Given the Following Precision Study Results for an Automated Prothrombin

question 37

Multiple Choice

Given the following precision study results for an automated prothrombin time procedure: $\begin{array}{l}\text { Precision Study }\\\begin{array}{|l|l|l|l|}\hline & \text { Level 1 } & \text { Level 2 } & \text { Level 3 } \\\hline \text { Mean } & 10.5 \mathrm{sec} & 12.1 \mathrm{sec} & 19.4 \mathrm{sec} \\\hline \text { SD } & 0.06 & 0.18 & 0.17 \\\hline \text { CV } & 0.6 \% & 1.5 \% & 0.9 \% \\\hline \text { Manufacturer's } & & & \\ \text { CV } & 0.8 \% & 1.1 \% & 1.1 \% \\\hline\end{array}\end{array}$
Which is the appropriate interpretation?

• A) Precision study results are acceptable.No random error was detected.
• B) Precision study results are unacceptable.Instrument should be recalibrate and precision study repeated.
• C) Precision study results are unacceptable.The sampling pipet should be replaced and precision study repeated.
• D) Precision study results are unacceptable.Review results for outliers if present eliminate from data and recalculate CV.

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Definitions:

Well-Being

A state characterized by health, happiness, and prosperity, which encompasses both physical and mental health.

Biological Processes

Fundamental processes that occur in living organisms, ensuring growth, reproduction, and maintaining homeostasis.

Confounding Variable

A variable that influences both the dependent and independent variables in a study, possibly misleading the results if not controlled.

Control Group

In experimental research, the group of subjects that does not receive the treatment or experimental manipulation, serving as a baseline to compare the effects.