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Table 7 Inter-Cardiologist Annotation Variability on QTDB (Annotation Files: q1c vs. q2c)

From: A wavelet-based ECG delineation algorithm for 32-bit integer online processing

  # matched annotations Mean Error ± SD [ms]
Q onset 360 -3.12 ± 14.06
T peak 359 -0.28 ± 26.24
T offset 359 -2.99 ± 39.60