Esophageal Atresia

question 160

Multiple Choice

Esophageal atresia:

• A) New opening of the esophagus into the stomach
• B) Esophagus is dilated
• C) Failure of esophageal sphincter to relax
• D) Lack of opening of esophagus to the stomach at birth
• E) Presence of twisted veins around the esophagus

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Definitions:

Percentile

A measure used in statistics indicating the value below which a given percentage of observations in a group of observations falls.

Z-score

A statistical measure that describes a value's relationship to the mean of a group of values, expressed in terms of standard deviations from the mean.

Variability

A quantitative measure that describes the degree to which scores in a distribution are spread out or clustered together.

Standard Deviation

A measure of variability that represents the average amount by which individual scores in a distribution vary from the mean.