Table 3 Estimation results of logistic models to explain the probability of having a Kakaritsuke-I

Self-related health

 Good

1

1

 Somewhat good

1.14

(1.06, 1.24)

1.13

(0.99, 1.29)

 Average

1.07

(1.01, 1.12)

1.14

(1.04, 1.24)

 Somewhat poor

1.21

(1.15, 1.27)

1.16

(1.08, 1.25)

 Poor

1.19

(1.11, 1.27)

1.15

(1.05, 1.26)

Sex

 Male

1

1

 Female

1.26

(1.11, 1.42)

1.07

(0.89, 1.30)

Age

 29 years or below

1

1

 30–39 years

0.90

(0.74, 1.09)

0.90

(0.67, 1.23)

 40–49 years

1.23

(1.01, 1.50)

1.08

(0.80, 1.48)

 50–59 years

1.70

(1.37, 2.12)

1.65

(1.17, 2.33)

 60 years or above

3.90

(3.13, 4.85)

3.24

(2.30, 4.55)

Educational attainment

 Junior high school

1

1

 High school

1.22

(0.84, 1.78)

1.13

(0.62, 2.08)

 Junior college

1.36

(0.90, 2.04)

1.21

(0.63, 2.33)

 College or above

1.15

(0.79, 1.67)

1.12

(0.61, 2.05)

Job status

 Regular employee

1

1

 Non-regular employee

1.05

(0.89, 1.25)

0.86

(0.66, 1.12)

 Self-employment worker

1.23

(0.96, 1.58)

1.38

(0.91, 2.10)

 Unemployed

1.05

(0.86, 1.28)

1.05

(0.77, 1.42)

 Out of labor force

1.12

(0.79, 1.58)

1.16

(0.67, 2.02)

 Student

1.53

(1.19, 1.95)

0.96

(0.65, 1.42)

Household income

 Low

 Moderate

1.24

(1.07, 1.45)

1.19

(0.94, 1.51)

 High

1.48

(1.24, 1.78)

1.22

(0.92, 1.62)

Marital status

 Unmarried

1

1

 Married

1.01

(0.87, 1.18)

0.99

(0.78, 1.25)

Family

 Living with family members

1

1

 Living alone

0.63

(0.53, 0.75)

0.59

(0.45, 0.77)

Number of doctors per population at the prefecture level

 Low

1

1

 Moderate

0.93

(0.81, 1.08)

0.92

(0.74, 1.15)

 High

0.99

(0.86, 1.14)

1.10

(0.88, 1.37)

N

5,234

2,529