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Q5 - Were the groups similar at the start of the trial?

Think especially about those factors that might affect the outcome, such as:

  • age
  • sex
  • social class
  • risk factors for disease or adverse outcomes (like smoking)
  • how severe their disease was

Where to look for the information...

This information is usually found in the results section and is often given in a table.

In this particular study look at table 1 and the second paragraph of the results.

Click the "Answer 5" link below to find out what we thought...