. Author manuscript; available in PMC: 2013 Jul 17.

Published in final edited form as: Hypertens Res. 2009 Mar 27;32(5):404–410. doi: 10.1038/hr.2009.32

Table 4.

Tracking coefficients of ABP and dipping by family history of essential hypertension

	Negative on family history of EH		Positive on family history of EH
	Tracking coefficient (95% CI)	P-value	Tracking coefficient (95% CI)	P-value
ABP ^a
Daytime DBP	0.40 (0.28, 0.53)	<0.001	0.52 (0.46, 0.58)	<0.001
Night-time DBP	0.18 (0.06, 0.30)	<0.01	0.32 (0.26, 0.38)	<0.001
Dipping ^a
SBP (day–night)	0.03 (−0.09, 0.15)	NS	0.16 (0.11, 0.22)	<0.001
DBP (day–night)	0.02 (−0.10, 0.14)	NS	0.12 (0.06, 0.18)	<0.001
SBP ((day–night)/day)	0.01 (−0.10, 0.13)	NS	0.16 (0.10, 0.21)	<0.001
DBP ((day–night)/day)	−0.01 (−0.12, 0.10)	NS	0.10 (0.04, 0.16)	0.001

Abbreviations: ABP, ambulatory blood pressure; DBP, diastolic blood pressure; EH, essential hypertension; NS, not significant; SBP, systolic blood pressure.

Tracking coefficient is the standardized regression coefficient.

All the tracking coefficients were adjusted for age, gender and ethnicity.