Observed and Expected Adverse Reaction Rates to Dipyridamole
| Patient category | No. observed (expected) | Total | ||
|---|---|---|---|---|
| Male | Female | |||
| No adverse reaction | 271 | 249 | 520 | |
| (253) | (267) | |||
| Adverse reaction | 183 | 230 | 413 | |
| (201) | (212) | |||
| Total observed | 454 | 479 | 933 | |
χ-square value 5.61 > 3.84 is the critical value at P − 0.05.