Table I.

Reproducibility of Measurements

Systolic Blood Pressure
	First Participation (Means±SD)	Second Participation (Means±SD)	Correlation (r)
Prestudy	136.1±15.7	132.0±13.2 (NS)	0.49*
Prediuretic	143.4±13.8	146.1±14.8 (NS)	0.48*
Postdiuretic	129.1±13.5	130.0±18.2 (NS)	0.70‡
Response	−14.2±16.4	−16.0±16.5 (NS)	0.61†
Diastolic Blood Pressure
Prestudy	88.5±9.3	87.1±8.7 (NS)	0.54†
Prediuretic	95.5±7.5	96.1±6.3 (NS)	0.04 (NS)
Postdiuretic	88.4±10.5	89.5±10.8 (NS)	0.83‡
Response	−7.1±11.8	−6.6±8.6 (NS)	0.64†
NS=not significant; *p<0.05; †p<0.01; ‡p<0.001