Body mass index (BMI), defined as weight divided by the square of height, was developed to allow assessment of weight independent of height. Other measures have also been considered in an attempt to better capture risk for all-cause mortality as well as obesity related morbidities, which include such conditions as hypertension, atherosclerotic vascular disease, diabetes, some cancers, and the recently defined locomotive syndrome. Thus, BMI has come to be augmented by other simple biometrics, primarily waist circumference (WC) and various derivatives of WC such as waist-hip ratio (WHR) and waist-height ratio (WHtR).
The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of similar kind. It reflects the average number of citations to recent articles published in science and social science journals in a particular year or period, and is frequently used as a proxy for the relative importance of a journal within its field. It is first devised by Eugene Garfield, the founder of the Institute for Scientific Information. The impact factor of a journal is evaluated by dividing the number of current year citations to the source items published in that journal during the previous two years.
Last date updated on September, 2014