International Journal of Epidemiology 2002;31:1043-1051
© International Epidemiological Association 2002
Cardiovascular Disease |
Birthweight, childhood growth and hypertension in adulthood
a Center for Health Services Research and Vanderbilt-Ingram Cancer Center, Vanderbilt University, Nashville, TN 37232–8300, USA.
b Department of Epidemiology, Shanghai Cancer Institute, Shanghai 200032, PR China.
Xiao Ou Shu, MD, PhD, Vanderbilt University Medical Center, Health Services Research, 6th floor, Room 6009, Medical Center East, Nashville, TN 37232–8300, USA. E-mail: xiao-ou.shu{at}mcmail.vanderbilt.edu
Abstract
Background Low birthweight (BW) and childhood growth have been hypothesized to be associated with an increased risk of hypertension in later life.
Methods We analysed data among 13 467 women with a recalled BW from the Shanghai Women’s Health Study. Cases included those with a self-reported hypertension with (‘confirmed cases’) or without (‘possible cases’) antihypertensive medication(s) use. Logistic regression was used to derive adjusted odds ratios (OR) and 95% CI.
Results Birthweight was inversely associated with the odds of early onset (at age 20–40 years) hypertension in a dose response manner (P for trend = 0.01). This association is stronger for ‘confirmed’ hypertension (only OR for ‘confirmed’ hypertension are referred to subsequently). Being heavier or taller than average at 15 years of age were both related to elevated odds of early onset hypertension. Women who had a low BW but were heavier than average at age 15 were more than four times (OR = 4.63, 95% CI: 2.40–8.94) more likely to have an early onset hypertension, and those who had a low BW and became taller at 15 years of age had an OR of 1.87 (95% CI: 1.05–3.31). A significant interaction between BW and weight at age 15 was observed (P = 0.04).
Conclusion Our study suggests that low BW, particularly if accompanied by accelerated childhood growth, may increase the risk of early onset hypertension in adulthood.
Keywords Birthweight, childhood growth, hypertension, China, developing country
Accepted 23 May 2002
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