title: Neck Circumference in Overweight/Obese Subjects who Visited the Binjai Supermall in Indonesia.
abstract: BACKGROUND
  Neck circumference (NC) is a simple screening measure for identifying overweight and obesity, it reflects upper-body fat distribution and central obesity.
  
  
  OBJECTIVE
  To determine whether a single measure of NC might be used to identify overweight/obesity.
  
  
  METHODS
  An observational, analytical, cross-sectional study was done. The subjects consisted of all consecutive subjects who visited Binjai Supermall (North Sumatera Province, Indonesia) between 23rd and 29th September 2015 and agreed to participate in the study. NC, weight, height, body mass index (BMI), and waist circumference (WC) were measured. Overweight and obesity were defined as BMIs of 23.0-24.9 and ≥ 25 kg/m2, respectively.
  
  
  RESULTS
  In total, 1554 subjects participated. Of these, 1238 (79.7%) were overweight/obese. NC correlated significantly with weight, height, BMI, and WC. Receiver operating characteristic (ROC) analysis showed that for all men and women, the area under the curve of overweight/obesity for NC was 0.83 and 0.79, respectively. The best NC cutoff points for males and females that indicated overweight/obesity were ≥ 37 cm (sensitivity, 78.3% and specificity, 75.5%) and ≥ 33.5 cm (sensitivity, 76.6% and specificity, 66.7%), respectively.
  
  
  CONCLUSIONS
  The NC cutoffs that were identified may be useful for screening for overweight/obesity and related co-morbidities.
authors.affiliation: Department of Internal Medicine, Faculty of Medicine, North Sumatra University - H. Adam Malik Hospital, Jalan Bunga Lau No 17, Medan 20136, Indonesia.
authors.forename: Dharma
authors.initials: D
authors.lastname: Lindarto
authors.affiliation: Department of Internal Medicine, Faculty of Medicine, North Sumatra University - H. Adam Malik Hospital, Jalan Bunga Lau No 17, Medan 20136, Indonesia.
authors.lastname: Shierly
authors.affiliation: Department of Internal Medicine, Faculty of Medicine, North Sumatra University - H. Adam Malik Hospital, Jalan Bunga Lau No 17, Medan 20136, Indonesia.
authors.forename: Santi
authors.initials: S
authors.lastname: Syafril
keywords: BMI; cutoff point; neck circumference; obesity; overweight