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. Author manuscript; available in PMC: 2016 Jun 1.
Published in final edited form as: Amyotroph Lateral Scler Frontotemporal Degener. 2015 May 6;16(0):224–229. doi: 10.3109/21678421.2014.988161

Table 4.

Comparison of medical records and death certificates, among hospital-identified cases that had died at the time of analysis, for which we obtained medical records, a) excluding and b) including clinically suspect ALS subjects as true ALS cases.

a)
Death Certificates Hospital Discharges
ALS No ALS

ALS 105 21
No ALS 29 18

b)
Death Certificates Hospital Discharges
ALS No ALS

ALS 125 1
No ALS 35 12

Sensitivity = 78.4%, PPV = 83.3%,

Specificity = 46.2%

Sensitivity = 78.1%, PPV = 99.2%,

Specificity = 92.3%