Abstract
Abstract
Chronic neurological disorders may affect various cognitive processes, including religiosity or superstitious belief. We tested the hypotheses that superstitious beliefs are less prevalent in Parkinson’s disease (PD) and more prevalent in people with epilepsy (PWE) than in patients with multiple sclerosis (MS) or healthy controls (HCs). We conducted an anonymous survey among outpatients and HCs by asking them to ascribe meaning or report belief for 27 culturally adapted statements (9 omens and 18 superstitions). The sum of items that a respondent believes in was labelled the superstition index (SI). The SI was compared between groups by means of the Kruskal-Wallis (H) test and negative binomial regression modelling. Two-step cluster analysis was performed to discern different subgroups based on answers to the items of the SI. There were 553 respondents who completed the questionnaire (183 PWE, 124 patients with PD, 133 with MS and 113 HCs). Complete SI scores were collected for 479 (86.6%) participants and they were lower in patients with PD (n = 96, Md = 1, IQR = 0-5.75) in comparison to those with epilepsy (n = 155, Md = 6, IQR = 1–14), MS (n = 120, Md = 4, IQR = 0–12) or HCs (n = 108, Md = 4.5, IQR = 1–10), H(3) = 26.780, p < 0.001. The negative binomial regression model (n = 394, likelihood ratio χ2 = 35.178, p < 0.001), was adjusted for sex, place of residence, income and education, and female sex was the only characteristic associated with the SI (β = 0.423, OR = 1.526, 95% CI = 1.148 to 2.028). Both female sex (β = 0.422, OR = 1.525, 95% CI = 1.148 to 2.026) and Parkinson’s disease (β=-0.428, OR = 0.652, 95% CI = 0.432 to 0.984) were significant predictors of the SI when age was removed from the model. Two-step cluster analysis resulted in individuals with PD being grouped into “extreme non-believer”, “non-believer” and “believer” rather than “non-believer” and “believer” clusters characteristic for PWE, patients with MS and HCs. Our study suggests that individuals with PD believe in less superstitions than patients with MS, PWE or HCs. The results of this investigation should be independently confirmed after adjusting for PD-specific variables.
Publisher
Research Square Platform LLC
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