Table 3.
Scintigraphy is significantly less sensitive and less specific for detecting MGD than singular gland disease
| Prelesion test characteristics for all patients | |||
|---|---|---|---|
| MGD lesions | SGD lesions | All lesion | |
| Sensitivity | 61 %* (201/331) | 97 % (503/520) | 83 % (704/851) |
| Specificity | 84 %* (163/193) | 93 % (1450/1560) | 92 % (1613/1753) |
| Accuracy | 69 %* (364/524) | 94 % (1953/2080) | 89 % (2317/2604) |
| Positive predictive value | 87 % (201/231) | 82 % (505/613) | 83 % (704/844) |
| Negative predictive value | 56 %* (163/293) | 99 % (1450/1467) | 92 % (1613/1760) |