Table 3.
Protein C and antithrombin III activity in 18 patients with idiopathic ON, 18 patients with corticosteroid-associated ON, and 44 healthy controls
| Protein C | Antithrombin III | |
|---|---|---|
| (%) | (%) | |
| Idiopathic ON | ||
| mean (SD) | 174 (50) | 110 (22) |
| median | 163 | 115 |
| minimum–maximum range | 95–273 | 72–145 |
| Corticosteroid-associated ON | ||
| mean (SD) | 138 (42) a | 103 (17) |
| median | 129 | 107 |
| minimum–maximum range | 85–243 | 68–125 |
| Healthy controls | ||
| mean (SD) | 167 (35) | 102 (18) |
| median | 160 | 98 |
| minimum-–maximum range | 99–237 | 80–146 |
a p = 0.02 when compared with healthy controls.