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Serum Lipid Predicts Childhood Obesity Differently Across Racial/Ethnic Groups

142nd APHA Annual Meeting and Exposition (November 15 - November 19, 2014): http://www.apha.org/events-and-meetings/annual
Sunday, November 16, 2014

Laurens Holmes Jr., MD, DrPH , Office of Health Equity & Inclusion, Nemours Healthcare System, Wilmington, DE
Alexandra LaHurd, Research Assistant , Department of Biological Sciences, University of Delaware, Newark, DE
Pat Oceanic , Office of Health Equity and Inclusion, Nemours Alfred I. DuPont Hospital for Children, Wilmington, DE
Diane Fitzgerald , Office of Health Equity and Inclusion, Nemours Alfred I. DuPont Hospital for Children, Wilmington, DE
Kelli Grant , Office of Health Equity and Inclusion, Nemours Alfred I. DuPont Hospital for Children, Wilmington, DE
Kirk Dabney , Office of Health Equity and Inclusion, Nemours Alfred I. DuPont Hospital for Children, Wilmington, DE
PURPOSE: We aimed to examine racial/ethnic distribution of BMI and to determine whether or not racial/ethnic differences in higher BMI may correlate directly with racial/ethnic variation in high serum lipid (HSL) as a precursor of obesity.

METHIODS: A non-concurrent cohort design was used to assess our medical records of 63,873 children between 2009 and 2010. A decomposition analysis (log binomial regression with margin probability) was used.

RESULTS: Serum lipid was high in 4,812 (7.5%). HSL was most prevalent among some other race (SOR; 11.3%), intermediate among African Americans (AA), (7.5%),and  Caucasians (7.0%), but lowest among Asians (5.1%), χ2 (5) = 141.5, P<0.0001. Higher BMI was most prevalent among SOR (40.8%) and AA (34.3%), intermediate among Caucasians (29.9%) and lowest among Asians (25.2%).  Non-Hispanics (6.9%) compared to Hispanics (12.7%) had lower non-normal serum lipid. Hispanics (42.6%) had higher non-normal BMI relative to Non-Hispanics (31.7%). The risk for higher BMI was 2.6 times as likely for children with  HSL relative to those without, risk ratio (RR) = 2.6, 99% CI, 2.56–2.70, P < 0.0001.The risk for higher BMI, varied by race/ethnicity:  AA, RR = 2.70, 99% CI, 2.61–2.79; SOR, RR = 2.35, 99% CI, 2.41–2.67; Caucasians, RR = 2.53, 99% CI, 2.51-2.57; Asians, RR = 3.04, 99% CI, 2.37–3.89; Hispanics, RR = 2.32, 99% CI, 2.19–2.45; Non-Hispanics, RR = 2.64, 99% CI, 2.57–2.72.

CONCLUSION: Serum lipid concentration correlates directly with BMI, varies with race/ethnicity, predicts higher BMI differently and explains in part the racial/ethnic differences in childhood obesity in our sample.

Learning Areas:

Epidemiology

Learning Objectives:
Assess the relationship between higher BMI and race/ethnicity Determine whether or not race/ethnicity and BMI relationship is explained by serum lipid as a biomarker of obesity

Keyword(s): Obesity, Pediatrics

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: I'm well trained in internal medicine and public health specifically epidemiology and biostatistics. Currently, I'm a professor of Molecular Epidemiology at the University of Delaware. I conceptualized the study, facilitated data collection, analyzed the data, interpreted the results, and addressed the discussion and conclusion. Very importantly, I directed the preparation of the manuscript, which is on its final phase for submission for concentration for publication by a reputable peer review scientific journal.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.

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