TABLE 3.
Associations Between Reported Frequency of Exposure to the VERB Campaign and Physical Activity Outcomes Among Adolescents Aged 13 to 17 Years (Cohort 1): 2006
| No Campaign Exposure | Exposed Less Than Once per Week | Exposed About Once per Week, (95% CI) | Exposed Several Times per Week, (95% CI) | Exposed Every Day, (95% CI) | γ Statistic | |
| Outcome expectations scale, mean (95% CI) | 9.90 (9.77, 10.02) | 9.86 (9.77, 9.95) | 10.09 (9.90, 10.27) | 10.03 (9.85, 10.21) | 10.28 (10.05, 10.52) | 0.13* (0.04, 0.23) |
| Self-efficacy scale, mean (95% CI) | 9.96 (9.84, 10.08) | 9.98 (9.88, 10.07) | 10.04 (9.84, 10.25) | 10.05 (9.89, 10.21) | 10.04 (9.77, 10.31) | 0.04 (−0.05, 0.13) |
| Social influences scale, mean (95% CI) | 9.81 (9.66, 9.97) | 9.81 (9.72, 9.91) | 9.89 (9.74, 10.04) | 9.92 (9.78, 10.05) | 9.88 (9.59, 10.17) | 0.03 (−0.05, 0.11) |
| No. weekly sessions of free-time physical activity, median (95% CI) | 2.02 (1.48, 2.61) | 2.95 (2.34, 3.61) | 3.30 (2.37, 4.11) | 3.27 (2.24, 4.69) | 4.90 (2.81, 6.78) | 0.16* (0.07, 0.24) |
| Organized physical activity,a % (95% CI) | 25.3 (20.7, 29.9) | 34.6 (30.3, 38.9) | 41.3 (34.1, 48.5) | 38.9 (27.9, 50.0) | 33.3 (21.6, 45.0) | 0.09 (−0.03, 0.21) |
| Previous day physical activity,b % (95% CI) | 47.6 (41.8, 53.5) | 59.4 (54.2, 64.6) | 62.0 (55.8, 68.1) | 56.4 (49.3, 63.4) | 67.8 (47.8, 87.8) | 0.15 (−0.03, 0.33) |
Note. CI = confidence interval.
a
Percentage who engaged in any organized physical activity in the 7 days before the interview.
b
Percentage who engaged in any physical activity on the day before the interview.
*P < .05, for trends tested with γ statistic.