Data are cross-tabulated with a TABLES <EXPOSURE> <DISEASE> command.
Table cells labels:
| Disease + | Disease - | ||
| Exposure + | a | b | n1 |
| Exposure - | c | d | n2 |
| m1 | m2 | N |
Point estimates:
p^1 = a / n1 (incidence in exposure group)
p^2 = c / n2 (incidence in unexposed group)
RR^ = p^1 / p^2 (relative risk)
95% confidence interval for RR based on ln transform and se estimate (formula, output, and StatCalc).