What Is an Often-Neglected but Very Important Component of Preventing

question 14

Multiple Choice

What is an often-neglected but very important component of preventing transmission of pathogens between patients, particularly those who are ventilated?

• A)adequate antibiotic therapy
• B)brushing of teeth
• C)hand washing
• D)use of negative-pressure rooms

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Definitions:

Standardized Value

A score that has been transformed to have a mean of zero and a standard deviation of one, also known as a z-score, enabling comparison across different scales or distributions.

Wilcoxon Rank Sum Test

A non-parametric statistical test used to compare two independent samples to assess if their population mean ranks differ.

Non-Normality

A situation where a data set does not follow a normal distribution, affecting the choice of statistical methods for analysis.

Rank Sum Statistic

A statistical measure used in non-parametric tests to evaluate the significance of the difference between two independent samples based on ranks of the data.