Abstract:
BACKGROUND:The association of adiposity during childhood with future risk of elevated blood pressure (BP) in South Asian children is not known. We aimed to investigate the relationship between waist circumference (WC) and body mass index (BMI) with BP over a 2-year period, independent of the baseline BP. METHODS:We analyzed data on children aged 5-14 years who participated in the Control of Blood Pressure and Risk Attenuation (COBRA) trial in Karachi, Pakistan. Separate multivariable models were built for WC and BMI using generalized estimation equations to determine the association between the baseline and changes in adiposity with the primary outcome of increase in systolic BP (SBP) over 2 years of follow-up. RESULTS:We assessed 1,675 children: 51% were boys. At 2 years, 1,278 (76.5%) were available for follow-up. On multivariate analysis, WC at baseline (β (95% confidence interval (CI))) = (0.20 (0.13, 0.29), for each 1 cm increase) and change in WC from baseline to follow-up (0.24 (0.16, 0.34), for each 1 cm increase) were associated with increase in SBP. Similarly BMI at baseline (0.54 (0.33, 0.75) and change in BMI 1.32 (1.06, 1.59), for each 1 kg/m(2) increase) were associated with change in SBP. Categorical expression of adiposity yielded consistent results. CONCLUSIONS:Baseline adiposity and increase in adiposity, both, are associated with increase in BP, independent of the baseline level of BP in South Asian children. Both WC and BMI can be used to identify children at high risk of increase in BP.
journal_name
Am J Hypertensjournal_title
American journal of hypertensionauthors
Almas A,Jafar THdoi
10.1038/ajh.2011.67subject
Has Abstractpub_date
2011-08-01 00:00:00pages
876-80issue
8eissn
0895-7061issn
1941-7225pii
ajh201167journal_volume
24pub_type
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