Twiss J, Whalley D, Doward L, Balp MM, Brass CA, Cryer D, Sanyal A, Anstee QM. Validation of NASH-CHECK: a novel patient-reported outcome measure for nonalcoholic steatohepatitis. J Patient Rep Outcomes. 2023 Jul 14;7(1):69. doi: 10.1186/s41687-023-00589-5
Twiss J, McKenna SP, Graham J, Swetz K, Sloan J, Gomberg-Maitland M. Applying Rasch analysis to evaluate measurement equivalence of different administration formats of the activity limitation scale of the Cambridge Pulmonary Hypertension Outcome Review (CAMPHOR). Health Qual Life Outcomes. 2016 Apr 9;14(1):57. doi: 10.1186/s12955-016-0462-2.
Twiss J, McKenna S, Ganderton L, Jenkins S, Ben-L'amri M, Gain K, Fowler R, Gabbay E. Psychometric performance of the CAMPHOR and SF-36 in pulmonary hypertension. BMC Pulm Med. 2013 Jul 12;13:45. doi: 10.1186/1471-2466-13-45