This is the accepted version of the following article: Jones, GT, Atzeni, F, Beasley, M, Flüß, E, Sarzi-Puttini, P & Macfarlane, GJ 2015, 'The prevalence of fibromyalgia in the general population: A comparison of the American College of Rheumatology 1990, 2010 and modified 2010 classification criteria' Arthritis & Rheumatology, vol 67, no. 2, pp. 568-575., which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/art.38905/abstract