[Prevalence of white-coat hypertension and masked hypertension in the general population, through home blood pressure measurement]. / Prevalencia de la hipertensión de bata blanca e hipertensión enmascarada en la población general, mediante automedición domiciliaria de la presión arterial.

OBJECTIVE: To determine the prevalence of white-coat hypertension (WCH) and masked hypertension (MH) in the general population, by means of home blood pressure measurement (HBPM). DESIGN: Cross-sectional, descriptive study. SETTING: Four primary care centres. PARTICIPANTS: A sample of 1400 individuals over 18 years old, selected from the Municipal Register of Inhabitants (Huelva, Spain) and randomised and stratified by age and gender. MAIN MEASUREMENTS: Two blood pressure (BP) measurements in clinic (CBP) and 12 measurements in a week of BP by HBPM were performed (OMRON 705-CP). Pressure was seen as normal when CBP means were <140/90 mm Hg and HBPM was <135/85 mm Hg. WCH was defined as when CBP was >140/90 mm Hg and HBPM <135/85 mm Hg, and hypertension when CBP was >140 mm Hg and HBPM >135/85 mm Hg or patients were in treatment for hypertension. MH was when CBP was <140/90 mm Hg and at home was >135 mm Hg and/or 85 mm Hg. RESULTS: A total of 1153 individuals (82.35% of the sample) with mean age of 45.4 (SD, 16.1) were included: 560 men and 593 women. The prevalence of MH was 8.9% (CI+/-1.6) in the general population and 9.8% (CI+/-3.2) in individuals with hypertension. WCH prevalence was 3.6% (CI+/-1.05) overall and 12.8% (CI+/-3.6) in hypertense patients, with its prevalence increasing steadily as age groups rose (P = .001). CONCLUSIONS: The prevalence of WCH in the general population is low, whereas the prevalence of MH is high.

Prevalencia de la hipertensión de bata blanca e hipertensión enmascarada en la población general, mediante automedición domiciliaria de la presión arterial / Prevalence of white-coat hypertension and masked hypertension in the general population, through home blood pressure measurement

Objetivo. Determinar la prevalencia de hipertensión de bata blanca (HBB) e hipertensión enmascarada (HE) en población general, mediante automedición de presión arterial (AMPA) en la consulta y el domicilio. Diseño. Estudio descriptivo, transversal, multicéntrico y aleatorizado. Emplazamiento. Cuatro centros de atención primaria. Participantes. Se seleccionó, mediante muestreo aleatorio estratificado por edad y sexo, una muestra de 1.400 individuos > 18 años del Padrón Municipal de Habitantes (Huelva). Mediciones principales. Fueron citados en sus centros de salud, realizándose 2 mediciones de presión arterial (PA) en consulta y 12 mediciones domiciliarias durante una semana mediante AMPA (OMRON 705-CP). Se consideró normotensión cuando las PA medias en consulta eran 140 y/o > 90 mmHg en la consulta y 135 y/o 85 mmHg. Resultados. Se incluyó a 1.153 individuos (82,35% de la muestra), con una edad media de 45,4 ± 16,1 años, 560 varones y 593 mujeres. La HE fue del 8,9% (IC ± 1,6%) globalmente y del 9,8% (IC ± 3,2) de los hipertensos. Había HBB en el 3,6% (IC ± 1,05) globalmente y el 12,8 % (IC ± 3,6) de los hipertensos, y su prevalencia aumentó progresivamente al incrementar los grupos de edad (p = 0,001). Conclusiones. La prevalencia de HBB en la población general es baja, mientras que la de HE es elevada

Objective. To determine the prevalence of white-coat hypertension (WCH) and masked hypertension (MH) in the general population, by means of home blood pressure measurement (HBPM). Design. Cross-sectional, descriptive study. Setting. Four primary care centres. Participants. A sample of 1400 individuals over 18 years old, selected from the Municipal Register of Inhabitants (Huelva, Spain) and randomised and stratified by age and gender. Main measurements. Two blood pressure (BP) measurements in clinic (CBP) and 12 measurements in a week of BP by HBPM were performed (OMRON 705-CP). Pressure was seen as normal when CBP means were 140/90 mm Hg and HBPM 140 mm Hg and HBPM >135/85 mm Hg or patients were in treatment for hypertension. MH was when CBP was 135 mm Hg and/or 85 mm Hg. Results. A total of 1153 individuals (82.35% of the sample) with mean age of 45.4 (SD, 16.1) were included: 560 men and 593 women. The prevalence of MH was 8.9% (CI±1.6) in the general population and 9.8% (CI±3.2) in individuals with hypertension. WCH prevalence was 3.6% (CI±1.05) overall and 12.8% (CI±3.6) in hypertense patients, with its prevalence increasing steadily as age groups rose (P=.001). Conclusions. The prevalence of WCH in the general population is low, whereas the prevalence of MH is high