Table 4 Validation of diagnostic codes for stroke
From: Validation of diagnostic codes of major clinical outcomes in a National Health Insurance database
Ischemic stroke | Total | True | False | PPV (%) | Sensitivity (%) | Specificity (%) |
|---|---|---|---|---|---|---|
Hospitalization + primary diagnostic code | 200 (100) | 181 (90.5) | 19 (9.5) | 90.5 | – | – |
Hospitalization + primary diagnostic code + imaging diagnosisa | 179 (100) | 165 (92.2) | 14 (7.8) | 92.2 | 91.2 | 26.3 |
Hospitalization + primary diagnostic code + prescriptionb | 181 (100) | 169 (93.4) | 12 (6.6) | 93.4 | 93.4 | 36.8 |
Hospitalization (over 3 days) + primary diagnostic code + imaging diagnosis | 170 (100) | 157 (92.4) | 13 (7.6) | 92.4 | 86.7 | 31.6 |
Hospitalization (over 3 days) + primary diagnostic code + prescription | 173 (100) | 163 (94.2) | 10 (5.8) | 94.2 | 90.1 | 47.4 |