Document Detail

Sibling composition during childhood and adult blood pressure among native Amazonians in Bolivia.
MedLine Citation:
PMID:  23021349     Owner:  NLM     Status:  Publisher    
Sibling configuration, including birth order, or the number, age, and sex of siblings is associated with parental resource allocation between children and is thus associated with a person's well-being. Little is known about the association between specific types of siblings and adult health outcomes. Here we test several hypotheses about sibling composition (number of older brothers, older sisters, younger sisters, younger brothers) and adult blood pressure in a foraging-farming society of native Amazonians in Bolivia (Tsimane'). We collected data in 2007 from 374 adults (16-60years of age) from 196 households in 13 villages. Household random-effects multiple regressions were run using systolic (SBP) or diastolic blood pressure (DBP) as outcomes; covariates included the four sibling categories and control variables (e.g., sex, age, education, body mass index [BMI]). Mean SBP and DBP were 114 (SD=14) and 66 (SD=11)mmHg. The prevalence of hypertension was 5.08%. Having an additional younger brother bore a small (3.3-5.9%) positive association with both SBP and DBP, with the effect weakening as people aged. Having an additional younger sister was associated with a small (3.8%) increase in SBP among women, with the magnitude shrinking as people aged. In a large family, the number of younger brothers may exert an impact on an individual's blood pressure.
Wu Zeng; Eduardo A Undurraga; Colleen Nyberg; Dan T A Eisenberg; Sabita Parida; Ariela Zycherman; Oyunbileg Magvanjav; Victoria Reyes-García; Susan Tanner; ; Ricardo Godoy
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-12
Journal Detail:
Title:  Economics and human biology     Volume:  -     ISSN:  1873-6130     ISO Abbreviation:  Econ Hum Biol     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-10-1     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101166135     Medline TA:  Econ Hum Biol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier B.V. All rights reserved.
Heller School for Social Policy and Management, Brandeis University, Waltham, MA 02454-9110, USA. Electronic address:
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