Table 3.

Multiple linear regression analysis associated with blood pressure variability (CV of SBP)

	Unstandardized coefficients (B)	Standard error	95% Confidence interval for B		P value
			Lower	Upper
(Intercept)	4.043	0.1423	3.764	4.322	<0.001
Female	1.079	0.0236	1.033	1.125	<0.001
Male	Reference
Age 80+	2.807	0.0978	2.615	2.998	<0.001
Age 70–79	1.846	0.0799	1.690	2.003	<0.001
Age 60–69	1.172	0.0761	1.023	1.321	<0.001
Age 50–59	0.556	0.0755	0.408	0.704	<0.001
Age 40–49	0.032	0.0761	−0.117	0.181	0.677
Age 30–39	−0.196	0.0791	−0.351	−0.042	0.013
Age 18–29	Reference
Country (US)	0.452	0.0511	0.351	0.552	<0.001
Country (other)	0.356	0.0524	0.254	0.459	<0.001
Country (JP)	0.235	0.0815	0.076	0.395	0.004
Country (IT)	0.431	0.0702	0.293	0.568	<0.001
Country (GB)	−0.157	0.0653	−0.285	−0.029	0.016
Country (FR)	0.159	0.0610	0.039	0.278	0.009
Country (DE)	−0.206	0.0540	−0.312	−0.100	<0.001
Country (CH)	−0.133	0.0665	−0.263	−0.003	0.045
Country (CA)	Reference
Mean SBP	0.018	0.0013	0.016	0.021	<0.001
Mean DBP	0.006	0.0018	0.003	0.010	<0.001

Abbreviations: CA, Canada; CH, Switzerland; DBP, diastolic blood pressure; DE, Germany; FR, France; GB, United Kingdom; IT, Italy; JP, Japan; SBP, systolic blood pressure.