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Background Recently the performance rate of one anastomosis gastric bypass (OAGB) bariatric surgery has increased. Bile reflux is on of common considered complication of OAGB challenging surgeon. Methods We searched English full text with keyword “bile reflux” AND “OAGB” OR “one anastomosis gastric bypass” OR “SAGB” OR “single anastomosis gastric bypass” that published from January 1st, 2000 to December 31st, 2020 in PubMed, EMBASE, Google scholar and Cochrane Library. We included prospective or retrospective systematic review, review, clinical, and meta-analysis human article that its full text was available and focused on bile reflux after OAGB/SAGB as the fundamental performed bariatric surgery. Results A total of 1259 articles were analyzed, of which 5 were included. Analysis of number articles by year revealed that 2019 and 2020 was the highest number of published articles (n = 232; 68%). Study type analysis revealed that review studies and clinical research (n = 62; 18.2%) were the most frequent study types. Reported data on bile reflux after OAGB had diversity. Implicitly, postoperative incidence of bile reflux differed from 7.8 to 55.5%. General consensus was not existed among authors to consider the OAGB as the first suspect leading to postoperative bile reflux among other bariatric surgery types. Conclusion Although surgeons prefer to conduct OAGB procedure because of its easier surgical approach needing just one anastomosis formation it is not virtually clear that is the procedure costly benefitted regarding bile reflux outcomes.

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<p>The aim of this research was to develop a scale in order to measure psychological well-being in preschool children. Three hundred and seventy five to six year old children participated in the research from 5 regions of Tehran, using accidental sampling method. The participants were individually interviewed with the Well-Being in Preschool Children Scale, and their teachers completed Rutter’s Child Behavior Questionnaire about each of them. Data was analyzed with both exploratory and confirmatory factor analysis methods using WLSMV and GEOMIN oblique rotation, to examine factorial structure. <em>Samejima’s</em> graded response model was used to access psychometric features of the items. Test-retest reliability was measured and Pearson’s correlation was also used to assess divergent and convergent validity. Findings revealed that this scale has 3 main factors: self-concept, life satisfaction and resilience. The validity and reliability of the scale is also satisfactory. The well-being indicators in this scale are consistent with previous research on components of well-being in children. In addition there is a negative correlation between psychological well-being and behavioral problems, which is also illustrated in previous research. </p>