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ISSN: 2155-6156
Journal of Diabetes & Metabolism
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Prevalence of the Metabolic Syndrome among North Indian Adolescents Using Adult Treatment Panel III and Pediatric International Diabetic Federation Definitions

Riyaz A Bhat1*, Irshad Parray2 and Zeeshan Ahmald1

1 Noora Multispecialty Hospital, Srinagar, Kashmir, India

2 Sheri Kashmir Institute of Medical Sciences, Kashmir, India

*Corresponding Author:
Riyaz Ahmad Bhat
Noora Multispecialty Hospital
Shaltang, HMT Srinagar, Kashmir, India
Tel: 9419604468
E-mail: [email protected]

Received date: November 07, 2013; Accepted date: March 06, 2014; Published date: March 10, 2014

Citation: Bhat RA, Parray I, Ahmald Z (2014) Prevalence of the Metabolic Syndrome among North Indian Adolescents Using Adult Treatment Panel III and Pediatric International Diabetic Federation Definitions. J Diabetes Metab 5:352. doi: 10.4172/2155-6156.1000352

Copyright: © 2014 Bhat RA, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Background: Childhood obesity is an important risk factor for the development of metabolic syndrome in children and adolescent. Because of high prevalence of Insulin resistance and metabolic syndrome in Indian Adult population, studies are needed to identify the prevalence of these metabolic abnormalities in adolescent population.

Aim: The aim of this study was to estimate the prevalence of metabolic syndrome using Pediatric International Diabetic Federation definition and compare it with estimates of Adult Treatment Panel III definition among adolescents in Northern India.

Material and methods: At total of 899 adolescents attending school (aged 10-18 years) participated in this population-based prospective study. All the clinical and biochemical assessment was done after proper consent. The metabolic syndrome was determined by the National Cholesterol Education Program Adult Treatment Panel III definition modified for age and Pediatric international diabetic federation definition.

Results: The prevalence of metabolic syndrome was 3.5% according to Adult Treatment Panel III criteria and 1.5% based on International Diabetic Federation criteria. No significant gender difference was observed in the distribution of metabolic syndrome. Hypertriglyceridemia was the most common and abdominal obesity the least common constituent of metabolic syndrome.

Conclusion: This study provides the first estimates of metabolic syndrome using pediatric international diabetic federation definition in adolescent population from northern India.


Metabolic syndrome; Waist circumference; Dyslipidemia


Insulin resistance syndrome was first described by Reaven [1] as the concomitant presence of abdominal adiposity, dyslipidemia, hypertension and insulin resistance or type 2 diabetes mellitus and described this syndrome complex as syndrome X. Although researchers coined different terms to this syndrome complex [2,3], the term metabolic syndrome (MS) was coined by Adult Treatment Panel III -National Cholesterol Education Program (ATPIII-NCEP) to use a common definition in the global context and consider other causal factors related with abdominal fat excess [4].

Childhood obesity is an important risk factor for the development of MS in children and adolescents [5]. MS in children and adolescents has been linked to hostile intrauterine environment leading to intrauterine growth retardation, low birth weight and small for gestational age [6,7]. Other factors can be genetic, socio-economic, environmental (obesogenic environment), urbanization, unhealthy diet and increasingly sedentary lifestyle [8,9]. Obese children with metabolic syndrome are at increasing risk of progressing to type 2 diabetes and cardiovascular disease in later life [10]. Early identification of children at risk and preventive action are therefore very important. However, to date, no unified definition exists to assess risk or outcomes in children and adolescents, and existing adult-based definitions of the metabolic syndrome are not appropriate to address the problem in this age group. This disagreement in proposing a unified definition mainly results from the difficulty in establishing cutoff points due to the absence of clinical manifestations of cardiovascular diseases in childhood [11]. There are doubts whether cutoff points must be absolute or expressed in percentiles considering age, gender and pubertal stage due to rapid growth in childhood and mainly in adolescence [12]. Lately, International diabetic federation (IDF) proposed a consensus definition of MS for children and adolescents so as to obtain a universally accepted tool which is easy to use for the early diagnosis. This will also help us to take preventive measures before the child or adolescent develops diabetes or cardiovascular disease, thus becoming the major organization to do so [10].

Different studies have shown varied prevalence of MS using different cutoffs and criteria. In the third National Health and Nutrition Examination Survey (NHANES III) conducted between 1988 and 1994, the prevalence of MS was 6.8 percent among overweight adolescents and 28.7 percent among obese adolescents [13].

