Characteristics of patients misdiagnosed as having primary ITP compared with patients who were properly diagnosed
| . | All misdiagnosed patients (n = 46) . | Patients correctly diagnosed as primary ITP (n = 259) . |
|---|---|---|
| Age, median (IQR), y | 59.5 (38.8-73.5) | 50 (32.5-64) |
| Female, n (%) | 25 (54.3) | 163 (62.9) |
| Lowest platelet count ever, median (IQR) | 43 (15-62.5) | 14 (3.5-45.5) |
| Patients with platelet nadir <20 × 109/L, n (%) | 13 (28.3) | 146 (56.4) |
| No bleeding, n (%) | 9 (19.6) | 39 (15.1) |
| Minor bleeding only, n (%) | 21 (45.7) | 73 (28.2) |
| Any grade 2 bleed, n (%) | 16 (34.8) | 147 (56.8) |
| Any nonskin grade 2 bleed, n (%) | 4 (8.7) | 123 (47.5) |
| ICH, n (%) | 1 (2.2) | 6 (2.3) |
| Number of ITP treatments until last follow-up, median (IQR) | 1 (0-2) | 3 (1-5) |
| Untreated patients, n (%) | 15 (32.6) | 53 (20.5) |
| . | All misdiagnosed patients (n = 46) . | Patients correctly diagnosed as primary ITP (n = 259) . |
|---|---|---|
| Age, median (IQR), y | 59.5 (38.8-73.5) | 50 (32.5-64) |
| Female, n (%) | 25 (54.3) | 163 (62.9) |
| Lowest platelet count ever, median (IQR) | 43 (15-62.5) | 14 (3.5-45.5) |
| Patients with platelet nadir <20 × 109/L, n (%) | 13 (28.3) | 146 (56.4) |
| No bleeding, n (%) | 9 (19.6) | 39 (15.1) |
| Minor bleeding only, n (%) | 21 (45.7) | 73 (28.2) |
| Any grade 2 bleed, n (%) | 16 (34.8) | 147 (56.8) |
| Any nonskin grade 2 bleed, n (%) | 4 (8.7) | 123 (47.5) |
| ICH, n (%) | 1 (2.2) | 6 (2.3) |
| Number of ITP treatments until last follow-up, median (IQR) | 1 (0-2) | 3 (1-5) |
| Untreated patients, n (%) | 15 (32.6) | 53 (20.5) |