title: 6-n-Propylthiouracil sensitivity and obesity status among ethnically diverse children.
abstract: OBJECTIVE
  To examine the relationship of 6-n-propylthiouracil (PROP) sensitivity to BMI while statistically controlling for demographic characteristics in two age groups of children: 9-10 years and 17-18 years (n 1551).
  
  
  METHODS
  Cross-sectional design with a multi-ethnic (White, African-American, Hispanic, Other) sample of 813 children aged 9-10 years and 738 children aged 17-18 years. Children were recruited from local elementary and high schools with at least 30 % minority ethnic enrolment. Children's height, weight and waist circumference were measured along with their PROP taster status. PROP was measured using two paper discs, one impregnated with NaCl (1.0 mol/l) and the other with PROP solution (0.50 mmol/l).
  
  
  RESULTS
  A significant PROP sensitivity by socio-economic status (SES) interaction term (P = 0.010) was detected wherein supertasters had the largest BMI percentile and Z-score, but only among the group with highest SES.
  
  
  CONCLUSIONS
  The results suggest that other factors overwhelmed the influence of PROP sensitivity on adiposity in lower-SES groups. The percentage of variance accounted for by the interaction term was about 1 %. Thus, PROP supertasters had the largest BMI percentile and Z-score, but only among the highest-SES group.
authors.affiliation: USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA. jbaranow@bcm.tmc.edu
authors.forename: Janice C
authors.initials: JC
authors.lastname: Baranowski
authors.forename: Tom
authors.initials: T
authors.lastname: Baranowski
authors.forename: Alicia
authors.initials: A
authors.lastname: Beltran
authors.forename: Kathy B
authors.initials: KB
authors.lastname: Watson
authors.forename: Russell
authors.initials: R
authors.lastname: Jago
authors.forename: Margaret
authors.initials: M
authors.lastname: Callie
authors.forename: Mariam
authors.initials: M
authors.lastname: Missaghian
authors.forename: Beverly J
authors.initials: BJ
authors.lastname: Tepper
mesh_terms: D000293:Adolescent; D000704:Analysis of Variance; D015992:Body Mass Index; D002648:Child; D003430:Cross-Sectional Studies; D005006:Ethnicity; D005260:Female; D006801:Humans; D007182:Income; D008297:Male; D009765:Obesity; D011441:Propylthiouracil; D012923:Social Class; D013649:Taste
chemical_list: D011441:Propylthiouracil