TABLE 5.

Univariate correlation of % blood pressure dip, nocturnal systolic blood pressure and non-dipping status with biomarkers of potential contributory pathways

	% Blood pressure dip		Nocturnal systolic blood pressure		Non-dipping status
Variable	Correlation coefficient	p-value	Correlation coefficient	p-value	Unstandardised β (95% CI)	Standardised β	p value
Urinary norepinephrine	−0.242	0.087	0.387	0.007	1.006 (1.000–1.013)	0.006	0.058
Angiotensin II	0.078	0.539	−0.082	0.533	0.045 (0.00–1688.09)	−3.096	0.564
Renin	0.077	0.545	0.052	0.691	1.000 (0.999–1.000)	0.000	0.398
RHI	−0.100	0.482	−0.004	0.981	1.277 (0.425–3.544)	0.204	0.706
Endothelin 1	0.099	0.438	0.025	0.849	0.775 (0.584–1.027)	−0.255	0.076
CRP	−0.213	0.092	0.156	0.235	1.044 (0.898–1.214)	0.043	0.577
IL-6	0.022	0.864	0.064	0.626	1.115 (0.906–1.374)	0.109	0.304
TNF-α	0.147	0.248	−0.058	0.661	1.003 (0.939–1.072)	0.003	0.923

RHI: reactive hyperaemia index; CRP: C-reactive protein; IL-6: interleukin-6; TNF-α: tumour necrosis factor-α.