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Part 6: Match the sources of bias with the type of study design and the best way to minimize the blas. Type of study design:
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1. Loss to follow-up   - Study design: Option (b.) Ways to minimize: Option (b.)   

2. Recall, interviewer -   Study design: Option (a.) Ways to minimize: Option (c.)

3. Healthy worker effect - Study design: Option (b.) Ways to minimize: Option (a.)

4. Berkson's bias    - Study design: Option (a.) Ways to minimize: Option (e.)

5. Neyman's bias -     Study design: Option (a.) Ways to minimize: Option (d.)

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