Age and gender characteristics of patients affected with multiple sclerosis in Hungary between 2004 and 2016

Abstract

The nationwide age and gender distribution of newly diagnosed and prevalent multiple sclerosis patients has been unknown in Hungary, as until 2020 only regional studies had been reported about the frequency and age characteristics of subjects with multiple sclerosis, based on single-center patient registries. In the present study with the analysis of over 14000 patients, we describe the changes in age distribution of prevalent and incident subjects between 2004 and 2016 and compare our results with the data published on the subject during the last decades in Hungary. We have analyzed the pseudonymized NEUROHUN database provided by the single-payer National Health Insurance Fund, that contains each claim submitted by public hospitals and outpatient services for neurologic diseases between 2004 and 2016. Using the ICD10-code of multiple sclerosis, we have previously established the administrative definition of the illness and estimated its prevalence and incidence in the country. The mean age of prevalent patients was 47.9 years in 2015, whereas in the same year the mean age of incident cases was 37.4 years. The average age of prevalent patients shows a significant rise - with an annual increase of one fifth-one third year (p<0.001) - with a more pronounced increase among women. The age of women is higher by half a year (p = 0.002). The most populous age groups among prevalent subjects shift from the fifties towards the younger generations between 35-40 years of age. The average age of incident subjects slowly, but significantly decreases, with a mean annual decrease of about one third year (p<0.001). Our results suggest that though new patients are younger year-by-year and the most populous age groups are also younger, altogether the average age of prevalent subjects continuously increases, probably due to the longer survival and lifespan of patients with multiple sclerosis. Orv Hetil. 2021; 162(19): 746-753.