Homework Answers
Relative risk of 2.3 means the risk in the exposed group is 2.3 times that of the non-exposed group and the risk in the exposed group is 130% above baseline.
When relative risk is > 1 suggests that there is an increased risk of that outcome in the exposed group.
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Risk difference is the difference between the two proportions.
Relative risk is the ratio between the two proportions
The risk difference (RD) and its 95% confidence
interval are calculated according to Newcombe & Altman
(2000)
The relative risk (RR), its standard error and 95% confidence interval are calculated according to Altman, 1991.
The relative risk or risk ratio is given by
standard error of the log relative risk
standard error of the risk difference
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