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. Author manuscript; available in PMC: 2022 Feb 1.
Published in final edited form as: Cephalalgia. 2020 Sep 9;41(2):135–147. doi: 10.1177/0333102420956711

Figure 3.

Figure 3.

GLED exposure decreased the numeric pain scale (NPS). (a) WLED did produce a slight reduction in the NPS for the chronic migraine group (n[WLED]epi = 8, n[WLED]chro = 21). (b) GLED exposure produced a greater and statistically significant reduction in the NPS in both episodic and chronic migraine groups (n[GLED]epi = 7, n[GLED]chro = 22). Data presented as Average ± SEM, standard error of the mean (Wilcoxon matched-pairs signed rank test, *p<0.05, ***p<0.001).