Public health is the practice of preventing disease and promoting good health within groups of people, from small communities to entire countries. Public health is the science of protecting the safety and improving the health of communities through education, policy making and research for disease and injury prevention. The approach to medicine that is concerned with the health of the community as a whole. Public health is community health. High-impact journals are those considered to be highly influential in their respective fields. 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 July, 2014