Gaissmaier W, Giese H, Galesic M, Garcia-Retamero R, Kasper J, Kleiter I, Meuth SG, Köpke S, Heesen C

OBJECTIVE: A shared decision-making approach is suggested for multiple sclerosis (MS) patients. To properly evaluate benefits and risks of different treatment options accordingly, MS patients require sufficient numeracy – the ability to understand quantitative information. It is unknown whether MS affects numeracy. Therefore, we investigated whether patients‘ numeracy was impaired compared to a probabilistic national sample. METHODS: As part of the larger prospective, observational, multicenter study PERCEPT, we assessed numeracy for a clinical study sample of German MS patients (N=725) with a standard test and compared them to a German probabilistic sample (N=1001), controlling for age, sex, and education. Within patients, we assessed whether disease variables (disease duration, disability, annual relapse rate, cognitive impairment) predicted numeracy beyond these demographics. RESULTS: MS patients showed a comparable level of numeracy as the probabilistic national sample (68.9% vs. 68.5% correct answers, P=0.831). In both samples, numeracy was higher for men and the highly educated. Disease variables did not predict numeracy beyond demographics within patients, and predictability was generally low. CONCLUSION: This sample of MS patients understood quantitative information on the same level as the general population. PRACTICE IMPLICATIONS: There is no reason to withhold quantitative information from MS patients.

Patient Educ Couns. 2018 Jan;101(1):74-78

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