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Table 4 Correlation between the PHQ-9 and PHQ-2 scores and the BDI-II score, the MIDAS score, the HIT-6 score, and the MSQoL score

From: Validation of the Patient Health Questionnaire-9 (PHQ-9) and PHQ-2 in patients with migraine

Variable r p valuea
PHQ-9   
 BDI-II 0.754 <0.001
 MIDAS 0.377 <0.001
 HIT-6 0.519 <0.001
 MSQoL −0.538 <0.001
PHQ-2   
 BDI-II 0.739 <0.001
 MIDAS 0.396 <0.001
 HIT-6 0.556 <0.001
 MSQoL −0.580 <0.001
  1. PHQ-9 Patient Health Questionnaire-9, PHQ-2 Patient Health Questionnaire-2, BDI-II Beck Depression Inventory-II, MIDAS Migraine Disability Assessment Score, HIT-6 Headache Impact Test-6, MSQoL Migraine-Specific Quality of Life
  2. aSpearman correlations are applied