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Table 6 Factors associated with risks of developing subtypes of cataracts - Final model (N = 11,591)

From: Cataract subtype risk factors identified from the Korea National Health and Nutrition Examination survey 2008–2010

 

Pure Cortical type n = 7008

Pure Nuclear type

Pure PSCO type

Mixed type

Multivariate OR

p value

Multivariate OR

p value

Multivariate OR

p value

Multivariate OR

p value

1. Socio-demographic factors

Age (years)

        

  40–49

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

  50–59

2.8

<0.01

4.1

<0.01

3.2

0.07

4.1

<0.01

  60–69

9.0

<0.01

15.7

<0.01

6.9

<0.01

22.6

<0.01

  70–80

26.4

<0.01

44.8

<0.01

24.1

<0.01

104.3

<0.01

  80+

59.6

<0.01

138.2

<0.01

135.9

<0.01

414.0

<0.01

Sex

        

  Men

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

  Women

0.9

0.07

1.0

0.87

1.0

0.92

1.1

0.50

Monthly household income

  Lowest quintile

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

  2nd to 4th quintile

0.7

<0.01

1.0

0.97

0.5

0.07

0.8

0.02

  Highest quintile

0.7

<0.01

1.0

0.78

0.4

0.12

0.6

<0.01

Education

        

  Elementary school

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

  Middle school

0.8

0.11

0.8

0.02

0.7

0.52

0.8

0.11

  High school

0.6

<0.01

0.8

0.02

1.0

0.93

0.6

<0.01

  Univ. or higher

0.5

<0.01

0.6

<0.01

0.9

0.93

0.9

0.56

2. Health examination variable

Hypercholesterolemia

       

  No

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

  Yes

1.3

0.02

1.0

0.61

1.6

0.28

1.1

0.26

Anemia

        

  No

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

  Yes

0.9

0.70

1.1

0.29

1.0

0.96

1.3

0.12

Metabolic syndrome

  No

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

  Yes

0.9

0.23

1.2

0.02

0.6

0.17

1.2

0.13

3. Comorbidities

Hypertension

        

  No

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

  Yes

1.2

0.14

1.0

0.88

1.1

0.86

1.2

0.16

Diabetic mellitus

        

  No

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

1.0 (ref)

 

  Yes

1.3

0.05

1.4

<0.01

2.7

0.04

1.4

0.02