Table 4.

Percentage of area and population covered within the eight types of under-served areas in terms of travel time on Hainan Island (2018)

Type	Multilevel healthcare access zones	Area %	Population %
A	Effective service zone	48.52%	76.36%
B	Lack of Tier 1 healthcare facilities	1.02%	0.53%
C	Lack of Tier 2 healthcare facilities	13.33%	8.81%
D	Lack of Tier 3 healthcare facilities	5.16%	2.80%
E	Lack of Tier 2 and Tier 1 healthcare facilities	8.61%	3.86%
F	Lack of Tier 3 and Tier 1 healthcare facilities	0.67%	0.30%
G	Lack of Tier 3 and Tier 2 healthcare facilities	4.43%	2.11%
H	Lack of all tiers of healthcare facilities	18.27%	5.22%

Note: Tier 1 healthcare institutions are clinics in urban areas and village clinics in rural areas. Tier 2 healthcare institutions are CHCs in urban areas and THCs in rural areas. Tier 3 healthcare institutions are hospitals