The clinical value of Coop/Wonca charts in assessment of HRQoL in a large cohort of relapsing-remitting multiple sclerosis patients: Results of a multicenter study

Background Multiple sclerosis (MS) is a chronic neurological disease impacting patients’ health-related quality of life (HRQoL). Since MS specific HRQoL questionnaire are often time consuming; thus, simple, feasible and ease administering instruments are needed to assess MS HRQoL in clinical practice and clinical trials. Hence, aim of our study was to investigated the HRQoL in a large cohort of MS patients using the Coop/Wonca charts. Methods This was multicenter, independent, non-sponsored, observational study, including patients from 40 Italian MS centers. Inclusion criteria were Expanded Disability Status Scale score between 1.0 and 5.5; stable disease at enrolment. HRQoL was assessed, using six Coop/Wonca charts for physical fitness, feelings, daily activities, social activities, changes in health, health condition, and the Composites Scores of Multiple Sclerosis Quality of Life-54 (MSQoL-54), physical health composite summary (PHCS) and the mental health composite summary (MHCS). Results Out of 648, 593 relapsing-remitting MS patients, 415 (70%) women, mean age years, 417 (70%) were finally enrolled. We found a inter-rater agreement of 0.8, ranging from 0.64 to 0.91, as expressed by the alpha coefficient. Intra-rater agreement was 0.82, ranging from 0.78 to 0.96. Coop/Wonca charts were scored with a Likert method from one to five (corresponding to best and worst HRQoL respectively). According to this scoring, study population was stratified into three categories (score 1–2 corresponding to better HRQoL; score 3 corresponding to neutral profile; score 4–5 corresponding to worse HRQoL). Coop/Wonca charts resulted significantly correlated with PHCS and with MHCS.