A Medical Researcher Is Interested in Assessing the Probability of Some

question 90

Multiple Choice

A medical researcher is interested in assessing the probability of some symptoms of coronary heart disease being present at a given age. For this reason he uses the following data collected on 100 individuals. The response variable is CHD which is 1 if coronary heart disease is present and 0 otherwise. The following linear probability model and logit model have been estimated: Linear probability: = - 0.53796 + 0.02181Age
Logit: = Using the logitmodel, find the age of a person for which the estimated chances of having coronary heart disease are 50%?

• A) 47.8 years old
• B) 56.3 years old
• C) 45.5 years old
• D) 47.6 years old

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Definitions:

Positive Symptoms

Symptoms of a disorder that are present and observed, typically referring to psychosis, such as hallucinations or delusions.

Schizophrenia

A long-term mental disorder involving a breakdown in the relation between thought, emotion, and behavior, leading to faulty perception and withdrawal from reality.

Behavioural Excesses

Actions or behaviors that occur too frequently or intensely, often indicating an imbalance or disorder.

Delusion

A false belief or judgment about external reality, held with conviction despite evidence to the contrary.