Free MRCP revision | January 2015 Paper 2

Question category: Statistics

A trial is performed to study the effect of fish oil on post operative infection rates. The relative risk of infection compared to those on placebo is 0.8 with a 95% confidence interval of 0.6 to 1. Which of the following is true?

Fish oil undoubtedly reduces infection rates

80% of patients didnt have an infection

The standard deviation was 0.2

There was an 80% decrease in infections

There was no statistically significant difference in infection rate when fish oil was used

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