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Table 2 Precision with coefficient of variation for the DL model and clinicians for patients with repeated LVOTd measurements in the test set

From: Deep learning for automated left ventricular outflow tract diameter measurements in 2D echocardiography

Data groupings (patients)

Mean coefficient of variation for clinicians (95% CI)

Median coefficient of variation for clinicians (IQR)

Mean coefficient of variation for DL predictions (95% CI)

Median coefficient of variation for DL predictions (IQR)

P-values

All data (54 patients)

1.9 (1.6–2.3) %

1.8 (0.8–2.6) %

2.2 (1.6–2.7) %

1.8 (0.8–2.8) %

0.48

PLAX data (26 patients)

1.6 (1.1–2.1) %

1.3 (0.7–2.2) %

2.6 (1.7–3.5) %

2.1 (1.1–2.8) %

0.06

ZPLAX data (30 patients)

2.0 (1.5–2.4) %

1.8 (0.8–2.6) %

1.5 (1.1–2.0) %

1.4 (0.4–2.4) %

0.20

Removing “Low” quality data (37 patients)

1.7 (1.2–2.1) %

1.3 (0.7–2.2) %

2.0 (1.4–2.5) %

1.6 (0.8–2.8) %

0.38