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Journal of Ophthalmology
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2016
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Article
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Tab 2
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Research Article
Novice Reviewers Retain High Sensitivity and Specificity of Posterior Segment Disease Identification with iWellnessExam
Table 2
Statistics and positive and negative predictive value (PPV and NPV).
Any disease
Retinal disease
Optic nerve disease
PPV
Nonoptometric
80.4%
71.4%
68.8%
PPV
Pre-1st yr, technician
89.5%
84.3%
81.4%
PPV
1st yr student
77.9%
68.6%
58.5%
PPV
3rd yr student
81.9%
73.4%
68.7%
PPV
Expert
99.0%
98.5%
97.8%
PPV
Average of novices
82.4 ± 5.02%
74.4 ± 6.86%
69.3 ± 9.37%
NPV
Nonoptometric
84.8%
86.2%
94.6%
NPV
Pre-1st yr, technician
94.3%
93.5%
98.3%
NPV
1st yr student
94.3%
92.5%
89.2%
NPV
3rd yr student
94.6%
92.1%
96.3%
NPV
Expert
96.9%
97.7%
96.2%
NPV
Average of novices
92.0 ± 4.79%
91.1 ± 3.32%
94.6 ± 3.91%