Table 3 Sensitivity, specificity, positive predictive value, and negative predictive value for EHR diagnoses compared to Medicare reference standard diagnoses for patients seen at least once and at least twice

Diagnosis (One-Visit)

Sensitivity (One-Visit)

Specificity (One-Visit)

Positive Predictive Value (One-Visit)

Negative Predictive Value (One-Visit)

Neurodegenerative Disease

61.3%

99.0%

90.8%

94.1%

Dementia

56.1%

99.0%

88.0%

94.6%

Parkinson Disease

76.1%

99.7%

86.9%

99.4%

Diagnosis (Two-Visit)

Sensitivity (Two-Visit)

Specificity (Two-Visit)

Positive Predictive Value (Two-Visit)

Negative Predictive Value (Two-Visit)

Neurodegenerative Disease

67.1%

98.7%

88.6%

95.2%

Dementia

61.1%

98.5%

81.3%

95.9%

Parkinson Disease

81.5%

99.7%

86.1%

99.6%