Table 2

Two-sided 95% confidence limits for mean positional error magnitude, and 95% tolerance bound for the lower 95% of positional error magnitudes, at the 10th, 50th, and 90th percentiles of the statistically most important covariate (street length for municipal addresses and street intersection density for rural addresses).

Rurality

Covariate

p

100pth percentile

Confidence limits

Tolerance bound

Municipal

Length

0.10

93.7

(41.87,42.88)

111.26

0.50

127.8

(44.73,45.75)

118.56

0.90

295.4

(60.98,63.04)

163.17

Rural

Density

0.10

0.64

(180.49,210.00)

1436

0.50

1.59

(176.08,203.71)

1395

0.90

7.00

(150.07,174.84)

1195

Units of these limits and bounds are meters.

Zimmerman and Li International Journal of Health Geographics 2010 9:10   doi:10.1186/1476-072X-9-10