TABLE 12-8 A Study Published in the American Journal of Public Health

question 72

Multiple Choice

TABLE 12-8
A study published in the American Journal of Public Health was conducted to determine whether the use of seat belts in motor vehicles in San Diego County depends on ethnic status. A sample of 792 children treated for injuries sustained from motor vehicle accidents was obtained, and each child was classified according to (1) ethnic status (Hispanic or non-Hispanic) and (2) seat belt usage (worn or not worn) during the accident. The number of children in each category is given in the table below.

-Referring to Table 12-8, which test would be used to properly analyze the data in this experiment?

• A) X² test for independence
• B) X² test for differences among more than two proportions
• C) Wilcoxon rank sum test for independent populations
• D) Kruskal-Wallis rank test

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Definitions:

Third-party Payer

An entity (usually an insurance company or government agency) that pays medical expenses on behalf of the patient.

Elective Procedure

A medical procedure that is not required to sustain life but is requested for payment to the third-party payer by the patient or physician. Some elective procedures are paid for by third-party payers, whereas others are not.

Predetermination

The act of deciding or establishing something in advance or having a predetermined outcome.

Third-party Payer

An entity (other than the patient or healthcare provider) responsible for paying medical expenses, such as insurance companies.