Patterns Fall 2001 Article
 

 

 

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Medicine and Math Mix in Biostats
 
As a senior graduating high school in Culbertson, Nebraska, Lynette Hock aspired to become a doctor. At the University of Nebraska-Lincoln, she completed courses in genetics, general biology, anatomy, microbiology, and chemistry.

However, Hock began to question her future plans. Although she wanted a career in medicine, her interests lured her toward mathematics.

However, Hock discovered that medicine and mathematics are not mutually exclusive fields. Vast quantities of data have increased the demand for statisticians in a variety of disciplines. Statisticians enjoy a special role and are able to contribute expertise everywhere from the social sciences to the natural sciences. The medical field is among those areas seeking the clarifying power of statistical analysis.

Following her junior year, Hock attended a Research for Undergraduates (REU) program at Rutgers University where she applied her mathematics background to model the energy levels formed by DNA when it folds. "From the REU experience, I saw how mathematics and statistics directly relate to medical research," she stated.

After completing her undergraduate degree in mathematics and a master's program in biostatistics, Hock joined the University of Nebraska Medical Center [UNMC] as a Statistical Coordinator.

Hock assists researchers from a study's incipient stages to publication. During the design of a study, Hock will advise researchers as to the appropriate sample size, ensuring a satisfactory margin of error and thus the integrity of the study's conclusions.

Once completed, studies frequently generate massive quantities of data. Hock selects the forms of analysis that will parse through the numbers to reveal connections between variables. Hock explains the mathematical relationships that she discovers to researchers and helps report the results in journals and at conferences.

Dr. Jane Meza, Associate Professor of Biostatistics at UNMC, explained that a career as a biostatistician enables her to share in a variety of research projects at UNMC, ranging from survey sampling to clinical trials.

As a statistician for the Chidren's Oncology Group, Dr. Meza has been involved in a National Cancer Institute funded study investigating the treatment and symptoms of rhabdomysocarcoma, a cancerous tumor of striated muscle that is the most common soft tissue sarcoma in children and adolescents.

She has also studied the effect of glaucoma treatments on eye color and gene behavior during breast cancer.

Sometimes the needs of medicine exceed the capabilities of established statistical practices. Both Hock and Meza conduct research to improve statistical methodology and analysis to meet researchers' needs. Recently, Hock has been analyzing data from a study attempting to correlate certain genes with the severity of lymphoma symptoms, such as life expectancy.

New technology allows researchers to measure the activity of thousands of genes in tissue samples from patients. According to Hock, this process "creates huge data sets that defy traditional statistical techniques."

Hock has experimented with multiple weapons from her technical arsenal, such as cluster analysis, classification and regression trees, as well as permutation tests in order to obtain a satisfactory understanding.

Meza and Hock advised students interested in biostatistics to pursue research assistantships and internship while in college. For Meza, who completed her graduate and undergraduate degrees in statistics at UNL, a research assistantship lead to her faculty position.

As for educational background, Hock noted, "I don't think any preparation in biology is required, but it definitely helps to have an interest in it." Dr. Meza added that opportunities are available for those possessing bachelor's, master's and doctoral degrees.