Ensiyeh Jenabi

BACKGROUND: Stomach cancer is a major health problem in many countries. Understanding the current burden of stomach cancer and the differential trends across various locations is essential for formulating effective preventive strategies. We report on the incidence, mortality, and disability-adjusted life-years (DALYs) due to stomach cancer in 195 countries and territories from 21 regions between 1990 and 2017. METHODS: Estimates from GBD 2017 were used to analyse the incidence, mortality, and DALYs due to stomach cancer at the global, regional, and national levels. The rates were standardised to the GBD world population and reported per 100 000 population as age-standardised incidence rates, age-standardised death rates, and age-standardised DALY rates. All estimates were generated with 95% uncertainty intervals (UIs). FINDINGS: In 2017, more than 1·22 million (95% UI 1·19-1·25) incident cases of stomach cancer occurred worldwide, and nearly 865 000 people (848 000-885 000) died of stomach cancer, contributing to 19·1 million (18·7-19·6) DALYs. The highest age-standardised incidence rates in 2017 were seen in the high-income Asia Pacific (29·5, 28·2-31·0 per 100 000 population) and east Asia (28·6, 27·3-30·0 per 100 000 population) regions, with nearly half of the global incident cases occurring in China. Compared with 1990, in 2017 more than 356 000 more incident cases of stomach cancer were estimated, leading to nearly 96 000 more deaths. Despite the increase in absolute numbers, the worldwide age-standardised rates of stomach cancer (incidence, deaths, and DALYs) have declined since 1990. The drop in the disease burden was associated with improved Socio-demographic Index. Globally, 38·2% (21·1-57·8) of the age-standardised DALYs were attributable to high-sodium diet in both sexes combined, and 24·5% (20·0-28·9) of the age-standardised DALYs were attributable to smoking in males. INTERPRETATION: Our findings provide insight into the changing burden of stomach cancer, which is useful in planning local strategies and monitoring their progress. To this end, specific local strategies should be tailored to each country's risk factor profile. Beyond the current decline in age-standardised incidence and death rates, a decrease in the absolute number of cases and deaths will be possible if the burden in east Asia, where currently almost half of the incident cases and deaths occur, is further reduced. FUNDING: Bill & Melinda Gates Foundation.

Background: Given the increasing rate of cesarean delivery and request without maternal or fetal indication among pregnant women, this systematic review was conducted to obtain the reasons for maternal request for elective cesarean section.Methods: We searched published studies from the first year of records through August 2018 in PubMed, Scopus, and Web of Science. The quality assessment of the studies was performed by the improved Newcastle-Ottawa Scale. Due to data heterogeneity; no meta-analysis was performed.Results: Twenty-eight studies met the inclusion criteria and were included in the review. The results of studies on the reasons of maternal request for elective cesarean section were fear of labor pain, anxiety for fetal injury/death, fear of childbirth, urinary incontinence, pelvic floor and vaginal trauma, doctors suggestion, time of birth, experience of prior bad delivery, previous infertility, infertility, anxiety for gynecologic examination, anxiety for loss of control, avoid long labor, anxiety for lack of support from the staff, fear of fecal, emotional aspects, body weight of the infant at birth and abnormal prenatal examination. The results of studies on the demographic reasons of maternal request for elective cesarean section were advanced maternal age, parity, occupation, education, maternal obesity, family status, decreasing level of religiosity, household income, number of living children and age at marriage.Conclusions: Our study proposed that the comprehensive programs and the interventions of health promotion should be designed to reduce unnecessary cesarean section and improve the performance of vaginal delivery.