Which of the following biases occurs when various groups in a study are assessed differently for an outcome?

MATLAB: An Introduction with Applications
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**Question:**

Which of the following biases occurs when various groups in a study are assessed differently for an outcome?

- A. Selection
- B. Reporting
- C. Detection
- D. Attrition

**Explanation:**

The question is asking about a type of bias in research studies. Bias can affect the validity and reliability of the study's findings. In this context:

- **Selection Bias:** Occurs when participants are not randomly selected, leading to a non-representative sample.
- **Reporting Bias:** Happens when there are differences in the way results are reported, influenced by the nature and direction of the findings.
- **Detection Bias:** Arises when assessments are systematically different among groups. This can happen if the individuals collecting the data are aware of the group allocations.
- **Attrition Bias:** Relates to systematic differences between groups in withdrawals or exclusions from a study.
Transcribed Image Text:**Question:** Which of the following biases occurs when various groups in a study are assessed differently for an outcome? - A. Selection - B. Reporting - C. Detection - D. Attrition **Explanation:** The question is asking about a type of bias in research studies. Bias can affect the validity and reliability of the study's findings. In this context: - **Selection Bias:** Occurs when participants are not randomly selected, leading to a non-representative sample. - **Reporting Bias:** Happens when there are differences in the way results are reported, influenced by the nature and direction of the findings. - **Detection Bias:** Arises when assessments are systematically different among groups. This can happen if the individuals collecting the data are aware of the group allocations. - **Attrition Bias:** Relates to systematic differences between groups in withdrawals or exclusions from a study.
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