Table 5.

Estimated coefficients and correspondent 95% CI of the regression model used to predict the pulsatility index before and after spinal anaesthesia within each artery (UtA or U), adjusted according to the hypertensive status

Variables	Coefficient	95% CI
Intercept	0.773	(0.757, 0.789)*
After (vs Before) anaesthetic blockade	-0.016	(-0.030, -0.002)*
U (vs UtA)	0.034	(0.012, 0.056)*
Hypertensive (vs Non-Hypertensive) women	0.096	(0.053, 0.139)*
U x Hypertensive women	-0.081	(-0.140, -0.022)*
U x After anaesthetic blockade	0.019	(0.001, 0.037)*
After anaesthetic blockade x Hypertensive women	-0.145	(-0.182, -0.108)*
After anaesthetic blockade x Hypertensive women x U	0.153	(0.104, 0.202)*

*Significance designated at p < 0.05; CI, confidence interval; UtA, uterine artery; U, umbilical artery; PI, pulsatility index.