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Dataset characteristics.
| Participants (female) | 59 (33) | |
|---|---|---|
| Age (years) | M ± SD | 44.7 ± 17.9 |
| Range | 21 - 82 | |
| Number of video-clips (n = 1245) per bolus consistency | Extremely thick | 251 |
| Moderately thick | 282 | |
| Mildly thick | 285 | |
| Slightly thick | 299 | |
| Thin | 128 | |
| Inter-rater agreement (on 1245 videos) | BPM frame | r = 0.951 |
| P3 = 89.08% | ||
| UESC frame | r = 0.996 | |
| P3 = 92.96% |
