Table 8.
Decomposition analysis of concentration index of catastrophic health care expenditure in 2009 and 2012
| Coefficient | Mean | Elasticity | Concentration index (CI) | Contribution to CI | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 2009 | 2012 | 2009 | 2012 | 2009 | 2012 | 2009 | 2012 | 2009 | 2012 | |
| Economic status (reference group = Quintile1) | ||||||||||
| Quintile2 | −0.089 | −0.068 | 0.198 | 0.194 | −0.066 | −0.049 | −0.392 | −0.402 | 0.026 | 0.020 |
| Quintile3 | −0.094 | −0.162 | 0.198 | 0.204 | −0.070 | −0.123 | 0.008 | 0.000 | −0.001 | 0.000 |
| Quintile4 | −0.103 | −0.165 | 0.198 | 0.194 | −0.077 | −0.12 | 0.408 | 0.402 | −0.031 | −0.048 |
| Quintile5 | −0.071 | −0.119 | 0.198 | 0.204 | −0.053 | −0.090 | 0.808 | 0.804 | −0.043 | −0.073 |
| Household member ≥ 65 | 0.274* | −0.009 | 0.359 | 0.370 | 0.368 | −0.012 | −0.067 | −0.037 | −0.025 | 0.000 |
| Household member ≤ 5 | 0.172 | 0.010 | 0.244 | 0.222 | 0.157 | 0.008 | −0.259 | −0.192 | −0.041 | −0.002 |
| Household head | ||||||||||
| Sex (male) | −0.040 | −0.107 | 0.947 | 0.935 | −0.141 | −0.373 | −0.026 | −0.025 | 0.004 | 0.009 |
| Education level (reference group = below primary school level) | ||||||||||
| Junior middle school | 0.152 | −0.031 | 0.382 | 0.352 | 0.217 | −0.040 | −0.042 | 0.025 | −0.009 | −0.001 |
| Senior middle school and above | −0.049 | −0.059 | 0.076 | 0.074 | −0.014 | −0.016 | 0.398 | −0.112 | −0.006 | 0.002 |
| Occupation (farmer) | −0.148 | 0.033 | 0.863 | 0.926 | −0.478 | 0.115 | 0.006 | 0.001 | −0.003 | 0.000 |
| Household size (reference group = 1–3 members) | ||||||||||
| ≥ 4 members | −0.348** | −0.145 | 0.580 | 0.676 | −0.756 | −0.366 | −0.115 | −0.092 | 0.087 | 0.034 |
| Real reimbursement | −0.067 | −0.857** | 0.179 | 0.331 | −0.045 | −1.055 | −0.025 | −0.028 | 0.001 | 0.030 |
| Length of stay (reference group = fewer than 8 days) | ||||||||||
| 8–14 days | −0.003 | −0.050 | 0.267 | 0.287 | −0.003 | −0.053 | 0.070 | −0.238 | 0.000 | 0.013 |
| ≥ 15 days | 0.471** | 0.221* | 0.328 | 0.398 | 0.579 | 0.328 | 0.146 | 0.257 | 0.085 | 0.084 |
| Inpatient institution (reference group = town level) | ||||||||||
| County level | 0.080 | 0.111 | 0.519 | 0.537 | 0.155 | 0.222 | 0.038 | 0.038 | 0.006 | 0.008 |
| County above | 0.487** | 0.365 | 0.183 | 0.213 | 0.334 | 0.290 | 0.038 | 0.183 | 0.013 | 0.053 |
| Self-assessed health (reference group = worse) | ||||||||||
| Normal | −0.047 | −0.035 | 0.305 | 0.324 | −0.053 | −0.042 | −0.178 | −0.040 | 0.009 | 0.002 |
| Better | −0.089 | −0.062 | 0.305 | 0.380 | −0.102 | −0.088 | 0.156 | −0.089 | −0.016 | 0.008 |
*Statistically significant (P <0.05), **Highly statistically significant (P <0.01)