Background: This study was performed to determine the blood pressure (BP) percentile curves by height, as well as to assess the prevalence of high BP and its influencing factors among children in the first national survey in this field in Iran.
Design: A multicentre national cross-sectional survey.
Methods: This study was performed in 23 provinces among a representative sample of 21,111 students aged 6-18 years.
Background/aim: To determine the association of physical activity and the metabolic syndrome in a large national-representative sample of children.
Methods: This study was performed in 2003-2004 on 4,811 school students aged 6-18 years, selected by multi-stage random cluster sampling from six provinces in Iran. We assessed the level of physical activity using a standardized questionnaire, and categorized it to the tertiles.
Background: For the first time in Iran, and to the best of our knowledge in Asia, we assessed the anthropometric indices most closely correlated to cardiovascular disease (CVD) risk factors in a large nationally representative sample of children and adolescents to be used as a simple tool for identifying those at risk.
Methods: This multi-center study was performed among a representative sample of 4811 school students (2248 boys and 2563 girls) aged 6-18 years, as part of the baseline survey of a national surveillance system. Anthropometric indices and CVD risk factors were measured using standard protocols, and their correlation was analyzed by using Receiver Operator Characteristic (ROC) curves and partial correlation.