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Sandrah Proctor Eckel, PhD
Assistant Professor of Preventive Medicine
Preventive Medicine
SSB 202B 2001 N. Soto Street Health Sciences Campus Los Angeles
+1 323 442 2030


I am an Assistant Professor in the Division of Biostatistics of the Department of Preventive Medicine at the University of Southern California (USC). I work on statistical methods and applications in environmental epidemiology, exhaled breath biomarkers, and clinical trials for pediatric brain tumors.

Academic background. In 2009, I completed my Ph.D. in the Department of Biostatistics at the Johns Hopkins Bloomberg School of Public Health. I worked on my thesis under the supervision of Dr. Tom Louis with support from the Epidemiology and Biostatistics of Aging Training Program. I then spent two years as a postdoc at USC.

Personal background. I grew up in Seattle, living first in Ballard and then on Bainbridge Island. I moved east to attend Vassar College where I majored in Mathematics and French. I discovered Biostatistics during my junior year abroad in Paris. I enjoy hiking, and most Saturdays you can find me on a trail in the San Gabriel mountains.


Eckel SP, Cockburn M, Shu YH, Deng H, Lurmann FW, Liu L, Gilliland FD. Air pollution affects lung cancer survival. Thorax. 2016 Oct; 71(10):891-8. View in: PubMed

Jakacki RI, Cohen KJ, Buxton A, Krailo MD, Burger PC, Rosenblum MK, Brat DJ, Hamilton RL, Eckel SP, Zhou T, Lavey RS, Pollack IF. Phase 2 study of concurrent radiotherapy and temozolomide followed by temozolomide and lomustine in the treatment of children with high-grade glioma: a report of the Children's Oncology Group ACNS0423 study. Neuro Oncol. 2016 Oct; 18(10):1442-50. View in: PubMed

Eckel SP, Zhang Z, Habre R, Rappaport EB, Linn WS, Berhane K, Zhang Y, Bastain TM, Gilliland FD. Traffic-related air pollution and alveolar nitric oxide in southern California children. Eur Respir J. 2016 May; 47(5):1348-56. View in: PubMed

Kim HB, Eckel SP, Kim JH, Gilliland FD. Exhaled NO: Determinants and Clinical Application in Children With Allergic Airway Disease. Allergy Asthma Immunol Res. 2016 Jan; 8(1):12-21. View in: PubMed

Chintagumpala M, Eckel SP, Krailo M, Morris M, Adesina A, Packer R, Lau C, Gajjar A. A pilot study using carboplatin, vincristine, and temozolomide in children with progressive/symptomatic low-grade glioma: a Children's Oncology Group study†. Neuro Oncol. 2015 Aug; 17(8):1132-8. View in: PubMed

Eckel SP, Linn WS, Salam MT, Bastain TM, Zhang Y, Rappaport EB, Liu M, Berhane K. Spirometry effects on conventional and multiple flow exhaled nitric oxide in children. J Asthma. 2015 Mar; 52(2):198-204. View in: PubMed

Zhang Y, Berhane K, Eckel SP, Salam MT, Linn WS, Rappaport EB, Bastain TM, Gilliland FD. Determinants of Children's Exhaled Nitric Oxide: New Insights from Quantile Regression. PLoS One. 2015; 10(7):e0130505. View in: PubMed

Salam MT, Lin PC, Eckel SP, Gauderman WJ, Gilliland FD. Inducible Nitric Oxide Synthase Promoter Haplotypes and Residential Traffic-Related Air Pollution Jointly Influence Exhaled Nitric Oxide Level in Children. PLoS One. 2015; 10(12):e0145363. View in: PubMed

Chen Z, Salam MT, Eckel SP, Breton CV, Gilliland FD. Chronic effects of air pollution on respiratory health in Southern California children: findings from the Southern California Children's Health Study. J Thorac Dis. 2015 Jan; 7(1):46-58. View in: PubMed

