What were the results of the study, with a succinct summary of the findings? Please include the measure of association they found, with confidence intervals, if any. [Hint: The abstract will be useful for this.] This is about the article 'Association of Arsenic Exposure during pregnancy with Fetal Loss and Infant Death': A cohort study in Bangladesh (Rahman).

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The study investigated the effects of arsenic exposure, through contaminated drinking water from tube wells, on infant death and fetal loss in Bangladesh. More specifically, the 5 outcomes including, early fetal loss, late fetal loss, neonatal death, postnatal death and infant death were correlated with arsenic concentration in drinking water obtained from contaminated tube wells.

The study reported that at arsenic concentrations of more than 50 `mu g`  per liter, there is significantly higher risk of fetal loss (with a relative risk of 1.14 and the 95% confidence interval was 1.04 to 1.25). Similarly, such elevated arsenic concentrations also increased the risk of infant death, with a relative risk of 1.17 and 95% confidence interval range of 1.03 to 1.32. In other words, the chances of fetal loss increased by 14% and that of infant death increased by 17% due to arsenic exposure at elevated levels. None of the covariates had any significant effect on association between exposure levels and outcomes, except for calendar year.

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