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Table 3 Access to primary care opportunities for the five activity space measures. Spearman's rank correlation. SDE1 = standard deviational ellipse at 1 standard deviation; SDE2 = standard deviational ellipse at 2 standard deviations; RNB = road network buffer; STT = standard travel time polygon; RTT = relative travel time polygon.

From: A suite of methods for representing activity space in a healthcare accessibility study

 

Measure of activity space

 

SDE1

SDE2

RNB

STT

RTT

 

Mean (S.D.)

Median (Range)

Mean (S.D.)

Median (Range)

Mean (S.D.)

Median (Range)

Mean (S.D.)

Median (Range)

Mean (S.D.)

Median (Range)

Number of primary care opportunities

6.04 (9.47)

3 (0–104)

13.71 (18.68)

8 (0–155)

13.06 (12.90)

9 (0–86)

39.59 (37.55)

21 (0–142)

39.33 (44.55)

20 (0–232)

Percent with at least one primary care opportunity

77.6

92.8

97.5

99.9

99.0

Correlation between area and number of primary care opportunities

0.426

0.506

0.441

0.787

0.790