Table 1 Classification of the coupling coordination degree (D-value) between population aging and economic growth
D-value | Coupling Level | Coordination Status |
|---|---|---|
[0.8 ~ 1.0] | High coupling | Good coordination |
[0.6  ~  0.8) | Moderate coupling | Coordination |
[0.4  ~  0.6) | Low coupling | Basic coordination |
[0.2  ~  0.4) | Moderate uncoupling | Imbalance |
[0  ~  0.2) | Severe uncoupling | Serious imbalance |