**2. Materials and methods**

In a retrospective study, all publications of placenta previa in our region are reviewed. The survey conducted at King Abdulaziz University in Jeddah, Saudi Arabia, to identify the possible complication of abnormal placentation such as placenta previa. PubMed, which is a free database search, used to determine the number of publications of placenta previa in Saudi Arabia data collected for 18 years from January 2000 to May 2018. Only Institute for Scientific Information (ISI) publication is selected "All abstracts that appeared in the PubMed database collected analyzed meticulously for the year of publication, type of research, institute and the region, and the complication that illustrated in each publication." The inclusion criteria, as well as exclusion criteria, were clearly defined before the study. The inclusion criteria were studies that were ISI, carried out in and or published from (the Kingdom of Saudi all Arabia), about placenta previa in Saudi Arabia. The exclusion criteria were as follows: all studies were not ISI or were neither conducted nor published from Kingdom of Saudi Arabia. The number of publication retrieved when we used (placenta previa Saudi Arabia) was 40, but only 19 study included as for inclusion criteria. The studies defined according to their abstract, the title, year of publications, the aim, material and methods, results and conclusions. Statistical analysis SPSS statistical software (version 22) is used for analysis. Data are coded for numbers and percentages.
