The effects of local street network characteristics on the positional accuracy of automated geocoding for geographic health studies

Table 1 Descriptive statistics for positional error magnitudes and directional displacement magnitudes of automated geocodes of Carroll County addresses.

Addresses	Sample size	Minimum	Median	Maximum	Mean	Standard deviation
All	6376	1	59	2896	127	219
Rural PEM	1421	3	168	2896	333	379
Rural \|Δx\|, N-S	760	0	69	763	102	111
Rural \|Δy\|, N-S	760	0	120	2892	318	420
Rural \|Δx\|, E-W	661	0	59	1870	247	352
Rural \|Δy\|, E-W	661	0	55	770	90	101
Municipal PEM	4955	1	53	839	68	71
Municipal \|Δx\|, N-S	1812	0	24	354	26	28
Municipal \|Δy\|, N-S	1812	0	42	839	55	62
Municipal \|Δx\|, E-W	1735	0	43	700	63	88
Municipal \|Δy\|, E-W	1735	0	22	632	25	26

ISSN: 1476-072X