We read with interest Dr Capella's comments about our article.1 By chance alone, the greater the number of publications a given author has, the higher the likelihood that he or she will publish a frequently cited paper. As a result, occasionally "mass effect" could distort a citation analysis; however, this does not seem to occur frequently. Original articles by authors with many publications had a higher average number of citations per article than did those by authors with only a few publications. All but 2 of the 25 top cited authors had at least 50% more than the average number of citations per article for all original articles, suggesting that most top cited authors not only produce more articles,1 but that each article they publish is more likely to be widely recognized. We do, however, strongly agree that no measure of scholarly productivity is without bias.
Stern RS, Arndt KA. "Significant" Scientific Productivity Should Be Weighed Against the Expenses Necessary to Finance It—Reply. Arch Dermatol. 2000;136(2):266-267. doi: