TABLE 4.
Aged 11–15 Years in 2004 | Aged 12–16 Years in 2005 | Aged 13–17 Years in 2006 | |
Outcome expectations scale, mean (95% CI) | 0.12* (0.07, 0.17) | 0.16* (0.10, 0.22) | 0.13* (0.04, 0.23) |
Self-efficacy scale, mean (95% CI) | 0.10* (0.06, 0.15) | 0.10* (0.05, 0.14) | 0.03 (−0.05, 0.11) |
Social influences scale, mean (95% CI) | 0.10* (0.1, 0.1) | 0.11* (0.06, 0.17) | 0.04 (−0.05, 0.13) |
No. weekly sessions of free-time physical activity, median (95% CI) | 0.09* (0.0, 0.1) | 0.06* (0.00, 0.12) | 0.16* (0.07, 0.24) |
Organized physical activity,a % (95% CI) | 0.02 (−0.05, 0.09) | 0.03 (−0.1, 0.1) | 0.09 (−0.0, 0.2) |
Previous day physical activity,b % (95% CI) | 0.19* (0.1, 0.3) | 0.12* (0.0, 0.2) | 0.15 (−0.0, 0.3) |
Note. CI = confidence interval. The year 2003 was excluded because the exposure measure was different than that used in 2004 to 2006.
Percentage who engaged in any organized physical activity in the 7 days before the interview.
Percentage who engaged in any physical activity on the day before the interview.
*P < .05, for trends tested with γ statistic.