Table 5.

Evidence for validity comparing the survey to the GPS

	Q1. Usual frequency of park visits*		Q2. Usual duration of park visits**		Q4. Past week number of visits to the park		Q5. Past week length of park visit **
	n	SCC (95% CI)	n	SCC (95% CI)	n	SCC (95% CI)	n	SCC (95% CI)
Week 1	214	0.50 (0.39, 0.61)	214	0.52 (0.42, 0.63)	205	0.62 (0.51, 0.73)	209	0.64 (0.55, 0.74)
Week 2	220	0.45 (0.33, 0.56)	220	0.53 (0.42, 0.63)	213	0.63 (0.53, 0.74)	216	0.67 (0.58, 0.76)
Week 3	225	0.40 (0.28, 0.52)	225	0.50 (0.39, 0.61)	213	0.65 (0.54, 0.75)	221	0.62 (0.53, 0.72)

CI=confidence interval; SCC=Spearman correlation coefficients

^*The categories used to assess Q1 were: daily, a few times/week; once/week; a couple times/week; monthly; rarely/first time/never

^**The categories used to assess Q2 and Q5 were: 0; <15 min; 15–30 min; 31–60 min; >1 but <2 hours; 2–3 hours; >3 but <5 hours; >=5 hours

Question items correspond to the question numbers in Appendix 1.

Q1 and Q2 were compared to GPS findings averaged over the 3-week period.

Q4 and Q5 were compared to the GPS from the specific week under study.