Gravity models for potential spatial healthcare access measurement: a systematic methodological review

Table 3 Application frequency of 2SFCA-type methodological developments

Methodological development	N of 2SFCA-type measures applied this methodological development	% of 2SFCA-type measures applied this methodological development
2SFCA-type measures applied (Total)	324	100
Initial 2SFCA (No methodological development)	82	25
Distance decay within catchment area	229	71
Variable catchment area sizes	52	16
Outcome unit modification	16	5
Provider competition	40	12
Local and global distance decay	13	4
Subgroup-specific access	2	1
Multiple transportation modes	13	4
Time-dependent access	8	2

For all 324 2SFCA-type measures, the methodological development(s) applied were identified. One 2SFCA-type measure can implement more than one methodological development (= not mutually exclusive). Therefore, the sum of 2SFCA-type methodological developments applied exceeds the number of measures classified as 2SFCA-type
2SFCA two-step floating catchment area

ISSN: 1476-072X