High consumption of coffee is associated with decreased multiple sclerosis risk; results from two independent studies

 

Case study : High consumption of coffee is associated with decreased multiple sclerosis risk; results from two independent studies
Read the paper and answer following questions in the critique –

EVALUATION FOR CASE CONTROL

1)Are cases and controls clearly defined? (Is there evidence that the entry criteria for cases and controls are fulfilled?)

2)Do cases and controls come from the same population?

3)Was exposure status clearly defined and obtained in the same way for all study subjects?

4)Was exposure assessed blind to the outcome?

5)Was outcome assessed blind to exposure?

6)What the response rate for cases and controls?

7)Did the authors adjust for all non-study determinants of the disease in the analyses or match?

8)Was the study size sifficiently large to justify the authors’ conclusions?

9)If the results were not statistically significant, did the authors report power?

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