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Fig. 3 | SpringerPlus

Fig. 3

From: Electrocardiography versus photoplethysmography in assessment of maternal heart rate variability during labor

Fig. 3

Disagreement (dAB) between the MHR variability indices obtained with ECG and PPG, for linear time-domain indices (first row), linear frequency-domain indices (second row), entropy indices (third row) and Poincaré plot indices (fourth row). Disagreement was assessed for the initial (H1, dot) and final (H2, cross) 10-min tracing segments (error bars represent the 95 % CI). Note that the zero value corresponds to the minimum disagreement (maximum agreement)

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