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Publication Type
Journal Article
Author, Analytic
Kaufman, Jay S.; Asuzu, Michael C.; Mufunda, Jacob; Forrester, Terrence E.; Wilks, Rainford J.; Luke, Amy; Long, Andrew E.; Cooper, Richard S.
Author Affiliation, Ana.
Tropical Metabolism Research Unit
Article Title
Relationship between blood pressure and body mass index in lean populations
Medium Designator
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Connective Phrase
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Journal Title
Hypertension
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Reprint Status
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Date of Publication
1997
Volume ID
30
Issue ID
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Page(s)
1511-16
Language
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Connective Phrase
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Location/URL
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ISSN
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Notes
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Abstract
Investigates whether there is a linear relationship between body mass index (BMI) and blood pressure (BP) across the entire BMI range among 11235 adult men and women from seven low-BMI populations in Africa and the Caribbean. Uses kernel smoothing and multivariate linear and spline regression modeling to examine gender differences in the relationship and to test for a threshold. Age-adjusted slopes of BP on BMI were uniformly higher in men than women, with pooled slopes ratios of 2.00 and 2.20 for systolic and diastolic BPs, respectively. Men displayed no evidence of age modification or nonlinearity in the relationship, and the age-adjusted slope of systolic BP on BMI was 0.90 (95 percent confidence interval [CI], 0.76 to 1.04). Women demonstrated both age modification and nonlinearity. For both younger (45 years) and older (45+ years) women, the optimal change point for a single threshold model was found to be 21kg/m. Slopes of systolic BP on BMI above this threshold were positive and significant: 0.68 (95 percent CI, 0.54 to 0.81) and 0.53 (95 percent CI, 0.29 to 0.76) for younger and older women, respectively. Slopes below the threshold were essentially zero for both groups of women, and difference between the slopes above and below the threshold was significant for younger women.....
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