Table 1.
Demographics and presenting features of patients diagnosed with ITP within 6 weeks of COVID-19 vaccination.
| Characteristics | No. (%) | Range [IQR] | |
|---|---|---|---|
| Female | 28 (56) | ||
| Age in median, y | 63.5 | 20-97 [51.8-77.0] | |
| ChAd | 40 (80) | ||
| Prior history of ITP | 13 (26) | ||
| Time from vaccination to presentation in median, d | 15 | 1-41 [8.3-23.8] | |
| Platelet count at presentation (×109/L) | 7 | 0-87 [4.0-13.0] | |
| Platelet nadir (×109/L) | 5 | 0-50 [1.0-12.8] | |
| WHO bleeding grade | |||
| 0 | 8 (16) | ||
| 1 | 27 (54) | ||
| 2 | 9 (18) | ||
| 3 | 3 (6) | ||
| 4 | 2 (4) | ||
| 5 | 1 (2) | ||
| ITP-BAT skin (n = 35) | |||
| 0 | 8 (23) | ||
| 1 | 15 (43) | ||
| 2 | 6 (17) | ||
| 3 | 6 (17) | ||
| 4 | 0 | ||
| 5 | 0 | ||
| ITP-BAT mucosa (n = 35) | |||
| 0 | 21 (60) | ||
| 1 | 8 (23) | ||
| 2 | 3 (9) | ||
| 3 | 1 (3) | ||
| 4 | 3 (9) | ||
| 5 | 0 | ||
| ITP-BAT organ (n = 35) | |||
| 0 | 25 (71) | ||
| 1 | 5 (14) | ||
| 2 | 1 (3) | ||
| 3 | 3 (9) | ||
| 4 | 1 (3) | ||
| 5 | 1 (3) |
BAT, Bleeding Assessment Tool; ITP, immune thrombocytopenia.