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Blood pressure in a cohort of Dunedin seven year olds

A S Simpson, J A Birkbeck, P A Silva

    The New Zealand Medical Journal
    |February 23, 1983
    PubMed

    Insights

    This study found no significant link between socioeconomic status and blood pressure in 7-year-olds. While boys had slightly higher systolic blood pressure, this difference vanished after accounting for height.

    Area of Science:

    • Pediatrics
    • Cardiovascular Health
    • Anthropometry

    Background:

    • Establishing normative blood pressure values in children is crucial for identifying hypertension.
    • Understanding the relationship between anthropometric measures and blood pressure in early childhood is important for long-term health.
    • Socioeconomic status may influence health outcomes, including cardiovascular parameters.

    Purpose of the Study:

    • To determine reference values for blood pressure in 7-year-old children.
    • To investigate the associations between blood pressure, anthropometric data, and socioeconomic status in this age group.
    • To explore sex differences in blood pressure and their relationship with body size.

    Main Methods:

    • Cross-sectional study involving 982 children around their seventh birthday.
    • Measurements included blood pressure (systolic, diastolic phase IV, and V), pulse rate, and anthropometric data (weight, height, arm circumference, triceps skinfold).
    • Socioeconomic status was also recorded and analyzed in relation to blood pressure.

    Main Results:

    • Means, standard deviations, and 95th centiles for systolic and diastolic blood pressure were reported.
    • No significant differences in blood pressure were observed across different socioeconomic levels.
    • Systolic blood pressure was higher in boys than girls, but this difference was not significant after adjusting for height.
    • Small but significant correlations were found between blood pressure and pulse rate, weight, height, and various obesity indices.
    • After adjusting for weight, associations between systolic blood pressure and height, BMI, and arm circumference were no longer significant.

    Conclusions:

    • Normative blood pressure data for 7-year-olds were established.
    • Socioeconomic status did not significantly impact blood pressure in this cohort.
    • Height is a significant factor in sex-based differences in systolic blood pressure.
    • While anthropometric measures show correlations with blood pressure, these relationships are influenced by body weight.

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