Q:

A large study of bladder cancer and cigarette smoking produced the following data:

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A large study of bladder cancer and cigarette smoking produced the following data:

INCIDENCE OF BLADDER CANCER (per 100,000 males per year)Cigarette smokers 48.0

Non-smokers 25.4

The relative risk of developing bladder cancers compared with non-smokers is:


  1. Categorical variable
  2. Ordinal data
  3. Numerical, continuous variable
  4. Numerical, discrete variable
  5. Proportion

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C. Numerical, continuous variable

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