CDCs	control disease centres
DSDM	Dynamic Spatial Durbin Model
FE	fixed effects
HDT	hierarchical diagnosis and treatment
LLHC	lower-level healthcare
LM	Lagrange multiplier
LR	likelihood ratio
MCHSs	maternal and child health stations
QML	quasi maximum likelihood
RE	random effects
SAR	spatial autoregressive regression model
SDM	spatial Durbin model
SDPs	specialised disease preventions
SEM	spatial error model
SLM	spatial lag model
TCM	traditional Chinese medicine
THCs	town health centres
UCHIs	urban community health institutions
ULHC	upper-level healthcare
VIF	variance inflation factors