Journal of clinical epidemiology
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The objective of this study was to develop a scoring system for identifying women with near-miss maternal morbidity, and differentiating these women from those with severe but not life-threatening conditions. ⋯ Near-miss morbidities identified using the scoring systems presented can be incorporated into clinical case review and epidemiologic studies to enhance the monitoring of obstetric care and to improve estimates of the incidence of life-threatening complications in pregnancy.
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Conventional graphs often include error bars around the group means. Regardless of what these bars depict, they are uninformative as to whether a difference between the groups is statistically significant. ⋯ This article suggests plotting the null bar or null zone: that is, the range or area in which the means of the two groups fall if the null hypothesis of no difference cannot be rejected. The bar and zone are simply derived from the confidence interval around the difference, obtained from the t-test.