1.Wang, Y & Lobstein, T (2006) Worldwide trends in childhood overweight and obesity. Int J Pediatr Obes 1, 11–25.
2.Sardinha, LB, Santos, R, Vale, S et al. (2010) Prevalence of overweight and obesity among Portuguese youth: a study in a representative sample of 10–18-year-old children and adolescents. Int J Pediatr Obes 6, e124–e128.
4.Cole, TJ, Bellizzi, MC, Flegal, KM et al. (2000) Establishing a standard definition for child overweight and obesity worldwide: international survey. BMJ 320, 1240–1243.
6.Brambilla, P, Bedogni, G, Moreno, LA et al. (2006) Crossvalidation of anthropometry against magnetic resonance imaging for the assessment of visceral and subcutaneous adipose tissue in children. Int J Obes (Lond) 30, 23–30.
7.Cattaneo, A, Monasta, L, Stamatakis, E et al. (2010) Overweight and obesity in infants and pre-school children in the European Union: a review of existing data. Obes Rev 11, 389–398.
8.Clasey, JL, Bouchard, C, Teates, CD et al. (1999) The use of anthropometric and dual-energy X-ray absorptiometry (DXA) measures to estimate total abdominal and abdominal visceral fat in men and women. Obes Res 7, 256–264.
9.Pouliot, MC, Despres, JP, Lemieux, S et al. (1994) Waist circumference and abdominal sagittal diameter: best simple anthropometric indexes of abdominal visceral adipose tissue accumulation and related cardiovascular risk in men and women. Am J Cardiol 73, 460–468.
10.Schreiner, PJ, Terry, JG, Evans, GW et al. (1996) Sex-specific associations of magnetic resonance imaging-derived intra-abdominal and subcutaneous fat areas with conventional anthropometric indices. The Atherosclerosis Risk in Communities Study. Am J Epidemiol 144, 335–345.
11.Soto Gonzalez, A, Bellido, D, Buno, MM et al. (2007) Predictors of the metabolic syndrome and correlation with computed axial tomography. Nutrition 23, 36–45.
12.Freedman, DS, Serdula, MK, Srinivasan, SR et al. (1999) Relation of circumferences and skinfold thicknesses to lipid and insulin concentrations in children and adolescents: the Bogalusa Heart Study. Am J Clin Nutr 69, 308–317.
13.Savva, SC, Tornaritis, M, Savva, ME et al. (2000) Waist circumference and waist-to-height ratio are better predictors of cardiovascular disease risk factors in children than body mass index. Int J Obes Relat Metab Disord 24, 1453–1458.
14.Moreno, LA, Pineda, I, Rodriguez, G et al. (2002) Waist circumference for the screening of the metabolic syndrome in children. Acta Paediatr 91, 1307–1312.
15.Ruiz, JR, Rizzo, NS, Hurtig-Wennlof, A et al. (2006) Relations of total physical activity and intensity to fitness and fatness in children: the European Youth Heart Study. Am J Clin Nutr 84, 299–303.
16.Zimmet, P, Alberti, KG, Kaufman, F et al. (2007) The metabolic syndrome in children and adolescents – an IDF consensus report. Pediatr Diabetes 8, 299–306.
17.Weiss, R, Dufour, S, Taksali, SE et al. (2003) Prediabetes in obese youth: a syndrome of impaired glucose tolerance, severe insulin resistance, and altered myocellular and abdominal fat partitioning. Lancet 362, 951–957.
18.Daniels, SR, Khoury, PR & Morrison, JA (2000) Utility of different measures of body fat distribution in children and adolescents. Am J Epidemiol 152, 1179–1184.
19.Kelishadi, R, Gheiratmand, R, Ardalan, G et al. (2007) Association of anthropometric indices with cardiovascular disease risk factors among children and adolescents: CASPIAN Study. Int J Cardiol 117, 340–348.
20.Maffeis, C, Pietrobelli, A, Grezzani, A et al. (2001) Waist circumference and cardiovascular risk factors in prepubertal children. Obes Res 9, 179–187.
21.Lee, S, Bacha, F, Gungor, N et al. (2006) Waist circumference is an independent predictor of insulin resistance in black and white youths. J Pediatr 148, 188–194.
22.Katzmarzyk, PT (2004) Waist circumference percentiles for Canadian youth 11–18y of age. Eur J Clin Nutr 58, 1011–1015.
23.McCarthy, HD, Jarrett, KV & Crawley, HF (2001) The development of waist circumference percentiles in British children aged 5.0–16.9 y. Eur J Clin Nutr 55, 902–907.
24.Moreno, LA, Fleta, J, Mur, L et al. (1999) Waist circumference values in Spanish children – gender related differences. Eur J Clin Nutr 53, 429–433.
25.Hatipoglu, N, Ozturk, A, Mazicioglu, MM et al. (2008) Waist circumference percentiles for 7- to 17-year-old Turkish children and adolescents. Eur J Pediatr 167, 383–389.
