Table 2.

Ambulatory blood pressure measurements.

	Controls (n = 56)	Gestational hypertension (n = 55)	Preeclampsia (n = 50)	p
24-h ambulatory blood pressure monitoring
24-h
SBP (mmHg)	108 ± 6	123 ± 7a	121 ± 8b	<0.001
DBP (mmHg)	67 ± 4	76 ± 5a	74 ± 4b	<0.001
Daytime
SBP (mmHg)	113 ± 7	128 ± 9	125 ± 8	<0.001*
DBP (mmHg)	70 ± 4	79 ± 5a	77 ± 6b	<0.001
Nighttime
SBP (mmHg)	100 ± 5	111 ± 6a	110 ± 7b	<0.001
DBP (mmHg)	61 ± 4	70 ± 5a	68 ± 5c	<0.001
Nocturnal reduction rate (%)
SBP (%)	11.7 ± 3.1	13.1 ± 3.8	12.2 ± 3.4	0.100
DBP (%)	12.7 ± 3.4	11.5 ± 2.9	11.6 ± 3.0	0.084
SD
24 h SBP	8.7 ± 1.6	17.3 ± 4.1	14.7 ± 3.5	<0.001**
CV
24 h SBP	8.0 ± 1.5	14.1 ± 2.5	12.1 ± 2.3	<0.001**
Clinic blood pressure measurement
SBP (mmHg)	116 ± 6	133 ± 9a	130 ± 7b	<0.001
DBP (mmHg)	72 ± 4	83 ± 6	80 ± 6	<0.001*
SD	8.0 ± 1.9	15.3 ± 3.3	12.8 ± 3.1	<0.001**
CV	7.6 ± 1.3	13.1 ± 2.3	11.0 ± 2.0	<0.001**

DBP diastolic blood pressure, CV coefficient of variation, SBP systolic blood pressure, SD standard deviation.

*p < 0.05 for all comparisons, **p < 0.01 for all comparisons.

^ap  <  0.01 for controls vs. gestational hypertension.

^bp  <  0.01 for controls vs. preeclampsia.

^cp  <  0.01 for gestational hypertension vs. preeclampsia.