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. 2021 Mar 10;137(4):673–681. doi: 10.1097/AOG.0000000000004322

Fig. 4. Bland-Altman plot showing comparable accuracy between the fetal heartbeat monitor and the cardiotocograph. The difference in mean fetal heart rates over five time points (n=41).

Fig. 4.

Porter. Assessing a Home Fetal Heart Rate Monitor. Obstet Gynecol 2021.