Effects of a Single Session of OnabotulinumtoxinA Therapy on Sleep Quality and Psychological Measures: Preliminary Findings in a Population of Chronic Migraineurs.

Correlation Analysis The Spearman correlation analysis showed significant relations among several of the studied parameters; in particular, a highly significant correlation was found ( p < 0.001) between HADS-a and BDI (rho = 0.866), HADS-a and HADS-d (rho = 0.810), HADS-d and BDI (rho = 0.804), PSQI and BDI-II (rho = 0.772), PSQI and HADS-d (rho = 0.736), PSQI and HADS-a (rho = 0.723), PSQI and MIDAS (rho = 0.540), MMDs and MIDAS (rho = 0.507), PSQI and MMDs (rho = 0.443), MMDs and MADs (rho = 0.422), and MIDAS and HIT-6 (rho = 0.416); the remaining significant correlations may be found in the Supplementary Material (see Supplementary Figure S1) .

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