Head-to-head randomized trials are mostly industry sponsored and almost always favor the industry sponsor.
Flacco ME, Manzoli L, Boccia S, Capasso L, Aleksovska K, Rosso A, Scaioli G, De Vito C, Siliquini R, Villari P, Ioannidis JP.
Flacco ME, et al. Among authors: scaioli g.
J Clin Epidemiol. 2015 Jul;68(7):811-20. doi: 10.1016/j.jclinepi.2014.12.016. Epub 2015 Feb 7.
J Clin Epidemiol. 2015.
PMID: 25748073
Free article.
Review.