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Table 2 Association of sociodemographic factors with periodontal treatments in univariate and multivariate analyses

From: National dental policies and socio-demographic factors affecting changes in the incidence of periodontal treatments in Korean: A nationwide population-based retrospective cohort study from 2002–2013

 

Univariate analysis

Multivariate analysis

OR

 

95 % CI

P

ORa

 

95 % CI

P

Sex

 Male

1.00

ref

  

1.00

ref

  

 Female

1.05

 

1.04–1.05

<0.001

1.00

 

1.00–1.01

0.513

Age group (years)

  ≤ 9

1.00

ref

  

1.00

ref

  

 10–19

3.35

 

3.27–3.43

<0.001

3.50

 

3.41–3.58

<0.001

 20–29

5.10

 

4.98–5.21

<0.001

5.19

 

5.07–5.32

<0.001

 30–39

8.10

 

7.92–8.28

<0.001

7.72

 

7.55–7.90

<0.001

 40–49

11.02

 

10.77–11.26

<0.001

9.58

 

9.36–9.81

<0.001

 50–59

10.61

 

10.36–10.86

<0.001

8.39

 

8.18–8.60

<0.001

 60–69

6.05

 

5.90–6.20

<0.001

4.67

 

4.54–4.80

<0.001

  ≥ 70

1.17

 

1.72–1.84

<0.001

1.64

 

1.58–1.70

<0.001

Household income

 First quintile

1.00

ref

  

1.00

ref

  

 Second quintile

1.11

 

1.09–1.13

<0.001

1.02

 

1.00–1.04

0.029

 Third quintile

1.15

 

1.14–1.17

<0.001

1.10

 

1.08–1.12

<0.001

 Fourth quintile

1.22

 

1.20–1.23

<0.001

1.18

 

1.16–1.20

<0.001

 Fifth quintile

1.49

 

1.47–1.51

<0.001

1.37

 

1.35–1.39

<0.001

Insurance status

 MAP

1.00

ref

  

1.00

ref

  

 NHIS, employees

2.66

 

2.58–2.74

<0.001

1.93

 

1.86–2.00

<0.001

 NHIS, self-employed

2.42

 

2.34–2.50

<0.001

1.65

 

1.59–1.71

<0.001

Health status

 Healthy

1.00

ref

  

1.00

ref

  

 Major disability

0.54

 

0.51–0.56

<0.001

0.61

 

0.58–0.64

<0.001

 Minor disability

1.14

 

1.10–1.17

<0.001

0.94

 

0.91–0.97

<0.001

Living area

 Urban

1.00

ref

  

1.00

ref

  

 Rural

0.77

 

0.76–0.78

<0.001

0.85

 

0.83–0.86

<0.001

  1. OR Odds ratio, NHIS National health insurance service, MAP Medical aid program
  2. aOR, calculated by multivariate