Sociodemographic patterns of urine sodium excretion and its association with hypertension in Chile: a cross-sectional analysis

Petermann-Rocha, Fanny, Sillars, Anne, Brown, Rosemary, Sweeney, Lauren, Troncoso, Claudia, García-Hermoso, Antonio, Leiva, Ana María, Martínez, María Adela, Diaz-Martínez, Ximena, Poblete-Valderrama, Felipe, Garrido-Mendez, Alex, Cataldo, Ximena, Gonzalez, José Iturra, Salas, Carlos, Lara, José, Gray, Stuart R and Celis-Morales, Carlos (2019) Sociodemographic patterns of urine sodium excretion and its association with hypertension in Chile: a cross-sectional analysis. Public Health Nutrition, 22 (11). pp. 2012-2021. ISSN 1368-9800

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The aim of the study was to determine the main factors (sociodemographic, anthropometric, lifestyle and health status) associated with high Na excretion in a representative population of Chile.

Na excretion (g/d), a valid marker of Na intake, was determined by urine analysis and Tanaka’s formulas. Blood pressure was measured by trained staff and derived from the mean of three readings recorded after 15 min rest. The associations of Na excretion with blood pressure and the primary correlates of high Na excretion were determined using logistic regression.

Chileans aged ≥15 years.

Participants (n 2913) from the Chilean National Health Survey 2009–2010.

Individuals aged 25 years or over, those who were obese and those who had hypertension, diabetes or metabolic syndrome were more likely to have higher Na excretion. The odds for hypertension increased by 10·2 % per 0·4 g/d increment in Na excretion (OR=1·10; 95 % CI 1·06, 1·14; P < 0·0001). These findings were independent of major confounding factors.

Age, sex, adiposity, sitting behaviours and existing co-morbidities such as diabetes were associated with higher Na excretion levels in the Chilean population. These findings could help policy makers to implement public health strategies tailored towards individuals who are more likely to consume high levels of dietary salt.

Item Type: Article
Uncontrolled Keywords: Hypertension, Sodium excretion, Lifestyle, Risk factors
Subjects: B400 Nutrition
Department: Faculties > Health and Life Sciences > Applied Sciences
Depositing User: Elena Carlaw
Date Deposited: 06 Mar 2019 11:50
Last Modified: 31 Jul 2021 19:49

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