Examination of the Beck Depression Inventory-II Factor Structure Among Bariatric Surgery Candidates.
BACKGROUND
The Beck Depression Inventory-II (BDI-II) is frequently used to evaluate bariatric patients in clinical and research settings; yet, there are limited data regarding the factor structure of the BDI-II with a bariatric surgery population.


METHODS
Exploratory factor analysis (EFA) using principal axis factoring with oblimin rotation was employed with data from 1228 consecutive presurgical bariatric candidates. Independent t tests were used to examine potential differences between sexes. Confirmatory factor analysis (CFA) was conducted with the next 383 consecutive presurgical patients to evaluate the proposed model based on EFA results.


RESULTS
EFA revealed three factors: negative perceptions, diminished vigor, and cognitive dysregulation, each with adequate internal consistency. Six BDI-II items did not load significantly on any of the three factors. CFA results largely supported the proposed model.


CONCLUSIONS
Results suggest that dimensions of depression for presurgical bariatric candidates vary from other populations and raise important caveats regarding the utility of the BDI-II in bariatric research.
Department of Psychology, Keiser University, Port Saint Lucie Campus, 10330 South Federal Highway, Port St. Lucie, FL, 34952, USA, sharonmhayes@gmail.com.
Sharon
S
Hayes
Nina
N
Stoeckel
Melissa A
MA
Napolitano
Charlotte
C
Collins
G Craig
GC
Wood
Jamie
J
Seiler
Heidi E
HE
Grunwald
Gary D
GD
Foster
Christopher D
CD
Still
D000328:Adult; D050110:Bariatric Surgery / Q000523:psychology; D001828:Body Image / Q000523:psychology; D003863:Depression / Q000150:complications / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009767:Obesity, Morbid / Q000150:complications / Q000523:psychology* / Q000601:surgery*; D010552:Personality Assessment / Q000592:standards; D010555:Personality Inventory; D011569:Psychiatric Status Rating Scales; D011795:Surveys and Questionnaires