Table 2.

Region-level geographical distribution of patients (N=18,473) and average number of visits (N=39,239; overall mean: 2.12 visits per person).

Regions of China	Visits, n (%)	Patients, n (%)	Visits per person, mean
South China	37,163 (94.71)	17,376 (94.06)	2.14
East China	840 (2.14)	437 (2.37)	1.92
Central China	795 (2.02)	426 (2.31)	1.87
Southwest China	260 (0.66)	128 (0.69)	2.03
North China	96 (0.24)	55 (0.3)	1.75
Northwest China	47 (0.12)	26 (0.13)	1.81
Northeast China	38 (0.1)	25 (0.13)	1.52

^aIf 2 patients had the same district and ID information, they were considered the same person.