title: Long-term reproducibility of home vs. office blood pressure in children and adolescents: the Arsakeion school study.
abstract: This study compared the long-term reproducibility of home blood pressure (BP) in comparison with office BP in children and adolescents. Forty-eight subjects (27 boys, mean age 11.3+/-3.1 (s.d.) years) recruited from the Arsakeion school study because of elevated office and/or home BP were assessed with office (1 visit, mercury sphygmomanometer) and home BP measurements (3 days, electronic devices) in two assessments 17+/-4.9 months apart (range 10-26 months). Home and office BP were compared on the basis of the following criteria: (a) s.d. of mean BP; (b) s.d. of differences; (c) variation coefficient (CV); (d) concordance correlation coefficient (CCC); (e) test-retest correlations; (f) correlation with ambulatory BP. (a) The s.d. of mean home BP was lower than that of office BP in both the initial (home BP 9.1/7.1 mm Hg, systolic/diastolic; office BP 13.1/8.0 mm Hg) and the second assessment (9.2/6.0 and 14.9/11.5 respectively). (b) The s.d. of differences was lower for home BP (8.3/6.5 mm Hg, systolic/diastolic) than for office BP (13.9/10.7 mm Hg). (c) The CV of home BP (5.3/6.6, systolic/diastolic) was lower than that of office BP (8.2/10.9). (d) The CCC of home BP (0.54/0.50, systolic/diastolic) was higher than that of office BP (0.51/0.41). (e) Test-retest correlations were closer for home BP (r=0.58/0.52, systolic/diastolic) than for office BP (0.51/0.44). (f) Awake ambulatory BP was more closely associated with home (r=0.77/0.40, systolic/diastolic) than with office BP (0.65/0.24). These data suggest that in children and adolescents the long-term reproducibility of home BP is superior to that of office measurements.
authors.affiliation: Third University Department of Medicine, Hypertension Center, Sotiria Hospital, University of Athens, Athens, Greece. gstergi@med.uoa.gr
authors.forename: George S
authors.initials: GS
authors.lastname: Stergiou
authors.forename: Efthimia G
authors.initials: EG
authors.lastname: Nasothimiou
authors.forename: Periklis P
authors.initials: PP
authors.lastname: Giovas
authors.forename: Vayia C
authors.initials: VC
authors.lastname: Rarra
mesh_terms: D000293:Adolescent; D001795:Blood Pressure Determination / Q000295:instrumentation / Q000379:methods*; D018660:Blood Pressure Monitoring, Ambulatory; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D011446:Prospective Studies; D015203:Reproducibility of Results