Table 1.

Comparison of systolic and diastolic blood pressure measurements by two instruments

	Method	Mean	SD	Min	Max	R Squared	Correlation	CV	CCC	95% CI
Systolic blood pressure	Automated blood pressure monitor	125.9	23.47	86	214
	Mercury-free LED BP device	118.3	22.9	77	189	0.88	0.94	0.07	0.89	(0.86-0.91)
Diastolic blood pressure	Automated blood pressure monitor	74.45	12.2	48	117
	Mercury-free LED BP device	72.62	11.13	51	111	0.75	0.87	0.08	0.85	(0.82-0.88)