Health-related quality of life and utilities among Lebanese patients with Multiple Sclerosis: A cross-sectional study

Objective: This study assessed the Health-Related Quality of Life (HRQoL) and utilities of Multiple Sclerosis (MS) patients in Lebanon using generic and MS-specific QoL instruments, categorized by disease severity, and explored factors associated with HRQoL. Methods: This was a cross-sectional, retrospective HRQoL study collecting data through face-to-face interviews using the EQ-5D-5 L and the Multiple Sclerosis International Quality of Life (MusiQoL) questionnaires. We enrolled Lebanese patients aged >= 18 years, diagnosed with MS for >6 months. Patients were categorized by disease severity using the expanded disability status scale (EDSS) scores: 0-3 (mild MS), 4-6.5 (moderate MS), and 7-9 (severe MS). Bivariate and linear regression analyses were performed to study factors associated with HRQoL. Results: A total of 210 patients (mean age: 43.3 years; 65.7 % females) were included. The mean EQ-5D-5 L utility score was 0.74. This score decreased significantly with disease severity (p < 0.001 for the trend): 0.93, 0.60, and 0.32 for mild, moderate, and severe MS, respectively. The mean MusiQoL global index score was 71.33 and was significantly lower for severe MS (58.68), than for moderate (65.23) and mild (77.80), (p < 0.001 for the trend). Higher educational level, lower EDSS scores, and longer disease duration were associated significantly with a higher EQ-5D-5 L utility (R2 = 0.67), while employment, lower EDSS scores, and decrease in cognitive difficulties were associated with better MusiQoL utility (R2 = 0.46). Conclusions: This study reveals a significant and gradual deterioration in HRQoL as MS progresses, resulting in low utility scores for patients with severe MS.