−0.04;0.20)
None	0.23	1.75	ref	ref
Age (years)
20–29	0.16	0.84	ref	ref
30–39	0.26	1.69	0.10 (−0.02;0.23)	0.08 (−0.05;0.20)
40–49	0.22	1.25	0.07 (−0.04;0.17)	0.01 (−0.11;0.12)
50–59	0.32	1.93	0.17 (0.02;0.31)^*	0.06 (−0.10;0.21)
60–65	0.54	3.01	0.38 (0.09;0.67)^*	0.21 (−0.07;0.49)
Gender
Male	0.28	1.74	0.00 (−0.11;0.11)	−0.01 (−0.14;0.12)
Female	0.28	1.77	ref	ref
Education (graduation)
High school	0.26	1.60	−0.01 (−0.12;0.11)	−0.05 (−0.18;0.07)
Vocational school, Junior college	0.35	2.22	0.08 (−0.08;0.25)	0.07 (−0.09;0.24)
University, Master’s program, Doctoral program	0.26	1.61	ref	ref
Personal income
<¥2 million	0.38	1.68	0.20 (0.01;0.38)^*	0.18 (−0.06;0.42)
¥2–4 million	0.26	1.90	0.08 (−0.08;0.24)	0.10 (−0.09;0.29)
¥4–6 million	0.28	1.82	0.10 (−0.08;0.28)	0.12 (−0.07;0.32)
¥6–8 million	0.35	1.74	0.17 (−0.06;0.41)	0.18 (−0.06;0.42)
>¥8 million	0.18	0.95	ref	ref
Unknown	0.22	1.54	0.04 (−0.14;0.23)	0.09 (−0.11;0.30)
Chronic disease
None	0.18	1.25	ref	ref
Present	0.53	2.67	0.35 (0.18;0.52)^*	0.26 (0.12;0.41)^*
Industrial classification
Primary industry	0.54	3.01	ref	ref
Secondary Industry	0.30	1.76	−0.24 (−0.59;0.11)	−0.15 (−0.48;0.19)
Tertiary industry	0.24	1.53	−0.30 (−0.65;0.04)	−0.22 (−0.55;0.11)
Occupational classification
White-collar worker	0.23	1.42	ref	ref
Blue-collar worker	0.31	1.93	0.08 (−0.03;0.18)	0.05 (−0.06;0.15)
Work shifts
Day shift	0.26	1.68	ref	ref
Both day and night shifts	0.47	2.66	0.21 (−0.35;0.77)	0.17 (−0.37;0.72)
Night shift	0.25	1.76	−0.01 (−0.18;0.16)	0.03 (−0.15;0.20)
Flexes, etc.	0.52	2.36	0.26 (−0.07;0.59)	0.21 (−0.12;0.53)

P < 0.05.

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