Table 5.
Observer 2 criteria identified.
| Sensitivity in % (95 % CI) | Specificity in % (95 % CI) | PPV in % (95%CI) | NPV in % (95%CI) | Accuracy | |
|---|---|---|---|---|---|
| Indistinct nodal margins | 48 (35–62) | 86 (71–95) | 84 (68–93) | 52 (40–64) | 63 |
| Infiltration into adjacent tissues | 50 (36–64) | 86 (71–95) | 85 (69–93) | 53 (41–65) | 65 |
| Irregular nodal enhancement | 61 (47–74) | 84 (68–94) | 85 (71–93) | 58 (45–71) | 70 |
| Matted nodes | 20 (10–32) | 92 (78–98) | 79 (52–92) | 43 (33–54) | 48 |
| Central necrosis | 64 (50–77) | 70 (53–84) | 77 (63–86) | 57 (42–68) | 67 |
CI: confidence interval; PPV: positive predictive value; NPV: negative predictive value.