Natural language processing-based analysis of all radiology reports from hospital 1
| Time Period | Total No. of Neuroimaging Studies Performed (CT/MRI) | Estimated No. of Neuroimaging Studies with ASIS Detected (% of Total) | Total No. of Patients Undergoing Neuroimaging | Estimated No. of Patients with ASIS Detected (% of Total) | No. of Neuroimaging Studies per Patient |
|---|---|---|---|---|---|
| March-April 2020 (COVID-19 pandemic) | 5709 | 428 (7.4%) | 3977 | 231 (5.8%) | 1.4 |
| March-April 2017–2019a | 8949 | 541 (6.0%) | 6312 | 304 (4.8%) | 1.4 |
| 2019 | 9403 | 586 (6.2%) | 6770 | 313 (4.6%) | 1.4 |
| 2018 | 9086 | 523 (5.8%) | 6417 | 302 (4.7%) | 1.4 |
| 2017 | 8357 | 515 (6.2%) | 5750 | 297 (5.1%) | 1.5 |
↵a Three-year average.