Prevalence of multiple sclerosis in Poland.

OBJECTIVE: The prevalence of multiple sclerosis (MS)was previously unknown in Poland. The aim of this study was to determine the prevalence of MS in Poland.

METHODS: MS prevalence was determined on the basis of data from the Swietokrzyskie (central Poland) and Podlaskie (northeastern Poland) Voivodeships. The area population on the prevalence study day (December 31, 2013) was 1,268,239 (649,007 women; 619,232 men) in central and 1,195,625 (612,979 women; 582,646 men) in northeastern Poland.

RESULTS: The overall crude prevalence rate of confirmed MS patients was 109.1/100,000 (95% confidence interval[CI]103.5-115.0) in the Swietokrzyskie and 108.7/100,000 (95% CI 103.0-114.7) in the Podlaskie Voivodeships. A significantly higher prevalence was recorded in females (149.8/100,000, 95% CI 140.6-159.3 vs. 142.4/100,000, 95% CI 133.3-152.0) than in males (66.5/100,000, 95% CI 60.4-73.1 vs.57.8/100,000, 95% CI 52.0-64.2)(p < 0.001). Age-adjusted rates for the Polish Standard Population were the same in both regions (110.3/100,000 (95% CI 104.6-116.1) vs.110.9/100,000 (95% CI 105.1-117.1)) and for the European Standard Population did not different statistically between both voivodeships (103.9/100,000 (95% CI 98.6-109.5) vs.108.5/100,000 (95% CI 102.7-114.5)).

CONCLUSION: This is the first data that obtained the level of MS prevalence in Poland and confirmed that Poland is a high-risk area for multiple sclerosis.