26.Yan, W, Yao, H, Dai, J et al. (2008) Waist circumference cutoff points in school-aged Chinese Han and Uygur children. Obesity (Silver Spring) 16, 1687–1692.
27.Savva, SC, Kourides, Y, Tornaritis, M et al. (2001) Reference growth curves for cypriot children 6 to 17 years of age. Obes Res 9, 754–762.
28.Fernandez, JR, Redden, DT, Pietrobelli, A et al. (2004) Waist circumference percentiles in nationally representative samples of African-American, European-American, and Mexican-American children and adolescents. J Pediatr 145, 439–444.
29.Sung, RY, So, HK, Choi, KC et al. (2008) Waist circumference and waist-to-height ratio of Hong Kong Chinese children. BMC Public Health 8, 324.
30.Fredriks, AM, van Buuren, S, Fekkes, M et al. (2005) Are age references for waist circumference, hip circumference and waist-hip ratio in Dutch children useful in clinical practice? Eur J Pediatr 164, 216–222.
31.Eisenmann, JC (2005) Waist circumference percentiles for 7- to 15-year-old Australian children. Acta Paediatr 94, 1182–1185.
32.Kelishadi, R, Gouya, MM, Ardalan, G et al. (2007) First reference curves of waist and hip circumferences in an Asian population of youths: CASPIAN study. J Trop Pediatr 53, 158–1564.
33.Inokuchi, M, Matsuo, N, Anzo, M et al. (2007) Age-dependent percentile for waist circumference for Japanese children based on the 1992–1994 cross-sectional national survey data. Eur J Pediatr 166, 655–661.
34.Xiong, F, Garnett, SP, Cowell, CT et al. (2011) Waist circumference and waist-to-height ratio in Han Chinese children living in Chongqing, south-west China. Public Health Nutr 14, 20–26.
35.Jackson, RT, Al Hamad, N, Prakash, P et al. (2011) Waist circumference percentiles for Kuwaiti children and adolescents. Public Health Nutr 14, 70–76.
36.Zannolli, R & Morgese, G (1996) Waist percentiles: a simple test for atherogenic disease? Acta Paediatr 85, 1368–1369.
37.Ashwell, M, Cole, TJ & Dixon, AK (1996) Ratio of waist circumference to height is strong predictor of intra-abdominal fat. BMJ 313, 559–560.
38.Ashwell, M & Hsieh, SD (2005) Six reasons why the waist-to-height ratio is a rapid and effective global indicator for health risks of obesity and how its use could simplify the international public health message on obesity. Int J Food Sci Nutr 56, 303–307.
39.World Health Organization (2000) Obesity: Preventing and Managing the Global Epidemic. WHO Technical Report Series no. 894. Geneva: WHO.
40.Browning, LM, Hsieh, SD & Ashwell, M (2010) A systematic review of waist-to-height ratio as a screening tool for the prediction of cardiovascular disease and diabetes: 0.5 could be a suitable global boundary value. Nutr Res Rev 23, 247–269.
41. Instituto Nacional de Estatística (2003) Instituto Nacional de Estatística Estimativas da População Residente, segundo Grandes Grupos Etários e Sexo, em 31/12/2003 [National Institute of Statistics. Estimation of the Resident Population, According to Age and Gender, in 31/12/2003]. Lisbon: INE; available at http://www.ine.pt/
42.World Medical Association (1989) World Medical Association Handbook of Declarations. Farney Voltaire: WMA.
43.Lohman, TG, Roche, AF & Martorell, R (1988 (editors) Anthropometric Standardization Reference Manual. Champaign, IL: Human Kinetics Books.
44.Cole, TJ & Green, PJ (1992) Smoothing reference centile curves: the LMS method and penalized likelihood. Stat Med 11, 1305–1319.
45.Wang, J, Thornton, JC, Bari, S et al. (2003) Comparisons of waist circumferences measured at 4 sites. Am J Clin Nutr 77, 379–384.
46.Lobstein, T & Frelut, ML (2003) Prevalence of overweight among children in Europe. Obes Rev 4, 195–200.
47.Li, C, Ford, ES, Mokdad, AH et al. (2006) Recent trends in waist circumference and waist-height ratio among US children and adolescents. Pediatrics 118, e1390–e1398.
48.McCarthy, HD, Jarrett, KV, Emmett, PM et al. (2005) Trends in waist circumferences in young British children: a comparative study. Int J Obes (Lond) 29, 157–162.
49.Lear, SA, James, PT, Ko, GT et al. (2010) Appropriateness of waist circumference and waist-to-hip ratio cutoffs for different ethnic groups. Eur J Clin Nutr 64, 42–61.
50.Schwandt, P, Kelishadi, R & Haas, GM (2008) First reference curves of waist circumference for German children in comparison to international values: the PEP Family Heart Study. World J Pediatr 4, 259–266.