Amy F. Subar, Ph.D., M.P.H., R.D.
Program Director, Risk Factor Assessment Branch

Epidemiology and Genomics Research Program
Division of Cancer Control and Population Sciences
National Cancer Institute
National Institutes of Health
9609 Medical Center Drive, Rm. 4E140, MSC 9762
Bethesda, MD 20892
(For express delivery, use Rockville, MD 20850)

Interest Areas

  • Dietary assessment
  • Automated Self-Administered 24-Hour Dietary Recall (ASA24)
  • Measurement error
  • Food frequency questionnaires


  • Ph.D. – Human Nutrition
    Syracuse University
  • M.P.H. – Public Health Nutrition
    University of Minnesota, School of Public Health
  • B.S. – Dietetics
    State University College at Buffalo


Dr. Amy Subar is a Program Director with the Risk Factor Assessment Branch (RFAB) of the Epidemiology and Genomics Research Program (EGRP) in NCI's Division of Cancer Control and Population Sciences (DCCPS). Her focus is on developing, designing, and conducting nutrition research related to dietary methods, dietary instruments, measurement error, dietary surveillance, and nutritional epidemiology.

Recently, Dr. Subar led a project to develop and validate the web-based Automated, Self-Administered 24-Hour Dietary RecallExternal Web Site Policy (ASA24) using multimedia computer technology and participated in its evaluation and validation. Currently, she is leading an effort to develop a mobile version of ASA24 and collaborating on the development of Canadian and Australian versions. ASA24 is freely available to investigators.

Dr. Subar also leads the Multi-cohort Eating and Activity Study for Understanding Reporting Error (MEASURE) and is a collaborator on the Validation Studies Pooling Project. Both these studies are pooling data from large recovery biomarker studies to assess and develop methods to adjust for measurement error related to self-report dietary assessment instruments.

Dr. Subar also directed the development and evaluation of the Diet History QuestionnaireExternal Web Site Policy, NCI's publicly available food frequency questionnaire. This work encompassed all areas of questionnaire development: cognitive issues, methods to determine food and portion size lists, methods for creating nutrient databases for frequency questionnaires, testing of response rates, and comparative validation. This food frequency questionnaire has been modified to be web-based and is freely available to investigators conducting nutrition research.

Dr. Subar's research has also focused on understanding measurement error in the biomarker-based Observing Protein and Energy Nutrition (OPEN) Study. She is also a lead investigator in the AARP Diet and Health StudyExternal Web Site Policy, the largest prospective dietary cohort in the United States.

Prior to joining EGRP, Dr. Subar was a Research Nutritionist in the Risk Factor Monitoring and Methods Branch in the Applied Research Program (now the Health Care Delivery Research Program), DCCPS.

Dr. Subar serves as a member of the Editorial Board of the Journal of the American Dietetic Association and is a member of the American Dietetic Association and the American Society of Nutrition. She is also on the International Scientific Advisory Board for the Canadian Partnership for Tomorrow Project, a pan-Canadian cohort study, and is an instructor on dietary assessment for a Nutritional Epidemiology Course at the Imperial College of London.


Freedman LS, Commins JM, Moler JE, Arab L, Baer DJ, Kipnis V, Midthune D, Moshfegh AJ, Neuhouser ML, Prentice RL, Schatzkin A, Spiegelman D, Subar AF, Tinker LF, Willett W. Pooled results from 5 validation studies of dietary self-report instruments using recovery biomarkers for energy and protein intakeExternal Web Site Policy. Am J Epidemiol. 2014 Jul 15;180 (2):172-88.

Kirkpatrick SI, Subar AF, Douglass D, Zimmerman TP, Thompson FE, Kahle LL, George SM, Dodd KW, Potischman N. Performance of the Automated Self-Administered 24-Hour Recall (ASA24) relative to a measure of true intakes and to an interviewer-administered 24-h recallExternal Web Site Policy. Am J Clin Nutr. 2014 Apr 30;100 (1):233-40.

Reedy J, Krebs-Smith SM, Miller PE, Liese AD, Kahle LL, Park Y, Subar AF. Higher diet quality is associated with decreased risk of all-cause, cardiovascular disease, and cancer mortality among older adultsExternal Web Site Policy. J Nutr. 2014 Jun;144 (6):881-89.

