Table 2 Cohort demographics and statistics for non-gated model.
From: Automated coronary calcium scoring using deep learning with multicenter external validation
Characteristic | Retrospective non-gated coronary CT Cohort | External non-gated validation cohorts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Stanford | MESA | |||||||||||
Training | Validation | Test | Total | Training | Validation | Test | Total | Site 1 | Site 2 | Site 3 | Site 4 | |
Patient sex | ||||||||||||
M | 87 | 11 | 24 | 122 | 67 | 11 | 21 | 99 | 22 | 53 | 46 | 61 |
F | 64 | 11 | 18 | 93 | 59 | 11 | 24 | 94 | 0 | 22 | 25 | 74 |
N/Aa | 0 | 0 | 0 | 0 | 37 | 1 | 1 | 39 | 0 | 0 | 0 | 0 |
No. of exams | 151 | 22 | 42 | 215 | 163 | 23 | 46 | 232 | 22 | 75 | 71 | 135 |
Mean age (range [± standard deviation]) | 60.9 (18–80[±9.8]) | 60.6 (31–82[±12.1]) | 60.6 (47–73[±7.5]) | 60.8 (18–82[±9.6]) | 70.0 (54–111[±9.0]) | 65.0 (55–80[±7.3]) | 65.9 (55–91[±9.0]) | 67.8 (54–111[±9.0]) | 64.6 (38–76[±10.1] | 62.4 (31–88[±13.3]) | 66.5 (43–83[±9.0]) | N/A |
Median time intervalb | 8.0 | 8.2 | 3.3 | 6.2 | 0.0 | 0.0 | 0.0 | 0.0 | 2.7 | 1.0 | 5.6 | 2.4 |
Scanner | ||||||||||||
GE | 55 | 9 | 20 | 84 | 40 | 40 | 0 | 0 | 22 | 39 | 0 | 131 |
Siemens | 90 | 13 | 20 | 123 | 123 | 123 | 23 | 46 | 0 | 11 | 71 | 3 |
Other | 6 | 0 | 2 | 8 | 0 | 0 | 0 | 0 | 0 | 25 | 0 | 1 |
CAC Score Bucket | ||||||||||||
I | 59 | 12 | 18 | 89 | 48 | 6 | 7 | 61 | 4 | 22 | 28 | 52 |
II | 12 | 5 | 3 | 20 | 12 | 3 | 4 | 19 | 1 | 4 | 4 | 11 |
III | 35 | 3 | 5 | 43 | 38 | 3 | 14 | 55 | 3 | 17 | 13 | 22 |
IV | 24 | 1 | 10 | 35 | 34 | 7 | 13 | 54 | 4 | 16 | 14 | 32 |
V | 21 | 1 | 6 | 28 | 30 | 4 | 8 | 42 | 11 | 16 | 12 | 18 |
