Table 3.

Multivariate linear regression analyses of systolic and diastolic blood pressure difference by random-zero and standard mercury sphygmomanometers

	Systolic		Diastolic
Study variable
	Difference* (95% CI)	p-value	Difference* (95% CI)	p-value
Age, year	−0.05 (−0.08, −0.01)	0.007	−0.02 (−0.05, −0.01)	0.21
Men	0.58 (−0.09, 1.27)	0.09	−0.21 (−0.80, 0.44)	0.58
Body mass index, kg/m2	0.13 (0.02, 0.24)	0.017	0.10 (0.00, 0.20)	0.05
Physical activity, MET/day	0.02 (0.01, 0.04)	0.01	0.01 (−0.01, 0.02)	0.38
Average blood pressure, mm Hg	0.02 (−0.00, 0.05)	0.06	0.00 (−0.03, 0.03)	0.86

^*Differences are presented as mean random-zero blood pressure values minus mean standard mercury blood pressure values.