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High Altitude Continues to Reduce Birth Weights in Colorado.
Bailey, Beth A; Donnelly, Meghan; Bol, Kirk; Moore, Lorna G; Julian, Colleen G.
Afiliação
  • Bailey BA; Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
  • Donnelly M; Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
  • Bol K; Denver Health and Hospital Authority, Denver, CO, USA.
  • Moore LG; Colorado Department of Public Health and Environment, Center for Health and Environmental Data, Denver, CO, USA.
  • Julian CG; Division of Reproductive Sciences, Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
Matern Child Health J ; 23(11): 1573-1580, 2019 Nov.
Article em En | MEDLINE | ID: mdl-31243627
ABSTRACT
Objectives Colorado's relatively high altitudes have been reported to lower birth weight but the most recent studies were conducted 20 years ago. Since then, the accuracy for assigning altitude of residence has been improved with the use of geocoding, and recommendations for pregnancy weight gain have changed. We therefore sought to determine whether currently, residence at high altitude (≥ 2500 m, 8250 ft) lowers birth weight in Colorado. Methods Birth certificate data for all live births (n = 670,017) to Colorado residents from 2007 to 2016 were obtained from the Colorado Department of Public Health and Environment. Geocoded altitude of maternal residence for the current birth was assigned to each birth record. Linear and logistic regression models were used to examine the effects of altitude on birth weight or low birth weight (< 2500 g) while controlling for other factors affecting birth weight, including pregnancy weight gain. Results Compared to low altitude, infants born at high altitude weighed 118 g less and were more often low birth weight (8.8% vs. 11.7%, p < 0.05). After accounting for other factors influencing birth weight, high altitude reduced birth weight by 101 g and increased the risk of low birth weight by 27%. The only factors with larger impacts on birth weight were hypertensive disorders of pregnancy and cigarette use during pregnancy. Conclusions for Practice High altitude remains an important determinant of elevated LBW rates in Colorado, and likely contributes to Colorado's comparative resistance towards meeting the Healthy People 2010/2020 nationwide goal to reduce the low birth weight rate to 7.2% by 2020.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Peso ao Nascer / Resultado da Gravidez / Altitude Tipo de estudo: Guideline / Observational_studies / Prognostic_studies / Risk_factors_studies Limite: Adult / Female / Humans / Pregnancy País/Região como assunto: America do norte Idioma: En Ano de publicação: 2019 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Peso ao Nascer / Resultado da Gravidez / Altitude Tipo de estudo: Guideline / Observational_studies / Prognostic_studies / Risk_factors_studies Limite: Adult / Female / Humans / Pregnancy País/Região como assunto: America do norte Idioma: En Ano de publicação: 2019 Tipo de documento: Article