. 2007 Feb;97(2):306–310. doi: 10.2105/AJPH.2005.080499

TABLE 2—

Adjusted Differences in z Scores (BMI-for-Age) and Relative Differences in Total Time Spent Outdoors at Age 10 and 12 Years: The Kidskin Study, Australia, 1995–2001

	10 Years (95% CI)	12 Years (95% CI)
Adjusted absolute difference, z score (BMI-for-age)^a	n = 1423	n = 1100
Control group	Reference	Reference
Moderate-intervention group	0.01 (−0.12, 0.14)	0.05 (−0.09, 0.20)
High-intervention group	−0.08 (−0.22, 0.06)	−0.11 (−0.27, 0.05)
Adjusted relative difference, total time spent outdoors^b	n = 1177	n = 921
Control group	Reference	Reference
Moderate-intervention group	1.0 (0.87, 1.15)	0.94 (0.81, 1.09)
High-intervention group	0.90 (0.78, 1.05)	0.98 (0.83, 1.15)

Note. BMI = body mass index; CI = confidence interval. The number of children available for analysis in Tables 1 ▶ and 2 differs because of missing data in the confounders.

^aAdjusted for gender, ethnicity, parental educational level, and z score at baseline.

^bAdjusted for gender, ethnicity, parental educational level, tendency to sunburn, and total time spent outdoors at baseline. was addressed by the objectives and design of the intervention.