BMI and seatbelt use.
OBJECTIVE
Seatbelt use among obese persons may be reduced because seatbelts are uncomfortable. We investigated the association between obesity and seatbelt use with data from the 2002 Behavioral Risk Factor Surveillance System Survey.


METHODS
Multivariable logistic regression was used to calculate odds ratios and 95% confidence intervals (CIs) for seatbelt use among overweight (BMI, 25.0 to 29.9), obese (BMI, 30.0 to 39.9), and extremely obese (BMI >or= 40.0) persons, relative to a non-overweight/non-obese reference group (BMI <or= 24.9), adjusted for age, race, gender, education, and state seatbelt law.


RESULTS
Adjusted odds ratios for seatbelt use were 0.89 (95% CI, 0.85 to 0.93) for overweight, 0.69 (0.66 to 0.73) for obese, and 0.45 (95% CI, 0.40 to 0.50) for extremely obese persons. Interaction effects were evident for all covariates, with stronger associations between increasing BMI and decreasing seatbelt use for women, increasing age, higher education, and residence in states with a secondary seatbelt law. There was a linear decrease in seatbelt use with increasing BMI for all subgroups except persons 18 to 24 years old.


CONCLUSIONS
Lack of seatbelt can be added to the list of risk factors associated with obesity. Effective preventive interventions are needed to promote seatbelt use among overweight and obese persons.
Schlundt
David G
DG
Department of Psychology, Vanderbilt University, Nashville, TN 37203, USA. David.Schlundt@Vanderbilt.Edu
Briggs
Nathaniel C
NC
Miller
Stephania T
ST
Arthur
Carlotta M
CM
Goldzweig
Irwin A
IA
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015992:Body Mass Index; D003430:Cross-Sectional Studies; D004522:Educational Status; D005260:Female; D006801:Humans; D007407:Interviews as Topic; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009765:Obesity / Q000523:psychology; D012309:Risk-Taking; D012622:Seat Belts / Q000331:legislation & jurisprudence / Q000706:statistics & numerical data*; D012737:Sex Factors; D013219:State Government