Sensitivity and specificity of the two observers' assessments compared with the gold standard, expressed as percentages
| Observer 1 | Observer 2 | |||||
|---|---|---|---|---|---|---|
| Method | Sensitivity | Specificity | Sensitivity | Specificity | ||
| Stereo viewer at slit lamp eyepieces | 33 | 90 | 33 | 85 | ||
| Stereo viewer | 50 | 97 | 33 | 92 | ||
| Optical/mechanical comparison | 50 | 87 | 67 | 87 | ||
| Computerised chronoscopy | 83 | 92 | 83 | 87 | ||