Table 2.
Test parameters calculated for each threshold for positivity for smooth muscle tumors and all tumors included in this study
| Threshold for positivity | |||
|---|---|---|---|
|
|
|||
| Parameter | ≥ 1+ (95% CI) | ≥ 4+ (95% CI) | ≥ 6+ (95% CI) |
| Smooth Muscle Tumors | |||
| Odds Ratio | 144 (8-2493, P = 0.0006) | 17 (6-51, P < 0.0001) | 33 (9-114, P < 0.0001) |
| Sensitivity | 100 (87-100) | 78 (59-90) | 78 (60-90) |
| Specificity | 69 (55-81) | 83 (69-91) | 90 (77-96) |
| Positive Predictive Value | 67 (51-79) | 73 (55-86) | 83 (65-97) |
| Negative Predictive Value | 100 (87-100) | 86 (73-94) | 87 (74-94) |
| All Tumors | |||
| Odds Ratio | 80 (4-1370, P = 0.0024) | 8.6 (3-23, P < 0.0001) | 11 (4-30, P < 0.0001) |
| Sensitivity | 100 (87-100) | 78.1 (60-90) | 78.1 (60-90) |
| Specificity | 55.4 (43-68) | 70.8 (58-81) | 75.4 (63-85) |
| Positive Predictive Value | 52.5 (39-65) | 56.8 (41-71) | 61 (45-75) |
| Negative Predictive Value | 100 (87-100) | 86.8 (74-94) | 87.5 (75-94) |