Which is a disease-related factor in screening?

• A. Availability of a generated report
• B. Preclinical disease prevalence should be high in the screened population
• C. Cost of the test
• D. Population willingness to participate

Answer: (B)

In screening, factors tied directly to the disease and who you’re screening are most important. The key disease-related factor is how much preclinical disease is present in the population you plan to screen. When preclinical disease prevalence is higher, a screening test is more likely to detect true cases in that group, boosting the expected number of true positives and improving the test’s positive predictive value and overall yield. This is fundamentally about the disease biology and the population being screened, not about how the results are reported, how much the test costs, or whether people are willing to participate. The other elements affect feasibility and uptake, but they don’t reflect the disease’s presence in the population.