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Fig. 1 | The Journal of Headache and Pain

Fig. 1

From: The association of headache frequency with pain interference and the burden of disease is mediated by depression and sleep quality, but not anxiety, in chronic tension type headache

Fig. 1

Path analyses to headache frequency from headache intensity, sleep quality, bodily pain, and burden of headache (physical and emotional) with depression as the mediating variable. Standardized direct path coefficients are presented. Data from double arrows represent correlations between the variables whereas data from single arrows represent standardized regression weights (parameter estimates). e1 and e2: error terms for each variable

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The Journal of Headache and Pain

ISSN: 1129-2377

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