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Table 3 Factors contributing to out-of-pocket (OOP) medical expenditure and prescription drug expenditure in elderly

From: Living arrangements, chronic diseases, and prescription drug expenditures among Korean elderly: vulnerability to potential medication underuse

 

OOP medical expenditure cost ratio (95% confidence interval)

OOP prescription drug expenditure cost ratio (95% confidence interval)

Model 1

Model 2

Model 3

Model 1

Model 2

Model 3

Living arrangement

  Living with adult aged 20-64

1.00

1.00

1.00

1.00

1.00

1.00

  Living only with spouse

0.86

0.82

1.05

0.97

0.94

1.10

(0.72-1.04)

(0.66-1.01)

(0.84-1.32)

(0.87-1.08)

(0.82-1.07)

(0.96-1.26)

  Living alone

0.76

0.65

0.85

0.96

0.80

0.98

(0.58-0.98)*

(0.48-0.89)*

(0.62-1.16)

(0.83-1.13)

(0.67-0.97)*

(0.81-1.18)

Age

  65-74

1.00

1.00

1.00

1.00

1.00

1.00

  75+

1.05

1.08

1.05

1.10

1.16

1.11

(0.87-1.27)

(0.87-1.35)

(0.85-1.31)

(0.98-1.24)

(1.02-1.33)*

(0.97-1.27)

Gender

  Women

1.00

1.00

1.00

1.00

1.00

1.00

  Men

1.06

1.26

1.28

0.99

1.41

1.42

(0.89-1.26)

(1.03-1.55)*

(1.03-1.60)*

(0.89-1.10)

(1.24-1.61)*

(1.24-1.63)*

No. of major chronic diseases

  0

 

1.00

1.00

 

1.00

1.00

  1

 

1.63

1.67

 

2.11

2.17

 

(1.27-2.09)*

(1.32-2.12)*

 

(1.81-2.46)*

(1.88-2.52)*

  2+

 

2.31

2.39

 

4.18

4.33

 

(1.81-2.96)*

(1.89-3.03)*

 

(3.58-4.87)*

(3.73-5.03)*

Education

  Elementary school or less

  

1.00

  

1.00

  Middle school

  

0.82

  

1.06

(0.61-1.09)

(0.88-1.26)

  High school or more

  

1.04

  

1.12

(0.80- 1.35)

(0.95-1.31)

Employment

  Not employed

  

1.00

  

1.00

  Employed

  

0.76

  

0.68

(0.62-0.93)*

(0.60-0.77)*

Household equivalent income

  High

  

1.00

  

1.00

  Middle high

  

0.77

  

1.00

(0.59-1.00)

(0.85-1.18)

  Middle low

  

0.71

  

0.84

(0.53-0.95)*

(0.70-1.00)

  Low

  

0.54

  

0.71

   

(0.40-0.72)*

  

(0.59-0.85)*

  1. High (≥ US$13,166); Middle high (US$7,760 to <13,166); Middle low (US$4,690 to <7,760); Low (<US$4,690) *P-value < 0.05.