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. Author manuscript; available in PMC: 2020 Mar 2.
Published in final edited form as: J Intensive Care Med. 2019 Jul 28;34(10):851–857. doi: 10.1177/0885066619866172

Table 4.

Accuracy of ICD-9 AF Compared to Manual Adjudication

Manual Adjudication
AF No AF Total
ICD-9 defined AF 56 15 71
No AF 2 69 71
Total 58 84 142

Abbreviations: AF, atrial fibrillation; CI, confidence interval; PPV, Positive predictive value. Sensitivity = 97% (95% CI: 88% – 100%), specificity = 82% (95% CI: 74% – 90%), PPV = 79%.