Fig. 4

Thai Index of basic medical and health services in four regions of China (2012–2019). T, Total Thiel index; T^w-Northeast, Intra-regional Thai index about northeastern region; Tw-East, Intra-regional Thai index about eastern region; T^w-Central, Intra-regional Thai index about central region; T^w-West, Intra-regional Thai index about western region; T^w, Intra-regional Thai index; T^B, Inter-regional Thai index