Moze byt. No prisne vzate im nevyslo vobec nic, lebo medzi vegetarianov zaratali aj tych co jedia ryby, a tych bolo viac ako tych co nejedia ryby aj v skupine "vegetarianov":

While 0.2% of the interviewees were pure vegetarians (57.7% female), 0.8% reported to be vegetarians consuming milk and eggs (77.3% female), and 1.2% to be vegetarians consuming fish and/or eggs and milk (76.7% female). ... Since the three vegetarian diet groups included a rather small number of persons (N = 343), they were analyzed as one dietary habit group.

e: vidim ze na fcb pises podobne ako ja
este teda z tycho komentov, paper od rovnakych autorov, zrejme v rovnakej kvalite a s rovnakym vysledkom, bububu vegetariani :)
http://www.lifescienceglobal.com/pms/index.php/jnt/article/view/374/pdf