Subar AF, Midthune D, Tasevska A, Kipnis V, Freedman LS. Checking for completeness of 24-h urine collection using para-amino benzoic acid not necessary in the Observing Protein and Energy Nutrition StudyExternal Web Site Policy. Eur J Clin Nutr. 2013 Aug;67 (8):863-67.

Thompson F, Subar AF. Dietary assessment methodology, Chapter 1. In: Coulston AM, Boushey CJ, Ferruzzi MG, eds. Nutrition in the Prevention and Treatment of Disease (third edition). San Diego, CA: Academic Press 2013.

Subar AF, Kirkpatrick SI, Mittl B, Zimmerman TP, Thompson FE, Bingley C, Willis G, Islam NG, Baranowski T, McNutt S, Potischman N. The Automated Self-Administered 24-hour Dietary Recall (ASA24): a resource for researchers, clinicians, and educators from the National Cancer InstituteExternal Web Site Policy. J Acad Nutr Diet. 2012 Aug;112 (8):1134-37.

Carroll RJ, Midthune D, Subar AF, Shumakovich M, Freedman LS, Thompson FE, Kipnis V. Taking advantage of the strengths of 2 different dietary assessment instruments to improve intake estimates for nutritional epidemiologyExternal Web Site Policy. Am J Epidemiol. 2012 Feb 15;175 (4):340-47.

Subar AF, Crafts J, Zimmerman TP, Wilson M, Mittl B, Islam NG, McNutt S, Potischman N, Buday R, Hull SG, Baranowski T, Guenther PM, Willis G, Tapia R, Thompson FE. Assessment of the accuracy of portion size reports using computer-based food photographs aids in the development of an automated self-administered 24-hour recall (ASA24)External Web Site Policy. J Am Diet Assoc. 2010 Jan;110 (1):55-64.

Schatzkin A1, Subar AF, Moore S, Park Y, Potischman N, Thompson FE, Leitzmann M, Hollenbeck A, Morrissey KG, Kipnis V. Observational epidemiologic studies of nutrition and cancer: the next generation (with better observation)External Web Site Policy. Cancer Epidemiol Biomarkers Prev. 2009 Apr;18 (4):1026-32.

George SM, Park Y, Leitzmann MF, Freedman ND, Dowling EC, Reedy J, Schatzkin A, Hollenbeck A, Subar AF. Fruit and vegetable intake and risk of cancer: a prospective cohort studyExternal Web Site Policy. Am J Clin Nutr. 2009 Jan;89 (1):347-53.

Freedman LS, Potischman N, Kipnis V, Midthune D, Schatzkin A, Thompson FE, Troiano RP, Prentice R, Patterson R, Carroll R, Subar AF. A comparison of two dietary instruments for evaluating the fat - breast cancer relationshipExternal Web Site Policy. Intl J Epidemiol. 2006 Aug;35 (4):1011-21.

Kipnis V, Subar AF, Midthune D, Freedman LS, Ballard-Barbash R, Troiano RP, Bingham S, Schoeller DA, Schatzkin A, Carroll RJ. Structure of dietary measurement error: results of the OPEN biomarker studyExternal Web Site Policy. Am J Epidemiol. 2003 Jul 1;158 (1):14-21.

Subar AF, Kipnis V, Troiano RP, Midthune D, Schoeller DA, Bingham S, Sharbaugh CO, Trabulsi J, Runswick S, Ballard-Barbash R, Sunshine J, Schatzkin A. Using intake biomarkers to evaluate the extent of dietary misreporting in a large sample of adults: the OPEN StudyExternal Web Site Policy. Am J Epidemiol. 2003 Jul 1;158 (1):1-13.

Subar AF, Thompson FE, Kipnis V, Midthune D, Hurwitz P, McNutt S, McIntosh A, Rosenfeld S. Comparative validation of the Block, Willett, and National Cancer Institute food frequency questionnaires: the Eating at America's Table StudyExternal Web Site Policy. Am J Epidemiol. 2001 Dec 15;154(12):1089-99.

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