Table 4 Concentration indexes of unmet healthcare needs among middle-aged and older adults
| Â | Total | Urban | Rural |
|---|---|---|---|
Non-use of outpatient services | −0.019 | 0.060 | −0.062 |
 2008 | −0.068 | 0.045 | −0.053 |
 2013 | −0.026 | 0.057 | −0.075 |
 2018 | 0.001 | 0.053 | −0.058 |
Non-use of inpatient services | −0.159 | −0.034 | −0.199 |
 2008 | −0.219 | −0.308 | −0.243 |
 2013 | −0.153 | 0.043 | −0.273 |
 2018 | −0.149 | −0.045 | −0.193 |
Non-use of physical examinations | −0.114 | −0.065 | −0.091 |
 2008 | −0.130 | −0.104 | −0.075 |
 2013 | −0.033 | −0.058 | 0.015 |
 2018 | −0.060 | −0.030 | −0.028 |