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Your Environment. Your Health.

Richard Kwok, Ph.D.

Chronic Disease Epidemiology Group

Richard Kwok, Ph.D.
Richard Kwok, Ph.D.
Staff Scientist
Tel (919) 627-8892
Fax (919) 541-2511
Richard.Kwok@nih.gov
P.O. Box 12233
Mail Drop A3-05
Research Triangle Park, North Carolina 27709
Delivery Instructions

Research Summary

Richard Kwok, Ph.D. is a staff scientist in the Epidemiology Branch at NIEHS and is the Lead Associate Investigator for the GuLF STUDY  . The study focuses on the potential health effects of clean-up workers, volunteers, and community members from the Deepwater Horizon disaster. Dr. Kwok specializes in the environmental causes of a range of diseases, and the pervasive nature of the environment in disease etiology has allowed him to work on a number of different projects with domestic and international collaborators from federal, academic, and industry sectors. His work has included research into air and water pollution, including arsenic, and non-ionizing UV radiation exposures with outcomes including cardiovascular, respiratory, reproductive and cancer health outcomes. Dr. Kwok received his B.S.P.H. in environmental science, and his M.S.P.H. and Ph.D. in epidemiology from the University of North Carolina at Chapel Hill.

Studies

  • The GuLF STUDY 

    The Gulf Long Term Follow-Up Study (GuLF STUDY) was developed to learn about possible health effects of the recent Deepwater Horizon oil spill in the Gulf of Mexico.

