|Genotyping is the process of determining differences in the genetic make-up of an individual by examining the individual's DNA sequence using biological assays and comparing it to another individual's sequence or a reference sequence. It is known that Pharmacogenomics tests performed before drug treatment, lower overall medical costs and provide higher quality of life and longer life expectancy. However, we still need a precise demonstration that PG tests offer an added value, in terms of relative cost and benefit.The usefulness of the variants in clinical practice depends on improving the diagnostic prediction or fostering changes in prevention or treatment strategies. There is a compelling need for detailed and extensive studies to establish the cost and effectiveness of genotyping.
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.