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1Department of Public Health, Yonsei University Graduate School, Seoul, Korea
2Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Korea
3Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
4Institute for Innovation in Digital Healthcare, Yonsei University, Seoul, Korea
5Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
6Department of Neurology, Chungbuk National University Hospital, Cheongju, Korea
7Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Korea
8Division of Cardiology, Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, Korea
9Division of Cardiology, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul, Korea
10Division of Digital Health, Yonsei University Health System, Seoul, Korea
11Department of Medical Records, Severance Hospital, Yonsei University Health System, Seoul, Korea
12Department of Information and Statistics, Research Institute of Natural Science, Gyeongsang National University, Jinju, Korea
13Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
14Institute of Health Insurance & Clinical Research, National Health Insurance Service Ilsan Hospital, Goyang, Korea
15Department of Pediatrics, Yonsei University College of Medicine, Seoul, Korea
16Department of Health Information & Biostatistics, Graduate School of Public Health, Yonsei University, Seoul, Korea
17Department of Biomedical Systems Informatics, Yonsei University College of Medicine, Seoul, Korea
© 2024, Korean Society of Epidemiology
This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Conflict of interest
The authors have no conflicts of interest to declare for this study.
Funding
This work was based on the outcomes of the “2022 National Cardiovascular Diseases Statistics Production System” project, supported by the Korea Disease Control and Prevention Agency (KDCA).
Author contributions
Conceptualization: Lee HH, Lee H, Kim HC. Data curation: Lee HH, Lee H, Kim HC. Formal analysis: Lee HH, Lee H, Kim HC. Funding acquisition: Lee H, Kim HC. Methodology: Lee HH, Baek JH, Yum KS, Kim M, Bae JW, Lee SJ, Kim YD, Lee H, Kim HC. Project administration: Cho M, Lee HH, Lee H, Kim HC. Visualization: Lee HH, Lee H. Writing – original draft: Cho M, Lee HH, Lee H, Kim HC. Writing – review & editing: Baek JH, Yum KS, Kim M, Bae JW, Lee SJ, Kim BK, Kim YA, Yang JH, Kim DW, Kim YD, Pak H, Kim KW, Park S, You SC, Lee H, Kim HC.
Event | Diagnosis codes (ICD-10) | Identification algorithm |
---|---|---|
First | Primary, I63-I64 (+) | (Brain imaging and [episode length ≥3 days or death]) or therapeutic intervention1 or death |
Primary, I63-I64 (-); All, I60-I61 (+) | (Brain imaging and [episode length ≥3 days or death]) or therapeutic intervention1 or death | |
Primary, I63-I64 (-); All, I60-I61 (-); Secondary or lower, I63-I64 (+) | Therapeutic intervention1 and (episode length ≥3 days or death) | |
Recurrent | Primary, I63-I64 (+) | (Brain imaging or therapeutic intervention1) and (episode length ≥3 days or death) |
Primary, I63-I64 (-); Primary, I60-I61 (+) | (Brain imaging or therapeutic intervention1) and (episode length ≥3 days or death) | |
Primary, I60-I61, I63-I64 (-); Secondary or lower, I60-I61, I63-I64 (+) | Therapeutic intervention1 and (episode length ≥3 days or death) |
Hospital type |
First AMI event |
Recurrent AMI event |
||||
---|---|---|---|---|---|---|
Adjudicated | Identified | PPV (95% CI), % | Adjudicated | Identified | PPV (95% CI), % | |
Tertiary | 584 | 617 | 94.7 (92.9, 96.4) | 88 | 108 | 81.5 (74.2, 88.8) |
Secondary | 339 | 368 | 92.1 (89.4, 94.9) | 138 | 184 | 75.0 (68.7, 81.3) |
Primary | 51 | 121 | 42.1 (33.4, 50.9) | 0 | 1 | N/A |
Weighted 11 | - | - | 92.0 (89.5, 94.4) | - | - | 77.8 (71.0, 84.7) |
Weighted 22 | - | - | 92.2 (89.9, 94.6) | - | - | 78.2 (71.4, 85.0) |
Hospital type |
First stroke event |
Recurrent stroke event |
||||
---|---|---|---|---|---|---|
Adjudicated | Identified | PPV (95% CI), % | Adjudicated | Identified | PPV (95% CI), % | |
Tertiary | 458 | 549 | 83.4 (80.3, 86.5) | 137 | 181 | 75.7 (69.4, 81.9) |
Secondary | 335 | 356 | 94.1 (91.7, 96.5) | 154 | 173 | 89.0 (84.4, 93.7) |
Primary | 275 | 392 | 70.2 (65.6, 74.7) | 57 | 90 | 63.3 (53.4, 73.3) |
Weighted 11 | - | - | 88.2 (85.1, 91.3) | - | - | 80.8 (74.8, 86.9) |
Weighted 22 | - | - | 88.1 (85.0, 91.1) | - | - | 81.0 (75.0, 87.0) |