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A 2 × 2 contingency table for disproportionality analysis.
| Pulmonary haemorrhage and haemoptysis AEs | Non-pulmonary haemorrhage and haemoptysis AEs | Total | |
|---|---|---|---|
| Drugs of interest (BV-related subgroup) | a | b | a + b |
| Other drugs | c | d | c + d |
| Total | a + c | b + d | a + b + c + d |
