Summarizes the observed relationship

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Reference no: EM133263893

In a case-control study of salmonellosis, the investigators considered its association with potato salad consumption. The 2 x 2 table below summarizes the observed relationship:

The odds ratio associated with potato salad eating = ad/bc = 36*36 / 3*12 = 36. All controls were sampled at the end of the study. Is this odds ratio a good approximation of the risk ratio?

choose one answer from below:

1. No, because the odds ratio associated with potato salad eating is too large.

2. Yes, because both exposure and outcome are common in the study population.

3. No, because salmonellosis is neither rare in this population (39 out of 87 were sick) nor did we use incidence density sampling.

4. Yes, because salmonellosis was rare in the non-exposed group.

Reference no: EM133263893

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