Andrew J Woods, Yasmine C Probst, Jennifer Norman, Karen Wardle, Sarah T Ryan, Linda Patel, Ruth K Crowe, Anthony D Okely
Correlates of physical activity and sedentary behaviour in children attending before and after school care: a systematic review
BMC public health
relative benefit active treatment control usually expressed relative risk relative risk reduction odds ratio measures used extensively clinical epidemiological investigations clinical decision making however meaningful use measure number needed treat measure calculated inverse absolute risk reduction advantage conveys statistical clinical significance doctor furthermore used extrapolate published findings patient arbitrary specified baseline risk relative risk reduction associated treatment constant levels risk