Test characteristics of direct PA testing for ITP diagnosis and confirmation of clinical remission
| Test characteristic . | Positive assay, ITP diagnosis . | Negative assay, clinical remission . |
|---|---|---|
| Sensitivity, % (95% CI) | 90 (85-93) | 87 (76-93) |
| Specificity, % (95% CI) | 78 (69-85) | 91 (87-93) |
| Positive predictive value, % (95% CI) | 90 (85-93) | 65 (55-75) |
| Negative predictive value, % (95% CI) | 78 (69-85) | 97 (94-99) |
| Positive likelihood ratio | 4.0 | 9.3 |
| Test characteristic . | Positive assay, ITP diagnosis . | Negative assay, clinical remission . |
|---|---|---|
| Sensitivity, % (95% CI) | 90 (85-93) | 87 (76-93) |
| Specificity, % (95% CI) | 78 (69-85) | 91 (87-93) |
| Positive predictive value, % (95% CI) | 90 (85-93) | 65 (55-75) |
| Negative predictive value, % (95% CI) | 78 (69-85) | 97 (94-99) |
| Positive likelihood ratio | 4.0 | 9.3 |
CI, confidence interval.