Table 2 The \(2\times 2\) table for the event counts of drug j and a host factor given a specific AE i, where (1) denotes Group 1 and (2) denotes Group 2 based on a host factor such as sex or age
| Â | Group 1 | Group 2 | Total |
|---|---|---|---|
drug j | \(n^{(1)}_{ij}\) | \(n^{(2)}_{ij}\) | \(n_{ij}\) |
no drug j | \(n^{(1)}_{i\cdot }-n^{(1)}_{ij}\) | \(n^{(2)}_{i\cdot }-n^{(2)}_{ij}\) | \(n_{i\cdot }-n_{ij}\) |
Total | \(n^{(1)}_{i\cdot }\) | \(n^{(2)}_{i\cdot }\) | \(n_{i\cdot }\) |