In my continuing discussion of scientific investigation and its effects on RF safety, I had reached epidemiology. Over the past few weeks, I have received correspondence from several hams with questions and concerns about epidemiology as it applies to RF Safety and Amateur Radio. Before moving on to the topic of laboratory studies of RF effects, I'll use this month's article to answer the questions, and hopefully clear up some of the lingering confusion, about epidemiology. After I had described some of the weaknesses of epidemiology, some people were convinced that there is no value in performing epidemiological studies. I'm sorry if I gave that impression.
Epidemiological studies are very valuable, as long as they are interpreted properly.
They look at data that cannot be studied any other way, particularly life-long exposures. Compared with laboratory studies, epidemiological studies are far less costly and can often be performed more quickly. As I had stated earlier, the results of an epidemiological study provide clues to things that should be looked at in more detail. Some people felt that hams were being picked on because we are an easy target. I don't agree.