Instruction 15-8
Four Surgical Procedures Currently Are Used to Install

question 40

True/False

Instruction 15-8
Four surgical procedures currently are used to install pacemakers.If the patient does not need to return for follow-up surgery,the operation is called a "clear" operation.A heart centre wants to compare the proportion of clear operations for the four procedures,and collects the following numbers of patients from their own records:
| Procedure |
$$\begin{array} { | l | c | c | c | c | c | } \hline & \mathrm { A } & \mathrm { B } & \mathrm { C } & \mathrm { D } & \text { Total } \\\hline \text { Clear } & 27 & 41 & 21 & 7 & 96 \\\hline \text { Return } & 11 & 15 & 9 & 11 & 46 \\\hline \text { Total } & 38 & 56 & 30 & 18 & 142 \\\hline\end{array}$$ They will use this information to test for a difference among the proportion of clear operations using a chi-square test with a 0.05 level of significance.
-Referring to Instruction 15-8,the decision made suggests that the four procedures do not all have the same proportion of clear operations.

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Definitions:

Bulimia Nervosa

An eating disorder marked by periods of binge-eating followed by purging to avoid weight gain.

Eating Pattern

An individual’s habitual dietary intake, including the timing, amount, and types of food consumed.

Coping Mechanisms

Coping Mechanisms are the strategies individuals use to manage stressful situations or emotional difficulties, which can be either adaptive or maladaptive.

Eating Disorders

Disorders characterized by abnormal or disturbed eating habits, which negatively impact one's health and daily functioning.