Berhane K, Zhang Y, Salam MT, Eckel SP, Linn WS, Rappaport EB, Bastain TM, Lurmann F, Gilliland FD. Longitudinal effects of air pollution on exhaled nitric oxide: the Children's Health Study. Occup Environ Med. 2014 Jul; 71(7):507-13. View in: PubMed

van der Valk RJ, Duijts L, Timpson NJ, Salam MT, Standl M, Curtin JA, Genuneit J, Kerhof M, Kreiner-Møller E, Cáceres A, Gref A, Liang LL, Taal HR, Bouzigon E, Demenais F, Nadif R, Ober C, Thompson EE, Estrada K, Hofman A, Uitterlinden AG, van Duijn C, Rivadeneira F, Li X, Eckel SP, Berhane K, Gauderman WJ, Granell R, Evans DM, St Pourcain B, McArdle W, Kemp JP, Smith GD, Tiesler CM, Flexeder C, Simpson A, Murray CS, Fuchs O, Postma DS, Bønnelykke K, Torrent M, Andersson M, Sleiman P, Hakonarson H, Cookson WO, Moffatt MF, Paternoster L, Melén E, Sunyer J, Bisgaard H, Koppelman GH, Ege M, Custovic A, Heinrich J, Gilliland FD, Henderson AJ, Jaddoe VW, de Jongste JC. Fraction of exhaled nitric oxide values in childhood are associated with 17q11. 2-q12 and 17q12-q21 variants. J Allergy Clin Immunol. 2014 Jul; 134(1):46-55. View in: PubMed

Eckel SP, Baumbach J, Hauschild AC. On the importance of statistics in breath analysis-hope or curse? J Breath Res. 2014 Mar; 8(1):012001. View in: PubMed

Eckel SP, Linn WS, Berhane K, Rappaport EB, Salam MT, Zhang Y, Gilliland FD. Estimation of parameters in the two-compartment model for exhaled nitric oxide. PLoS One. 2014 Jan 17; 9(1):e85471. View in: PubMed

Hricko A, Rowland G, Eckel S, Logan A, Taher M, Wilson J. Global Trade, Local Impacts: Lessons from California on Health Impacts and Environmental Justice Concerns for Residents Living near Freight Rail Yards. Int J Environ Res Public Health. 2014; 11(2):1914-41. View in: PubMed

Roy A, Gong J, Thomas DC, Zhang J, Kipen HM, Rich DQ, Zhu T, Huang W, Hu M, Wang G, Wang Y, Zhu P, Lu SE, Ohman-Strickland P, Diehl SR, Eckel SP. The cardiopulmonary effects of ambient air pollution and mechanistic pathways: a comparative hierarchical pathway analysis. PLoS One. 2014; 9(12):e114913. View in: PubMed

Linn WS, Rappaport EB, Eckel SP, Berhane KT, Zhang Y, Salam MT, Bastain TM, Gilliland FD. Multiple-flow exhaled nitric oxide, allergy, and asthma in a population of older children. Pediatr Pulmonol. 2013 Sep; 48(9):885-96. View in: PubMed

Eckel SP, Salam MT. Single high flow exhaled nitric oxide is an imperfect proxy for distal nitric oxide. Occup Environ Med. 2013 Jul; 70(7):519-20. View in: PubMed

Eckel SP, Louis TA, Chaves PH, Fried LP, Margolis AH. Modification of the association between ambient air pollution and lung function by frailty status among older adults in the cardiovascular health study. Am J Epidemiol. 2012 Aug 1; 176(3):214-23. View in: PubMed

Salam MT, Byun HM, Lurmann F, Breton CV, Wang X, Eckel SP, Gilliland FD. Genetic and epigenetic variations in inducible nitric oxide synthase promoter, particulate pollution, and exhaled nitric oxide levels in children. J Allergy Clin Immunol. 2012 Jan; 129(1):232-239. e7. View in: PubMed

Eckel SP, Berhane K, Salam MT, Rappaport EB, Linn WS, Bastain TM, Zhang Y, Lurmann F, Avol EL, Gilliland FD. Residential traffic-related pollution exposures and exhaled nitric oxide in the children's health study. Environ Health Perspect. 2011 Oct; 119(10):1472-7. View in: PubMed

Eckel SP, Bandeen-Roche K, Chaves PH, Fried LP, Louis TA. Surrogate screening models for the low physical activity criterion of frailty. Aging Clin Exp Res. 2011 Jun; 23(3):209-16. View in: PubMed

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