Table 1 The classification of the P-PS CD.

From: Equilibrium in adversity: balancing public service supply and demand during population decline

P-PS CD

Coupling Level

P-PS CD

Coupling Level

0 ≤ C ≤ 0.3

Primary Coupling

0.5 < C ≤ 0.8

Grinding Coupling

0.3 < C ≤ 0.5

Antagonistic Coupling

0.8 < C ≤ 1

High Coupling