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Table 5 Difference-in-difference analyses

From: Which indicator should be used? A comparison between the incidence and intensity of catastrophic health expenditure: using difference-in-difference analysis

 

Intensity of CHE

Coef. (95% C.I.)

Incidence of CHE

O.R. (95% C.I.)

Crude

Full

Crude

Full

Year (ref = 2013)

 2015

0.034* (0.007, 0.062)

0.025 (−0.001, 0.051)

1.342 (0.909, 1.982)

1.193 (0.784, 1.814)

Treatment (ref = Control group)

 Treatment group

0.069*** (0.046, 0.091)

0.064*** (0.043, 0.086)

3.233*** (2.364, 4.422)

3.699*** (2.629, 5.205)

 Year * Treatment

−0.034* (− 0.065, − 0.002)

− 0.033* (− 0.062, − 0.003)

0.742 (0.485, 1.136)

0.722 (0.456, 1.145)

Gender (ref = Male)

 Female

 

−0.004 (− 0.028, 0.019)

 

0.898 (0.641, 1.258)

Elderly (ref = No)

 Yes

 

0.016 (−0.000, 0.032)

 

1.466** (1.169, 1.838)

Education level (ref = Middle school or less)

 High school or more

 

−0.003 (− 0.018, 0.011)

 

0.873 (0.716, 1.065)

Presence of a spouse (ref = No)

 Yes

 

0.022 (−0.003, 0.046)

 

1.669** (1.161, 2.399)

Economically active (ref = No)

 Yes

 

−0.022** (− 0.037, − 0.007)

 

0.797 (0.653, 0.973)

Living alone (ref = No)

 Yes

 

0.019 (−0.005, 0.043)

 

1.585*(1.115, 2.252)

Equivalized income (ref = 1st quintile)

 2nd quintile

 

−0.091*** (− 0.109, − 0.072)

 

0.373*** (0.297, 0.468)

 3rd quintile

 

−0.124*** (− 0.146, − 0.103)

 

0.214*** (0.161, 0.283)

 4th quintile

 

−0.146*** (− 0.170, − 0.122)

 

0.092*** (0.063, 0.133)

 5th quintile

 

−0.163*** (− 0.189, − 0.138)

 

0.037*** (0.022, 0.064)

Private health insurance (ref = No)

 Yes

 

0.005 (−0.010, 0.021)

 

1.115 (0.909, 1.367)

National health insurance (ref = No)

 Yes

 

−0.101***(− 0.125, − 0.076)

 

0.186*** (0.132, 0.262)

Presence of disabled persons (ref = No)

 Yes

 

0.012 (−0.005, 0.029)

 

1.147 (0.917, 1.436)

  1. Coef represents the coefficient of each variable, and O.R. represents the odds ratio of each variable
  2. * p < .05 ** p < .01 *** p < .001