Fig. 2
From: Headache Disability Questionnaire: cross-cultural adaptation and validation of the Turkish version
Scree plot indicating an optimal 2-factor solution for the HDQ (n = 130)
Fig. 2 | BMC Neurology
From: Headache Disability Questionnaire: cross-cultural adaptation and validation of the Turkish version
Scree plot indicating an optimal 2-factor solution for the HDQ (n = 130)