Table 2. Results of medical chart review and positive predictive values.
FES indicates first-ever stroke.
| ICD-10 code | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Total | I60 (Subarachnoid hemorrhage) | I61 (Intracerebral hemorrhage) | I62 (Other nontraumatic intracranial hemorrhage: subdural hemorrhage etc.) | I63 (Cerebral infarction; ischemic stroke) | I64 (Stroke, not specified as hemorrhage or infarction: undetermined stroke) | I65 (Occlusion and stenosis of precerebral arteries) | I66 (Occlusion and stenosis of cerebral arteries) | I67 (Other cerebrovascular diseases: cerebral aneurysm etc.) | I68 (Cerebral amyloid angiopathy) | I69 (Sequelae of cerebrovascular disease) | |
| Reviewed cases (N) | 190 | 0 | 30 | 1 | 46 | 42 | 1 | 1 | 66 | 3 | 0 |
| Confirmed diagnosis | |||||||||||
| Ischemic stroke | 38 | 0 | 1 | 0 | 28 | 9 | 0 | 0 | 0 | 0 | 0 |
| Intracerebral hemorrhage | 25 | 0 | 19 | 0 | 1 | 3 | 0 | 0 | 2 | 0 | 0 |
| Subarachnoid hemorrhage | 2 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| Undetermined stroke | 10 | 0 | 0 | 0 | 4 | 6 | 0 | 0 | 0 | 0 | 0 |
| Positive Predictive Values | |||||||||||
| Ischemic stroke | - | 0.033 | - | 0.609 | 0.214 | - | - | - | - | - | |
| Intracerebral hemorrhage | - | 0.633 | - | 0.022 | 0.071 | - | - | 0.030 | - | - | |
| Subarachnoid hemorrhage | 0.633* | 0.033 | - | - | 0.024 | - | - | - | - | - | |
| Undetermined stroke | - | - | - | 0.087 | 0.143 | - | - | - | - | - | |
* The PPV of I61 (0.633) was assigned.