Table 2 Concentration index and horizontal inequity in inpatient care utilization and unmet inpatient care need
Outcome variables | Concentration index | Horizontal inequity | ||
|---|---|---|---|---|
Index value (Robust SE) | P | Index value (Robust SE) | P | |
Inpatient care utilization | Â | Â | Â | Â |
 2013 | 0.18 (0.02) | 0.001 | 0.19 (0.02) | < 0.001 |
 2018 | 0.04 (0.02) | 0.053 | 0.07 (0.02) | < 0.001 |
 Differences between 2013 and 2018 | -0.14 (0.03) | < 0.001 | -0.12 (0.03) | < 0.001 |
Unmet inpatient care need | Â | Â | Â | |
 2013 | -0.09 (0.07) | 0.164 | -0.07 (0.07) | 0.282 |
 2018 | -0.07 (0.05) | 0.188 | -0.05 (0.05) | 0.309 |
 Differences between 2013 and 2018 | 0.02 (0.08) | 0.764 | 0.02 (0.08) | 0.815 |