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Fig. 3 | Biology of Sex Differences

Fig. 3

From: Sex differences in umbilical artery Doppler indices: a longitudinal study

Fig. 3

Sex differences in fetal heart rate and umbilical artery Doppler indices adjusted for fetal heart rate. Gestational age-related sex differences in the mean values for umbilical artery (UA) pulsatility index (top left), resistance index (top right), systolic/diastolic ratio (bottom left), all adjusted for fetal heart rate, and fetal heart rate (bottom right) during the second half of pregnancy. The red line represents female, and the blue line represents male. The shaded area indicates significant differences (P < 0.05)

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