Evaluation of Neck Circumference as Potential Marker for Metabolic Syndrome in Children

Background: Metabolic syndrome (MetS) is complicated condition especially in pediatrics. For better MetS definition, marker discovery are interested. More accurate simple indices may be of value, such as neck circumference (NC). We investigated accuracy of NC for the diagnosis of MetS in adolescent girls.   Materials and Methods: This cross-sectional study was conducted on schoolgirl who live in Mashhad and Sabzevar cities, Razavi Khorasan, Iran at ۲۰۱۸. The study sample comprised ۹۸۸ girls with mean age ۱۴.۵۶ ±۱.۵۳ years old. The NC measured in site between mid-cervical spine and mid-anterior neck and enzymatic commercial kits measured biochemical analysis. The definitions of MetS included: IDF, NCEP-ATP III, and two modified NCEPs. Results: Often subjects are non-smoker, menstruated, and reside in Mashhad. The age, living location, and dwelling type showed the very weak association with NC. NC was significantly associated with WC and elevated TG. The highest (r= ۰.۲۷۵ (P= ۰.۰۰۰۱), and lowest (r= ۰.۱۵۵ (p < ۰.۰۰۱) association were between NC and the DeFerranti's and IDF definitions, respectively. The odd ratios (CI ۹۵%) estimated for the different definitions were as follows: IDF: ۱.۴۱ (۱.۱۸- ۱.۶۹), NCEP: ۱.۵۴ (۱.۳۱- ۱.۷۹), Cook's: ۱.۶۸ (۱.۳۷- ۲.۰۷), and DeFerranti's: ۱.۵۹ (۱.۴۰- ۱.۸۰). ROC analysis showed that the specificity ranged between ۷۸.۵۷ – ۱۰۰.۰۰% and sensitivity ranged between ۶۲.۱۰ – ۷۸.۲۲% of NC for the different definitions of MetS definitions. A NC of >۳۱ cm estimated as cutoff for all studied definitions except Cook's definition. Conclusion: Besed on the results, NC should be considered as marker for central obesity and fat distribution in the diagnosis of MetS.

Keywords:

Children , Anthropometric Index , metabolic syndrome , Obesity