Table 7.

Evidence for test-retest reliability using 4 weeks of surveys (n=232)

	Q1. Usual frequency of park visits	Q2. Usual duration of park visits	Q3. Park activities
	ICC (95% CI)	ICC (95% CI)	Overall Kappa* (95% CI)
Overall	0.88 (0.86, 0.91)	0.82 (0.78, 0.85)	0.59 (0.54, 0.64)
Stratified analysis:
Gender
Male	0.86 (0.82, 0.89)	0.81 (0.76, 0.85)	0.63 (0.57, 0.70)
Female	0.86 (0.82, 0.89)	0.81 (0.76, 0.85)	0.47 (0.40, 0.54)
Age
18–35	0.89 (0.86, 0.92)	0.82 (0.77, 0.86)	0.56 (0.49, 0.64)
36–59	0.89 (0.85, 0.92)	0.87 (0.82, 0.91)	0.57 (0.49, 0.66)
>=60	0.86 (0.79, 0.92)	0.73 (0.62, 0.83)	0.64 (0.53, 0.74)
Race/Ethnicity
non-Hispanic White	0.88 (0.85, 0.91)	0.89 (0.86, 0.92)	0.77 (0.71, 0.84)
non-Hispanic Black	0.84 (0.78, 0.90)	0.59 (0.47, 0.71)	0.34 (0.25, 0.43)
Hispanic or Other	0.95 (0.93, 0.97)	0.87 (0.82, 0.92)	0.53 (0.43, 0.63)
Education
College or more	0.90 (0.87, 0.92)	0.86 (0.82, 0.89)	0.71 (0.65, 0.78)
Some college or vocational	0.86 (0.79, 0.91)	0.83 (0.76, 0.89)	0.62 (0.52, 0.72)
Less than high school, high school, or GED	0.86 (0.80, 0.91)	0.72 (0.61, 0.81)	0.28 (0.18, 0.38)
Body mass index
Under or normal weight	0.86 (0.82, 0.90)	0.86 (0.82, 0.90)	0.69 (0.61, 0.78)
Overweight	0.92 (0.88, 0.94)	0.88 (0.84, 0.92)	0.65 (0.57, 0.73)
Obese	0.87 (0.82, 0.91)	0.70 (0.60, 0.78)	0.45 (0.36, 0.54)
Participant Recruitment
Household interview	0.89 (0.84, 0.93)	0.89 (0.84, 0.93)	0.54 (0.49, 0.59)
Park user	0.87 (0.84, 0.89)	0.77 (0.73, 0.82)	0.70 (0.59, 0.81)
State
CA	0.95 (0.92, 0.97)	0.86 (0.80, 0.91)	0.64 (0.53, 0.76)
NC	0.94 (0.91, 0.96)	0.88 (0.82, 0.92)	0.78 (0.66, 0.89)
NM	0.92 (0.88, 0.95)	0.91 (0.86, 0.94)	0.76 (0.66, 0.85)
OH	0.80 (0.71, 0.87)	0.75 (0.64, 0.83)	0.59 (0.48, 0.70)
PA	0.80 (0.70, 0.87)	0.71 (0.59, 0.82)	0.26 (0.15, 0.38)

ICC= intraclass correlation coefficient; CI=confidence interval

^*Overall kappa is a simple kappa that accounts for the four repeat survey administrations within person.