Comparing the Beck Depression Inventory-II (BDI-II) and Patient Health Questionnaire (PHQ-9) Depression Measures in an Outpatient Bariatric Clinic

Obesity Surgery
Paul E SchuttKaren B Grothe

Abstract

Screening for depressive symptoms is important when evaluating bariatric surgery candidates, as worse outcomes can be seen with higher pre-surgical and post-surgical psychiatric comorbidities. The Beck Depression Inventory-II (BDI-II) and Patient Health Questionnaire (PHQ-9) are two widely used depression screening instruments. This study evaluated whether both instruments have similar performance in an outpatient bariatric surgery clinic setting. One thousand thirty-four bariatric surgery candidates completed both PHQ-9 and BDI-II whose scores were analyzed in this retrospective study. Spearman's correlation coefficient was calculated to compare total scores on each instrument. PHQ-9 categories were compared to corresponding BDI-II categories via several different methods. Weighted kappa coefficients were calculated for (1) PHQ-9 and BDI-II categories, (2) scores ≥10 on the PHQ-9 and ≥20 on the BDI-II, and (3) the specific item of suicidality. Spearman's correlation was strong at 0.74. The median PHQ-9 and BDI-II scores were 5 and 9, corresponding to the mild and minimal categories, respectively. Weighted kappa analysis demonstrated a moderate association between depressive symptom categories evaluated using three methods. A m...Continue Reading

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Citations

Jul 12, 2017·Expert Opinion on Drug Safety·Vincenzo FodaleAntonio David
Aug 3, 2019·Development and Psychopathology·Marieke W H van den HeuvelAnneloes L van Baar
Mar 5, 2020·Obesity Science & Practice·Elizabeth M VaughanUNKNOWN Look AHEAD Research Group

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