title: Overweight, obesity, and colorectal cancer screening: disparity between men and women.
abstract: BACKGROUND
  To estimate the association between body-mass index (BMI: kg/m2) and colorectal cancer (CRC) screening among US adults aged >or= 50 years.
  
  
  METHODS
  Population-based data from the 2001 Behavioral Risk Factor Surveillance Survey. Adults (N = 84,284) aged >or= 50 years were classified by BMI as normal weight (18.5-<25), overweight (25-<30), obesity class I (30-<35), obesity class II (35-<40), and obesity class III (>or= 40). Interval since most recent screening fecal occult blood test (FOBT): (0 = >1 year since last screening vs. 1 = screened within the past year), and screening sigmoidoscopy (SIG): (0 = > 5 years since last screening vs. 1 = within the past 5 years) were the outcomes.
  
  
  RESULTS
  Results differed between men and women. After adjusting for age, health insurance, race, and smoking, we found that, compared to normal weight men, men in the overweight (odds ratio [OR] 1.25, 95% CI = 1.05-1.51) and obesity class I (OR = 1.21, 95% CI = 1.03-1.75) categories were more likely to have obtained a screening SIG within the previous 5 years, while women in the obesity class I (OR = 0.86, 95%CI = 0.78-0.94) and II (OR = 0.88, 95%CI = 0.79-0.99) categories were less likely to have obtained a screening SIG compared to normal weight women. BMI was not associated with FOBT.
  
  
  CONCLUSIONS
  Weight may be a correlate of CRC screening behavior but in a different way between men and women.
authors.affiliation: Department of Psychiatry, Weill Medical College of Cornell University, White Plains, NY, USA. moh2002@med.cornell.edu <moh2002@med.cornell.edu>
authors.forename: Moonseong
authors.initials: M
authors.lastname: Heo
authors.forename: David B
authors.initials: DB
authors.lastname: Allison
authors.forename: Kevin R
authors.initials: KR
authors.lastname: Fontaine
mesh_terms: D000368:Aged; D040343:Behavioral Risk Factor Surveillance System; D015992:Body Mass Index; D015179:Colorectal Neoplasms / Q000175:diagnosis* / Q000453:epidemiology / Q000517:prevention & control; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000706:statistics & numerical data*; D008875:Middle Aged; D009765:Obesity / Q000453:epidemiology / Q000523:psychology*; D009767:Obesity, Morbid / Q000453:epidemiology / Q000523:psychology; D009780:Occult Blood; D016017:Odds Ratio; D010342:Patient Acceptance of Health Care / Q000523:psychology* / Q000706:statistics & numerical data; D010818:Practice Patterns, Physicians'; D012307:Risk Factors; D012737:Sex Factors; D012812:Sigmoidoscopy / Q000706:statistics & numerical data; D014481:United States / Q000453:epidemiology