Lynn Shaffer's Research Essentials
The essentials for interpreting research and statistics
Milk and Health is an article written by Walter Willett, MD, DrPH and David Ludwig, MD, PhD and published in the New England Journal of Medicine (February 2020). Drs. Willett and Ludwig hail from the Harvard T. H. Chan School of Public Health. Both are respected physicians and nutrition researchers. I wouldn’t be surprised if…
An ecologic study uses summary or aggregate information as the data points for analysis (i.e., units of observation). For example, an investigator may use average alcohol intake and colorectal cancer rates of various geographic regions to examine whether there is an association between alcohol intake and risk of colorectal cancer. One advantage of these studies…