The Quadratic Relationship Between Body Mass Index and Suicide Ideation: A Nonlinear Analysis of Indirect Effects.
A nonlinear indirect effects framework was used to investigate potential interpersonal indirect effects (i.e., perceived burden and thwarted belonging) accounting for the nonlinear relationship between body mass index (BMI) and suicide ideation. Using a sample of 338 undergraduates, results revealed a significant quadratic effect of BMI on suicide ideation via perceived burden only, which became significant as BMI fell below 18.00 kg/m2and above 28.00 kg/m2. Our results provide novel information relevant for suicide risk screening in the context of weight- and health-related interventions and provide justification for future longitudinal trials assessing suicide risk across the BMI spectrum.
Department of Psychology, Auburn University, Auburn, AL, USA.
Kelly L
KL
Zuromski
Department of Psychology, Auburn University, Auburn, AL, USA.
Ian
I
Cero
Department of Psychology, Auburn University, Auburn, AL, USA.
Tracy K
TK
Witte
Department of Mathematics and Statistics, Auburn University, Auburn, AL, USA.
Peng
P
Zeng
D000328:Adult; D015992:Body Mass Index; D005260:Female; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D008962:Models, Theoretical; D050177:Overweight / Q000175:diagnosis / Q000523:psychology; D012649:Self Concept; D016728:Self-Injurious Behavior; D013334:Students / Q000523:psychology; D059020:Suicidal Ideation; D013405:Suicide / Q000523:psychology / Q000706:statistics & numerical data; D000092864:Suicide Prevention