TABLE 3.

Estimates of lability of mean arterial pressure by type of hypertension

Parameter		Masked uncontrolled hypertension, n = 16 (43.2%)	Adequately controlled hypertension, n = 21 (56.8%)	P-value
Induction period
Probability of out-of-range ± 20% referenced to
	Home BP	0.35 (0.23, 0.49)	0.32 (0.23, 0.42)	0.738
	Clinic BP	0.30 (0.19, 0.41)	0.32 (0.221, 0.42)	0.810
	Pre-induction BP	0.45 (0.33, 0.57)	0.43 (0.32, 0.53)	0.750
SD, mmHg		16.17 (12.94, 19.39)	13.20 (10.39, 16.01)	0.168
ln(VAR), ln(mmHg2)		5.44 (4.94, 5.93)	4.89 (4.46, 5.33)	0.103
Absolute change
	ARV, mmHg	11.55 (8.64, 14.46)	10.36 (7.82, 12.90)	0.536
	TARV, mmHg min–1	11.55 (8.64, 14.46)	10.36 (7.82-12.90)	0.536
Intraoperative period
Probability of out-of-range ± 20% referenced to
	Home BP	0.36 (0.23, 0.48)	0.24 (0.15, 0.33)	0.122
	Clinic BP	0.29 (0.18, 0.40)	0.30 (0.21, 0.39)	0.910
	Pre-induction BP	0.48 (0.34, 0.63)	0.42 (0.30, 0.55)	0.543
SD, mmHg		12.35 (10.70, 13.99)	9.66 (8.22, 11.10)	0.017
ln(VAR), ln(mmHg2)		4.94 (4.60, 5.28)	4.43 (4.13, 4.73)	0.030
Absolute change
	ARV, mmHg	8.78 (7.40, 10.16)	7.01 (5.80, 8.21)	0.058
	TARV, mmHg min–1	1.68 (1.41, 1.96)	1.34 (1.11, 1.58)	0.066
Postoperative period
Probability of out-of-range ± 20% referenced to
	Home BP	0.20 (0.09, 0.31)	0.17 (0.01, 0.27)	0.662
	Clinic BP	0.15 (0.04, 0.26)	0.21 (0.09, 0.33)	0.454
	Pre-induction BP	0.40 (0.18, 0.63)	0.39 (0.11, 0.61)	0.965
SD, mmHg		7.21 (5.05, 9.38)	4.06 (2.09, 6.05)	0.037
ln(VAR), ln(mmHg2)		3.40 (2.66, 4.14)	2.39 (1.71, 3.07)	0.049
Absolute change
	ARV, mmHg	3.75 (2.52, 4.99)	3.07 (1.98, 4.17)	0.407
	TARV, mmHg min–1	0.67 (0.44, 0.89)	0.54 (0.34, 0.74)	0.378

Values reported as mean (95% CI). P-value from Wald test of a respective regression model. BP – blood pressure, SD – standard deviation, ln(VAR) – natural logarithm of variance, ARV – absolute real variability, TARV – time-averaged absolute real variability