Further work is required to decide which scale is most suited to which purpose. Assessment of multiple sclerosis-specific health-related quality of life should be included in future clinical trials to provide a complete picture of patients' health status.
The existing knowledge about the health-related quality of life (HRQoL) and its relationship to cognitive and/or emotional functioning in multiple sclerosis (MS) is scarce. We assessed differences between subgroups of MS outpatients (n = 209) on one HRQoL instrument: a version of the Functional Assessment of Multiple Sclerosis quality of life instrument; on two cognitive functioning tests: the Mini-Mental State Examination and the clock drawing test; and on two emotional functioning tests: the Hamilton Rating Scale for Depression and the Hamilton Rating Scale for Anxiety. Three disease-related characteristics were assessed: physical disability, duration of the illness, and clinical course. The results showed that each of these has an effect on at least one dimension of HRQoL and on one mental functioning test. Thus, the more severe, the more progressive, and the longer the illness duration, the lower the HRQoL. Likewise, cognitive mean scores decreased and emotional mean scores increased with greater illness severity and progressive the MS. Furthermore, we also found significant correlations between cognitive and emotional functioning tests and HRQoL dimensions. Thus, the worse cognitive functioning and the higher depressive and anxiety symptoms score the lower the HRQoL.
Participation rates were good in both phases of the NEDICES baseline study, and this was influenced by age, sex and setting of the participants. Educational attainment, occupation and health status data are analogous to other Spanish studies performed in the elderly. As the study population was large and good participation rates were achieved, precise analysis of morbidity of the neurological disorders investigated will be possible.
Little information exists about caregivers of persons with multiple sclerosis (MS). Our aims were to describe the characteristics of a sample of caregivers of persons with MS, assess their perceived burden, health-related quality of life, and investigate factors influencing this burden. We studied 278 caregivers of persons with MS, recruited from a Spanish cross-sectional survey, measuring health-related quality of life by the 36-Item Short-Form Health Survey (SF-36) and burden by the Zarit Caregiver Burden Interview. Of the caregivers, 56.8% were female and their mean age was 50.1 +/- 12.6 years. Their main relationship with the person with MS was spouse/partner (52.9%) and son or daughter (25.9%). Caregiver General Health, Mental Health, Bodily Pain, and Role-emotional Functioning were the most affected dimensions on the SF-36. Multiple regression analysis showed that independent and significant predictors of burden were Role-emotional Functioning and Vitality dimensions SF-36 scores of caregivers, and the Expanded Disability Status Scale scores. The total adjusted variance explained by these variables (adjusted R(2)) was 0.512. Emotional factors and the disability of the person with MS were major predictors of burden. Psychological and social support should be considered to reduce caregiver burden.
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