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. 2020 Apr 28;14:44. doi: 10.3389/fnbeh.2020.00044

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Copyright © 2020 Santiago, Galvão, de Almeida, Mota-Rolim, Palhano-Fontes, Maia-de-Oliveira, de Araújo, Lobão-Soares and Galvão-Coelho.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Box plot (median ± Q75% and Q25%) of last month sleep latency (in hours) according to the Pittsburgh Sleep Quality Index (PSQI) in the sleep disturbance (SD: n = 16), poor sleep (PS: n = 18) and good sleep (GS: n = 21) groups. ***p < 0.001, Kruskal–Wallis test. (B) Mean ± standard error of the previous month sleep duration (in hours) according to the PSQI, in SD (n = 16) PS (n = 18), and GS (n = 21) groups. ***p < 0.001 and **p < 0.05 one-way analysis of variance (ANOVA) and Fisher post hoc. Two outlier patients of SD were excluded from both statistical analyses.