Anderson IM, Jones S, Twiss J. Do negative cognitive style and personality predict depression symptoms and functional outcomes in severe bipolar and unipolar disorders? Int J Cogn Ther. 2009 Dec 15;2(4):343-53. doi: 10.1521/ijct.2009.2.4.343
Wilburn J, McKenna SP, Twiss J. Further developments of the rheumatoid arthritis quality of life scale (RAQoL). Poster presented at the 2009 ISPOR 12th Annual European Congress; October 2009. Paris, Spain. [abstract] Value Health. 2009 Oct; 12(7):A447-8. doi: 10.1016/S1098-3015(10)75215-3
Twiss J, Doward LC, McKenna SP, Eckert B. Interpreting scores on the multiple sclerosis-specific PRIMUS and U-FIS outcome measures. Poster presented at the 2009 ISPOR 12th Annual European Congress; October 2009. Paris, France. [abstract] Value Health. 2009 Oct; 12(7):A373. doi: 10.1016/S1098-3015(10)74836-1
Twiss J, McKenna SP, Preston E, Meads DM. Can we rely on scores from the dermatology life quality index? Poster presented at the 2009 ISPOR 12th Annual European Congress; October 2009. Paris, France. [abstract] Value Health. 2009 Oct; 12(7):A460. doi: 10.1016/S1098-3015(10)75277-3
Meads DM, Doward LC, McKenna SP, Fisk J, Twiss J, Eckert B. The development and validation of the Unidimensional Fatigue Impact Scale (U-FIS). Mult Scler. 2009 Oct 1;15(10):1228-38. doi: 10.1177/1352458509106714
Doward LC, McKenna SP, Meads DM, Twiss J, Eckert BJ. The development of Patient Reported Outcome Indices for Multiple Sclerosis (PRIMUS). Mult Scler. 2009 Sep 1;15(9):1092-102.