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Nursing 472: Class Exercises

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PICO: In school-age children (P), what is the effect of a school-based physical activity program (I) on a reduction in the incidence of childhood obesity (O) compared with no intervention (C) within a 1 year period (T)?

Children at recessBy Playedwithfire (myown) [CC-BY-SA-3.0 ( or GFDL (], via Wikimedia Commons