|Maternal deaths due to insecure abortion in developing countries fall within a narrow range from 9% to 17% of all maternal deaths. Together the lowest and the highest figures are found in Africa (9% in Southern Africa and 17% in Eastern Africa), reproducing the combined impact of the permitted abortion and health systems, with more copious access to abortion and post abortion care in the health systems.
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.