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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 4.

Figure 4.

GLED exposure improved the Headache Impact Test-6 (HIT-6) results. (a) WLED exposure did not produce a significant reduction in HIT-6 scores (scale 36–78, where 36 = No impact from migraine, 78 = worst possible impact from migraine) (n[WLED]epi = 6, n[WLED]chro = 18). (b) GLED exposure produced a statistically significant reduction in the HIT-6 scores in all migraine groups (n[GLED]epi = 6, n[GLED]chro = 21). Data presented as average ± SEM, standard error of the mean (Wilcoxon matched pairs signed rank test, *p<0.05, ***p<0.001).