Whalley D, Belongie K, Frangiosa T, Krasa H, Mladsi DM, Twiss J, Wolowacz S. Understanding the patient experience of erythropoietic protoporphyria and x-linked protoporphyria: a qualitative study. Poster presented at the ISPOR 2022 Conference; May 15, 2022. Washington, DC. [abstract] Value Health. 2022 Jun; 25(6 S1).
Twiss J, McKenna SP. Comparing the impact of psoriasis and atopic dermatitis on quality of life: co-calibration of the PSORIQoL and QoLIAD. Qual Life Res. 2015 Jan;24(1):105-13. doi: 10.1007/s11136-014-0630-y
Twiss J, McKenna SP. Equating scores on two dermatology-specific patient-reported outcome measures. Poster presented at the 19th Annual Conference of the International Society for Quality of Life Research (ISOQOL); October 2012. Budapest, Hungary. [abstract] Qual Life Res. 2012 Oct; 21(1):94. doi: 10.1007/s11136-012-0248-x
Twiss J, Meads DM, Preston EP, Crawford SR, McKenna SP. Can we rely on the Dermatology Life Quality Index (DLQI) as a measure of the impact of psoriasis or atopic dermatitis? J Invest Dermatol. 2012 Jan;132(1):76-84. doi: 10.1038/jid.2011.238
Twiss J, McKenna S, Crawford SR, Doward LC. Scaling properties of two commonly used outcome measures in dermatology – the Dermatology Life Quality Index (DLQI) and the Psoriasis Quality of Life Scale (PSORIQoL). Presented at the 13th Annual European Congress; November 2010. Prague, Czech Republic. [abstract] Value Health. 2010 Nov; 13(7):A244.
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