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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.
Event | Diagnosis codes (ICD-10) | Identification algorithm |
---|---|---|
First | Primary, I21-I23 (+) | ECG or cardiac enzyme test or CAG or PCI/CABG or death |
Primary, I21-I23 (-); Secondary or lower, I21-I23 (+) | CAG or PCI/CABG | |
Recurrent | All, I21-I23 (+) | PCI/CABG and (episode length ≥3 days or death) |
Event | Diagnosis codes (ICD-10) | Identification algorithm |
---|---|---|
First | Primary, I63-I64 (+) | (Brain imaging and [episode length ≥3 days or death]) or therapeutic intervention |
Primary, I63-I64 (-); All, I60-I61 (+) | (Brain imaging and [episode length ≥3 days or death]) or therapeutic intervention |
|
Primary, I63-I64 (-); All, I60-I61 (-); Secondary or lower, I63-I64 (+) | Therapeutic intervention |
|
Recurrent | Primary, I63-I64 (+) | (Brain imaging or therapeutic intervention |
Primary, I63-I64 (-); Primary, I60-I61 (+) | (Brain imaging or therapeutic intervention |
|
Primary, I60-I61, I63-I64 (-); Secondary or lower, I60-I61, I63-I64 (+) | Therapeutic intervention |
Hospital type | Center | No. of cases reviewed |
|
---|---|---|---|
AMI | Stroke | ||
Tertiary | A | 421 | 428 |
B | 20 | 20 | |
C | 108 | 103 | |
D | 86 | 89 | |
E | 90 | 90 | |
Subtotal | 725 | 730 | |
Secondary | F | 90 | 99 |
G | 40 | 36 | |
H | 39 | 41 | |
I | 41 | 33 | |
J | 40 | 40 | |
K | 120 | 118 | |
L | 30 | 28 | |
M | 49 | 45 | |
N | 70 | 59 | |
O | 33 | 30 | |
Subtotal | 552 | 529 | |
Primary | P | 3 | 17 |
Q | 17 | 140 | |
R | 23 | 36 | |
S | 31 | 18 | |
T | 12 | 168 | |
U | 17 | 22 | |
V | 7 | 32 | |
W | 2 | 21 | |
X | 10 | 28 | |
Subtotal | 122 | 482 | |
Total | 1,399 | 1,741 |
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 1 |
- | - | 92.0 (89.5, 94.4) | - | - | 77.8 (71.0, 84.7) |
Weighted 2 |
- | - | 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 1 |
- | - | 88.2 (85.1, 91.3) | - | - | 80.8 (74.8, 86.9) |
Weighted 2 |
- | - | 88.1 (85.0, 91.1) | - | - | 81.0 (75.0, 87.0) |
ICD-10, International Classification of Diseases, 10th revision; ECG, electrocardiogram; CAG, coronary angiography; PCI, percutaneous coronary intervention; CABG, coronary artery bypass grafting.
ICD-10, International Classification of Diseases, 10th revision. Including intravenous thrombolysis, endovascular treatment, coil embolization, or other specific therapeutic interventions for stroke.
AMI, acute myocardial infarction.
PPV, positive predictive value; AMI, acute myocardial infarction; CI, confidence interval; N/A, not available. Based on first-visit hospital within an episode. Based on highest-level hospital within an episode.
PPV, positive predictive value; CI, confidence interval. Based on first-visit hospital within an episode. Based on highest-level hospital within an episode.