Two Surgical Procedures Are Widely Used to Treat a Certain

question 82

Essay

Two surgical procedures are widely used to treat a certain type of cancer. To compare the success rates of the two procedures, random samples of surgical patients were obtained and the numbers of patients who showed no recurrence of the disease after a 1-year period were recorded. The data are shown in the table. $$\begin{array} { l c c } \hline & n & \text { Number of Successes } \\\hline \text { Procedure A } & 100 & 83 \\\text { Procedure B } & 100 & 81 \\\hline\end{array}$$ How large a sample would be necessary in order to estimate the difference in the true success rates to within .10 with 95% reliability?

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Definitions:

Prevention

Prevention involves measures or actions taken to stop something undesirable from occurring, such as diseases or accidents.

Psychological Disorders

Mental health conditions characterized by disruptions in thinking, feeling, mood, and behavior, which impede daily functioning.

Treatment

The management and care of a patient for the purpose of combating a disease or disorder.

Biopsychosocial Model

An interdisciplinary model that looks at the interconnection between biology, psychology, and socio-environmental factors in understanding health and illness.