Table 2.

Spearman correlation coefficients for activity path-based, activity location-based and residence-based measures of exposure to all alcohol outlets

		Residential Location Measures						Activity Location Measures					Activity Path-Based Measures
		1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
Residential Location Measures
1	Circular buffer (800m)	1.00
2	Census block group (count)	0.34	1.00
3	Census tract (count)	0.40	0.52	1.00
4	Census block group (count per square km)	0.48	0.92	0.46	1.00															0.9–1.0
5	Census tract (count per square km)	0.62	0.45	0.71	0.57	1.00														0.8–0.9
6	Inverse distance weighted sum of 7 nearest outlets (Euclidean km)	0.86	0.32	0.34	0.48	0.61	1.00													0.7–0.8
Activity Location Measures																				0.6–0.7
7	Circular buffer (800m)	0.21	0.17	0.23	0.10	0.10	0.15	1.00												0.5–0.6
8	Convex hull	0.06	−0.04	0.02	−0.09	−0.05	0.00	0.60	1.00											0.4–0.5
9	Standard deviation ellipse	0.11	−0.03	0.08	−0.07	0.00	0.05	0.57	0.93	1.00										0.3–0.4
10	Standard deviation ellipse (time-weighted)	0.29	0.14	0.24	0.12	0.19	0.29	0.44	0.66	0.67	1.00									0.2–0.3
11	Roadway network distance (100m buffer)	−0.01	−0.10	−0.07	−0.12	−0.01	0.02	0.31	0.39	0.35	0.30	1.00								0.1–0.2
Activity Path-Based Measures																				0–0.1
12	Buffer around activity path line (100m buffer)	−0.01	0.06	−0.02	0.04	0.05	0.04	0.18	0.20	0.16	0.20	0.57	1.00							< 0.0
13	Outlets per hour (100m buffer)	0.21	0.18	0.24	0.16	0.21	0.32	0.45	0.27	0.28	0.41	0.50	0.59	1.00
14	Per hour – excluding home (100m buffer)	0.28	0.19	0.26	0.20	0.25	0.35	0.45	0.23	0.27	0.31	0.38	0.43	0.84	1.00
15	% Time exposed to any outlet (100m buffer)	0.24	0.19	0.21	0.19	0.23	0.34	0.38	0.30	0.33	0.46	0.49	0.56	0.91	0.77	1.00
16	Per hour – two-week data (100m buffer)	0.19	0.12	0.25	0.11	0.19	0.30	0.45	0.26	0.28	0.38	0.46	0.47	0.91	0.78	0.83	1.00
17	Per hour – one-week data (100m buffer)	0.25	0.12	0.32	0.12	0.29	0.36	0.43	0.20	0.22	0.34	0.41	0.41	0.81	0.69	0.74	0.86	1.00
18	Per hour – one-day data (100m buffer)	0.28	0.12	0.23	0.14	0.26	0.33	0.20	0.13	0.16	0.28	0.29	0.32	0.57	0.53	0.57	0.53	0.59	1.00