Bar Chart with Errors

Annotation category:
Chapter 3


Neonatologists (specialists in treating newborn babies) were asked whether or not they would recommend each of four treatments (IV feeding, intestinal surgery, cardiac surgery, and dialysis) for an ill newborn whose survival depends on getting that treatment. These questions were posed under five different assumptions about the newborn in question: normal, apart from the illness needing treatment; infant's mother infected with HIV; infant itself infected with HIV; Down syndrome; and Trisomy-13 (a serious neurological defect that always leads to the infant's death after a few days or weeks). The bars show the proportion of respondents who would recommend the needed treatment; this varies from nearly 100% for the simpler treatments applied to the otherwise-normal infant, down to 1% who would recommend dialysis for a baby with Trisomy-13. The graph also shows 95%-confidence intervals, based on the binomial distribution (chapter 3), for each proportion. Because of the large sample size, the asymmetry of these confidence intervals in scarcely discernable in the error bars.

Find this term in:  

Bar Chart with Errors Bar Chart with Errors