Table 1.
Clinical features and bleeding rates in control and antiplatelet groups.
| Features and Parameters | Antiplatelet medication | Chi-test, t-test (control versus mono-/dual therapy group) | |||
|---|---|---|---|---|---|
| Group | Control | Clopidogrel | Clopidogrel/Aspirin | Significance P | Power |
| Number of cases | 281 | 64 | 60 | ||
| Postoperative bleeding | |||||
| Case | 2 | 1 | 2 | ||
| Rate (95% confidence) | 0.7% (0.2–2.6%) | 1.6% (0.3–8.3%) | 3.3% (0.9–11.3%) | 0.46/0.14 | 0.18/0.45 |
| Age (years) | 60.7 ± 6.3 | 67.9 ± 14.6 | 64.0 ± 10.8 | <0.00/<0.00 | 0.98/0.74 |
| Male/female | 129/152 | 35/29 | 44/16 | 0.21/0.00 | 0.24/0.98 |
| Numbers of teeth | 1.7 ± 1.8 | 1.5 ± 0.8 | 1.5 ± 1.1 | 0.32/0.38 | 0.39/0.30 |
| Dose | 75 mg/day | 75 mg + 100 mg/day | |||
| Indication for antithrombotic medication | |||||
| Apoplexy + TIA | 6 | 7 | 0.15 | ||
| Stent + bypass | 16 | 28 | |||
| Myocardial infarction + other heart disorders | 12 | 13 | |||
| Others | 3 | 3 | |||
| Unknown | 27 | 9 | |||