Table 3 Sensitivity, specificity, PPV, and NPV of ICD-10-CA with 90-day diagnosis as reference standard
Diagnosis | Coding algorithm n (%) | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|
TIA Prevalence 145 (34.8%) | Main position 79 (18.9%) | 35.9 [28.1, 44.2] | 90.1 [85.9, 93.4] | 65.8 [54.3, 76.1] | 72.5 [67.4, 77.2] |
Any position 99 (23.7%) | 41.4 [33.3, 49.9] | 85.7 [80.9, 89.6] | 60.6 [50.3, 70.3] | 73.3 [68.1, 78.1] | |
Main position +/− Q 122 (29.3%) | 49.7 [41.3, 58.1] | 81.6 [76.5, 86.0] | 59.0 [49.8, 67.8] | 75.3 [69.9, 80.1] | |
Any position +/− Q 151 (36.2%) | 55.9 [47.4, 64.1] | 74.3 [68.6, 79.4] | 53.6 [45.4, 61.8] | 75.9 [70.3, 81.0] | |
Cerebral ischemia Prevalence 273 (65.5%) | Main position 202 (48.4%) | 63.0 [57.0, 68.7] | 79.2 [71.6, 85.5] | 85.2 [79.5, 89.8] | 53.0 [46.1, 59.8] |
Any position 236 (56.6%) | 68.9 [63.0, 74.3] | 67.7 [58.3, 74.3] | 79.7 [74.0, 84.6] | 53.0 [45.5, 60.5] |