Table 2.
Comparison of sensitivity, specificity, and accuracy in the detection of PHPT via three methods (%)
| Sensitivity | Specificity | Accuracy | |
|---|---|---|---|
| US | 93.0 (93/100) | 25.0 (2/8) | 88.0 (95/108) |
| Tc-99m MIBI SPECT/CT | 63.0 (63/100)a | 62.5 (5/8) | 63.0 (68/108)a |
| US+Tc-99m MIBI SPECT/CT | 96.0 (96/100)bc | 12.5 (1/8) | 97.0 (97/108)bc |
| 2 | 49.554 | 4.875 | 30.648 |
| P | <0.001 | 0.087 | <0.001 |
There were significant differences in sensitivity (2=49.554, P<0.001) and accuracy (2=30.648, P<0.001) among the three groups, and pairwise comparison was performed for row x column segmentation
aCompared with US, the differences of sensitivity (2=26.224, P<0.001) and accuracy (2=18.227, P<0.001) were statistically significant
bCompared with Tc-99m MIBI SPECT/CT, the differences were statistically significant (2=33.410, P<0.001 for sensitivity; 2=21.587, P<0.001 for accuracy)
cCompared with US, there were no significant differences (P=0.352 and P=0.665, respectively). There were no statistically significant differences in specificity between the three methods (2=4.875, P=0.087)