HSRT - Health Sciences Reasoning Drawing Logical Inferences Questions and Answers

Question 1

A clinical study observes that in a group of 100 patients with a specific type of bacterial infection, 95 patients who were treated with Antibiotic X recovered within three days.
The remaining 5 patients took a week to recover.
All patients were of similar age and overall health status.
Which of the following is the most logical inference from this information?

Accepted Answer

Antibiotic X is likely an effective treatment for this specific bacterial infection.

Answer

Antibiotic X is ineffective for 5% of the population.

Answer

Antibiotic X will cure any bacterial infection within three days.

Answer

Patients with this infection will always recover within a week.

Question 2

A patient's chart notes the following: 'Patient reports increased fatigue and shortness of breath over the past month. A recent blood test shows significantly lower-than-normal red blood cell count.' Based only on this information, what can be logically inferred?

Accepted Answer

The patient's symptoms are a direct result of the low red blood cell count.

Answer

The patient has a poor diet.

Answer

The patient is suffering from a severe cardiac condition.

Answer

The patient requires an immediate blood transfusion.

Question 3

In a hospital ward, all patients diagnosed with influenza are placed in isolated rooms. Mr. Smith is in an isolated room on this ward. Therefore, it can be logically concluded that:

Accepted Answer

Mr. Smith may or may not have influenza.

Answer

Mr. Smith has been diagnosed with influenza.

Answer

All patients in isolated rooms have influenza.

Answer

No other patients on the ward have influenza.

Question 4

A new screening test for a certain disease is advertised as having 99% accuracy. Which of the following is a necessary inference from this statement?

Accepted Answer

The term 'accuracy' is too ambiguous to make a definitive inference without more data.

Answer

Out of 100 people with the disease, the test will correctly identify 99 of them.

Answer

If you test positive, there is a 99% chance you have the disease.

Answer

The test will produce an incorrect result in 1 out of every 100 tests administered.

Question 5

A physical therapist observes that a patient's range of motion in their knee has increased by 15 degrees after three weeks of a specific exercise regimen. The patient also reports less pain. Which of the following conclusions is most warranted?

Accepted Answer

The patient has experienced a positive change in their condition.

Answer

The exercise regimen is the sole cause of the improvement.

Answer

This specific exercise regimen will work for all patients with knee pain.

Answer

The patient no longer requires physical therapy.

Question 6

Studies consistently show that individuals who exercise for at least 150 minutes per week have a lower incidence of cardiovascular disease than those who do not. From this statistical correlation, which of the following can be logically inferred?

Accepted Answer

An association exists between regular exercise and a lower risk of cardiovascular disease.

Answer

Lack of exercise is the primary cause of cardiovascular disease.

Answer

Exercising for 150 minutes a week guarantees prevention of cardiovascular disease.

Answer

Individuals with cardiovascular disease should immediately start exercising for 150 minutes per week.