HSRT Assessing Credibility of Claims 2

Question 1

A health blogger claims that 'Vitamin C megadoses cure cancer, and thousands of patients have been healed.' Which credibility criterion is MOST undermined by this statement?

Accepted Answer

Verifiability — the claim lacks citations, study references, or reproducible evidence

Answer

A credible claim must be verifiable through reproducible, referenced evidence. 'Thousands healed' without citations is unverifiable anecdote.

Question 2

A pharmaceutical company publishes a study showing its new antibiotic is 40% more effective than the standard of care. The study was funded exclusively by the company. Which credibility concern is MOST salient?

Accepted Answer

Conflict of interest — industry-funded studies have a documented tendency toward favorable outcomes

Answer

Industry funding is a well-documented source of bias that inflates positive findings. This represents a conflict of interest that compromises credibility.

Question 3

A respiratory therapist hears a claim from a colleague: 'High-flow oxygen always prevents intubation in COPD exacerbations.' Which credibility question should be asked FIRST?

Accepted Answer

Is this consistent with current evidence-based guidelines for COPD management?

Answer

Evidence-based guidelines synthesize the best available research and are the primary reference for assessing the credibility of clinical claims.

Question 4

A hospital administrator cites a testimonial from one nurse as evidence that a new scheduling system 'greatly improved staff satisfaction.' Which limitation of this evidence is MOST critical to identify?

Accepted Answer

A single testimonial is anecdotal and cannot represent the distribution of staff experiences

Answer

A single testimonial is an n=1 anecdote and provides no information about how representative that experience is across the broader staff population.

Question 5

A clinical dietitian encounters a study that claims: 'Our proprietary protein supplement increases muscle mass by 300% in athletes.' The use of '300%' should trigger which credibility scrutiny?

Accepted Answer

Proportionality — extraordinary claims require extraordinary evidence; a 300% effect size is implausibly large

Answer

Extraordinary claims demand extraordinary evidence. A 300% increase in muscle mass far exceeds known physiological limits, warranting extreme skepticism.

HSRT - Health Sciences Reasoning Test Practice Test

HSRT - Health Sciences Reasoning Test Practice Test

HSRT Assessing Credibility of Claims 2