Count table


Proportion of cases within groups


Risk ratio estimation

Risk ratio (RR) is calculated by dividing the proportion of cases in the exposed group by the proportion of cases in the non exposed group.

Estimate refers to the RR computed from the table

Lower and upper are the limits of the 95% confidence interval estimated from the table


p value

Calculated as the probability of obtaing the RR value observed or a higher value if the true RR is 1