Selected Publications

  1. Balshaw DM, Kwok RK. (2012) Innovative methods for improving measures of the personal environment. American journal of preventive medicine 42(5):558-9. [Abstract (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=22516500) ]
  2. Hamilton, C.M., Strader, L.C., Pratt, J.G., Maiese, D., Hendershot, T., Kwok, R.K., Hammond, J.A., Huggins, W., Jackman, D., Pan, H., Nettles, D.S., Beaty, T.H., Farrer, L.A., Kraft, P., Marazita, M.L., Ordovas, J.M., Pato, C.N., Spitz, M.R., Wagener, D., Williams, M., Junkins, H.A., Harlan, W.R., Ramos, E.M., Haines, J. (2011). The PhenX Toolkit: Get the Most From Your MeasuresThe PhenX Toolkit: Get the Most From Your Measures. American Journal of Epidemiology, 174(3):253-60 [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/21749974) ]
  3. Hamilton, C.M., Strader, L.C., Pratt, J.G., Maiese, D., Hendershot, T., Kwok, R.K., Hammond, J.A., Huggins, W., Jackman, D., Pan, H., Nettles, D.S., Beaty, T.H., Farrer, L.A., Kraft, P., Marazita, M.L., Ordovas, J.M., Pato, C.N., Spitz, M.R., Wagener, D., Williams, M., Junkins, H.A., Harlan, W.R., Ramos, E.M., Haines, J. (2011). Response to Invited Commentary: Hamilton et al. Respond to "Consolidating Data Harmonization." American Journal of Epidemiology, 174(3):265-6.
  4. Myers, S. L., Lobdell, D. T., Liu, Z., Xia, Y., Ning, Z., Kwok, R. K., Mumford, J. L., & Mendola, P. (2010) Maternal drinking water arsenic exposure and perinatal outcomes in Inner Mongolia, China. Journal of Epidemiology and Community Health, 64(4), 325-9. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/19692727) ]
  5. Yu, C. L., Li, Y., Freedman, D. M., Fears, T., Kwok, R. K., Chodick, G., Alexander, B. H., Kimlin, M., Kricker, A., Armstrong, B. K., & Linet, M. S. (2009). Assessment of lifetime cumulative sun exposure using a self-administered questionnaire: Reliability of two approaches. Cancer Epidemiology, Biomarkers & Prevention, 18(2), 464-471. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/19190171) ]
  6. Kwok, R. K., Linet, M. S., Chodick, G., Kleinerman, R. A., Freedman, D. M., Fears, T., Johnson, R. E., & Alexander, B. H. (2009). Simplified categorization of outdoor activities for male and female U.S. indoor workers; application to ultraviolet radiation assessment questionnaires. Photochemistry and Photobiology, 85(1), 45-49.  [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/18643910) ]
  7. Chodick, G., Kleinerman, R. A., Linet, M. S., Fears, T., Kwok, R. K., Kimlin, M. G., Alexander, B. H., & Freedman, D. M. (2008). Agreement between diary records of time spent outdoors and personal ultraviolet radiation measurements. Photochemistry and Photobiology, 84(3), 713–718. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/18435619) ]
  8. Chodick, G., Freedman, D. M., Kwok, R. K., Fears, T., Linet, M. S., Alexander, B. H., & Kleinerman, R. A. (2007). Agreement between contemporaneously recorded and subsequently recalled time spent outdoors: Implications for environmental exposure studies. Annals of Epidemiology, 17(2), 106–111. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/16882464) ]
  9. Kwok, R. K. (2007). A review and rationale for studying the cardiovascular effects of drinking water arsenic in women of reproductive age. Toxicology and Applied Pharmacology, 222(3), 344–350. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/17467762) ]
  10. Kwok, R. K., Mendola, P., Liu, Z. Y., Savitz, D. A., Heiss, G., He, L. L., Xia, Y., Lobdell, D., Zeng, D., Thorp, J. M., Jr., Creason, J. P., & Mumford, J. L. (2007). Drinking water arsenic exposure and blood pressure in healthy women of reproductive age in inner Mongolia, China. Toxicology and Applied Pharmacology, 222(3), 337–343. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/17509635) ]
  11. Liu, Z. Y., Lobdell, D. T., Myers, S. L., He, L. L., Yang, M., Kwok, R. K., Mumford, J. L., & Mendola, P. (2007). Pregnancy and perinatal health, inner Mongolia, China, 1996–1999. International Journal of Gynecology and Obstetrics, 99(2), 127–131. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/17618632) ]
  12. Mumford, J., Wu, K., Xia, Y., Kwok, R. K., Yang, Z., Foster, J., & Sanders, W. E., Jr. (2007). Chronic arsenic exposure and cardiac repolarization abnormalities with qt interval prolongation in a population-based study. Environmental Health Perspectives, 115(5), 690–694 [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/17520054) ]
  13. Ning, Z., Lobdell, D. T., Kwok, R. K., Liu, Z., Zhang, S., Ma, C., Riediker, M., & Mumford, J. L. (2007). Residential exposure to drinking water arsenic in inner Mongolia, China. Toxicology and Applied Pharmacology, 222(3), 351–356. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/17448512) ]
  14. Kwok, R. K., Kaufmann, R. B., & Jakariya, M. (2006). Arsenic in drinking water and reproductive health outcomes: A study of Bangladesh integrated nutrition programme participants. Journal of Health, Population and Nutrition, 24(2), 190–205. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/17195560) ]
  15. Li, Y. H., Xia, Y. J., He, L. J., Ning, Z. X., Wu, K. G., Zhao, B. X., Le, X. C., Kwok, R. K., Schmitt, M., Wade, T., Mumford, J., & Otto, D. (2006). Neurotoxic effects of chronic exposure to arsenic via drinking water in inner Mongolia: I. symptoms and pinprick testing. Journal of Water and Health, 4(1), 29–37 [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/16604836) ]
  16. Otto, D., Li, Y. H., Xia, Y. J., He, L. L., Ning, Z. X., Wu, K. G., Zhao, B. X., Hudnell, H. K., Kwok, R. K., Geller, A., Wade, T., & Mumford, J. (2006). Health effects of chronic exposure to arsenic via drinking water in inner Mongolia: II. vibrotactile and visual function. Journal of Water and Health, 4(1), 39–48. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/16604837) ]
  17. Feng, Z., Xia, Y., Tian, D., Wu, K., Schmitt, M., Kwok, R. K., & Mumford, J. L. (2001). DNA damage in buccal epithelial cells from individuals chronically exposed to arsenic via drinking water in inner Mongolia, China. Anticancer Research, 21(1A), 51–57. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/11299789) ]
  18. Kwok, R. K., & Yankaskas, B. C. (2001). The use of census data for determining race and education as SES indicators: A validation study. Annals of Epidemiology, 11(3), 171–177. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/11293403) ]
  19. Heinzen, M. T., Yankaskas, B. C., & Kwok, R. K. (2000). Comparison of woman-specific versus breast-specific data for reporting screening mammography performance. Academic Radiology, 7(4), 232–236. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/10766095) ]
  20. Howard-Reed, C., Rea, A. W., Zufall, M. J., Burke, J. M., Williams, R. W., Suggs, J. C., Sheldon, L. S., Walsh, D., & Kwok, R. (2000). Use of a continuous nephelometer to measure personal exposure to particles during the U.S. environmental protection agency Baltimore and Fresno panel studies. Journal of the Air and Waste Management Association, 50(7), 1125–1132. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/10939206) ]
  21. Williams, R., Suggs, J., Zweidinger, R., Evans, G., Creason, J., Kwok, R., Rodes, C., Lawless, P., & Sheldon, L. (2000). The 1998 Baltimore particulate matter epidemiology-exposure study: Part 1. Comparison of ambient, residential outdoor, indoor, and apartment particulate matter monitoring. Journal of Exposure Analysis and Environmental Epidemiology, 10(6), Pt. 1, 518–532. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/11140436) ]
  22. Williams, R., Suggs, J., Creason, J., Rodes, C., Lawless, P., Kwok, R., Zweidinger, R., & Sheldon, L. (2000). The 1998 Baltimore particulate matter epidemiology-exposure study: Part 2. Personal exposure assessment associated with an elderly study population. Journal of Exposure Analysis and Environmental Epidemiology, 10(6), 533–543. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/11140437) ]
  23. Williams, R., Suggs, J., Rodes, C., Lawless, P., Zweidinger, R., Kwok, R., Creason, J., & Sheldon, L. (2000). Comparison of PM2.5 and pm10 monitors. Journal of Exposure Analysis and Environmental Epidemiology, 10(5), 497–505. [Abstract (http://www.ncbi.nlm.nih.gov/pubmed/11051539) ]

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