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Table 4 Income difference in occurring high medical expenditure

From: The effect of high medical expenses on household income in South Korea: a longitudinal study using propensity score matching

  

Unit: USD

Variables

Estimate§

Std. Error

p-value

≥ at twice the average medical expense (n = 1,956)

   

Year (reference: 2007)

   

  2008

556

44.6

0.1818

  2009

47

58.6

0.9315

  2010

672

49.8

0.1482

  2011

791

55.7

0.1283

Case (reference: non-occurrence household)

   

  Occurrence household

−1,435

67.6

0.0230

Interaction term (year x Case)

   

  2008

−1,353

51.5

0.0049

  2009

−888

67.5

0.1591

  2010

−770

57.3

0.1503

  2011

−434

64.0

0.4672

≥ at four times the average medical expense (n = 696)

   

Year (reference: 2007)

   

  2008

2,597

103.4

0.0073

  2009

2,605

130.7

0.0330

  2010

835

107.0

0.4029

  2011

1,212

113.6

0.2532

Case (reference: non-occurrence household)

   

  Occurrence household

−2,373

147.6

0.0453

Interaction term (year x Case)

   

  2008

−2,233

119.3

0.0453

  2009

−2,862

150.6

0.0420

  2010

−1,790

123.1

0.1195

  2011

−1,342

130.5

0.2710

≥ at five times the average medical expense (n = 500)

   

Year (reference: 2007)

   

  2008

2,204

82.9

0.0046

  2009

2,340

103.4

0.0157

  2010

1,476

107.0

0.1403

  2011

1,098

120.8

0.3306

Case (reference: non-occurrence household)

   

  Occurrence household

−2,553

137.0

0.0464

Interaction term (year x Case)

   

  2008

−2,147

95.7

0.0167

  2009

−2,385

119.0

0.0323

  2010

−2,749

123.0

0.0170

  2011

−1,840

138.7

0.1556

  1. § Adjusted odds ratio from multiple regression analysis with all of the variables in Table 1