Giergiczny M, Dekker T, Hess S, Chintakayala P. Testing the stability of utility parameters in repeated best, repeated best-worst and one-off best-worst studies. Eur J Trans Infra. 2017 Sep 1;17(4):457-76. doi: 10.18757/ejtir.2017.17.4.3209
Keenan A-M, McKenna SP, Doward LC, Conaghan PC, Emery P, Tennant A. OAQoL: development and preliminary validation of a needs-based quality of life measure for osteoarthritis. Poster presented at the American College of Rheumatology 2007 Annual Scientific Meeting; April 2007. Chicago, IL. [abstract] Rheumatology (Oxford). 2007; 46:162-3.