If a research question concerns cancer incidence after an exposure, which type of outcome should be prioritized?

• A. Short-Term outcomes
• B. Composite outcomes
• C. Long-Term outcomes
• D. Sensitivity outcomes

Answer: (C)

When studying cancer incidence after an exposure, the main goal is to observe new cancer cases that develop over time. Cancer often has a long latency period, meaning there can be many years between exposure and diagnosis. Prioritizing long-term outcomes provides enough follow-up time to capture these incidents and accurately assess how the exposure influences cancer risk.

Short-term outcomes focus on immediate or early effects that may not reflect eventual cancer development, so they don’t adequately measure incidence after exposure. Composite outcomes mix different kinds of events, which can obscure the specific cancer incidence and its timing. Sensitivity outcomes is not a standard focus for incidence studies and wouldn’t directly address whether exposure increases cancer risk.

Thus, long-term outcomes are the best choice for measuring cancer incidence following an exposure.