optimistic. Therefore, our ARs have to be
interpreted as the upper bounds of the
effects of preventive measures. To be
more realistic, we have performed
a sensitivity analysis assuming adherence
rates of 30% only, for example, 30%
instead of 100% of highly inactive children
reduce media time to,1 hour per
day. This calculation has only been performed
for univariate ARs, because taking
into account multiadjustments would
lead to overly complex assumptions
concerning the interactions between
different exposures. In that univariate
analysis, AR of media time was 20.6%
but, assuming a 30% acceptance of the
desired behavior change, it was reduced
to 9.7% only. This corresponds to a decrease
in 1.3 percentage points in the
prevalence of overweight. Thus, at population
level, effects of isolated measures
seem to be low.
optimistic. Therefore, our ARs have to be
interpreted as the upper bounds of the
effects of preventive measures. To be
more realistic, we have performed
a sensitivity analysis assuming adherence
rates of 30% only, for example, 30%
instead of 100% of highly inactive children
reduce media time to,1 hour per
day. This calculation has only been performed
for univariate ARs, because taking
into account multiadjustments would
lead to overly complex assumptions
concerning the interactions between
different exposures. In that univariate
analysis, AR of media time was 20.6%
but, assuming a 30% acceptance of the
desired behavior change, it was reduced
to 9.7% only. This corresponds to a decrease
in 1.3 percentage points in the
prevalence of overweight. Thus, at population
level, effects of isolated measures
seem to be low.
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