What type of bias is a significant limitation of cohort studies?Question 5Select one:a.Performanceb.Selectionc.Detectiond.Recall

Breakdown of the Problem

1. Identify the types of biases common in cohort studies.
2. Assess which of these biases is a significant limitation specifically for cohort studies.

Relevant Concepts

1. Bias Types:
   • Performance Bias: Differences in the care provided apart from the intervention.
   • Selection Bias: Systematic differences in characteristics between those selected for the study and those who are not.
   • Detection Bias: Differences in how outcomes are assessed.
   • Recall Bias: Inaccuracies in participants' recollection of past events or exposures.

Analysis and Detail

1. Performance Bias is more related to interventional studies.
2. Detection Bias can affect all types of studies but is not specifically a cohort limitation.
3. Recall Bias is more prevalent in retrospective studies but does not specifically pertain to cohort studies, which are often prospective.
4. Selection Bias occurs when there is a systematic difference in the participants in the cohort study. This bias can significantly impact the validity of the study results.

Verify and Summarize

• Among these biases, Selection Bias is particularly significant in cohort studies due to the challenges in selecting an appropriate sample that represents the larger population, potentially skewing results.

Final Answer

b. Selection