Table 1.
Contingency table
| Reports with the event of interest | Reports without the event of interest | |
|---|---|---|
| Reports with the vaccine of interest | A | B |
| All other reports | C | D |
Contingency table
| Reports with the event of interest | Reports without the event of interest | |
|---|---|---|
| Reports with the vaccine of interest | A | B |
| All other reports | C | D |