The impact factor is a measure of the frequency with which the "average article" in a journal has been cited in a given period of time. It is calculated based on a three-year period, and can be considered to be the average number of times published papers are cited up to two years after publication. Thus, the impact factor 2014 for a journal would be the number of times articles published in that journal during the period 2012 and 2013 were cited in 2014. In short it is a measure of the frequency with which the "average article" in a journal has been cited in a particular year or period. It is a tool used to compare journals and assess the relative importance of a journal within a particular scientific field.
The impact factor is given by Journal Citation Reports, calculated by ISI (Institute of Scientific Information), Thomson Reuters. Thus JCR helps to measure research influence and impact at the journal and category levels, and shows the relationship between citing and cited journals. The impact factor calculation has to be done with careful attention without which may slow down many phenomena that influence citation rates. This information can be published in our peer reviewed journal with impact factors. The journal of Metabolic Syndrome has a good impact factor and are calculated using citations from the articles published in it.
Last date updated on July, 2014