Studies from south Asian children including India have shown high prevalence of MS. This could be attributed to the high level of insulin resistance among them [14]. Also the relation between adiposity and insulin concentrations is stronger in South Asian children than among White Caucasian children [12]. South Asian children have higher mean fasting levels of insulin and fasting blood glucose and a higher prevalence of impaired fasting glucose than European Caucasians [15,16]. Although limited, studies from north India have shown high prevalence of MS like other south Asian studies [17,18]. The prevalence estimates of MS using IDF definition are not available from India. We therefore analyzed data according to ATP III definition of metabolic MS, examined its demographic variation and estimated the prevalence according to IDF definition which happens to be the latest organized definition [10] in the northern Indian state of Kashmir.

Materials and Methods

Study design

This cross sectional population based study was carried out in a representative sample of 889 children aged 10-18 years selected from different schools. The study was conducted in a multistage manner over a period of 2 years (October, 2009- October, 2011) among children selected by a simple randomization method. There are total 6 towns amongst which four are major and urbanized. There are approximately five to eight schools in each town. Four schools with enrollment more than 1000 were selected from four major towns. All the schools selected were of equal standard with almost equal children population and distribution. From each school, following children were selected in first phase. a) Children aged 10-18 yrs. (b) Children who had consent from parents. (c) Children who were not suffering from any metabolic disease. (d) Children not on any medication in any form. A total of 1100 children (in all the four schools) were selected in this stage. These children were selected by simple randomization. The sample size for the study was calculated from the formula given by Daniel WW. This formula is based on the assumption of normal approximation.

Finally 889 children turned up for the study. The Study was approved by ethical committee Sheri-Kashmir institute of medical sciences, Srinagar Kashmir; Director Education Kashmir and a proper approval from respective institutional bodies were obtained. The consent from the parents of children for examination and blood sampling was taken after explaining to them the purpose of study. A team consisting of 2-3 doctors, a nurse, lab technician and a helper visited each individual school on prefixed dates.

Sampling method and biochemical measurements

Children were asked to come fasting on the day of sampling (≥ 8 hrs fast). About 10 ml non-heparinised venous blood samples were drawn from non-dominant arm without using tourniquet. Serum was separated within 2 hours of venipuncture, and analysis was done within 24 h. Biochemical parameters were analyzed with commercially available enzymatic reagents (Audit Diagnostics, Ireland) adapted to the Hitachi 912 auto analyzer.

Anthropometric measurements

All subjects underwent anthropometric assessment like measurement of height, weight, Body mass index (BMI), waist circumference (WC) and measurement of blood pressure. Body weight was measured by an electronic scale (Filizola®) to the nearest 0.1 kg while the school children were barefoot and wearing light clothes. Height was determined by a portable Seca® stadiometer to the nearest, according to norms proposed by the World Health Organization (WHO, 1995) [3]. BMI (weight in kilograms divided by the squared height in meters) was calculated by using the measured height and weight and converted to percentiles for age in months and gender by using the Center for Disease Control and Prevention (CDC, 2000) growth charts and computer software Epi-Info® version 3.2 (2004) [19]. Indian BMI Percentiles were used to classify children in different classes [20]. WC was measured midway between the rib cage and the superior border of the iliac crest by using a milli-metric non-extensible and nonelastic measuring tape (Sanny®) in midrespiration and inferences were drawn in percentiles.

Blood pressure was measured by the mercury sphygmomanometer method after the child had been sitting at rest for a minimum period of 5 minutes, and the cuff involved 80% of the right arm’s circumference. The arm rested on a support surface at the level of the precordium. Three variable cuff sizes were used according to the child’s brachial circumference. Blood pressure was measured three times in three different days only when the first measurement was above 95th percentile according to gender, age and height, based on The Fourth Report on the Diagnosis, Evaluation, and Treatment of High Blood Pressure in Children and Adolescents [21].

Definitions of MS

Metabolic syndrome was defined using modified ATPIII criteria [3,22,23] as well as IDF criteria [10] and the results were compared with each other.

ATPIII criteria modified for age defines the presence of metabolic syndrome when three of the following criteria are met: (1) Triglycerides ≥ 110 mg/dl (2) High density lipoprotein cholesterol (HDL-C) ≤ 40 mg/dl (3) Systolic blood pressure or diastolic blood pressure ≥ 90th percentile for age and gender (4) WC ≥ 90th percentile for age and gender (5) Fasting blood glucose ≥ 110 [24].

According to the IDF definition, an individual aged 10–16 years has the metabolic syndrome if he or she has central adiposity (≥ 90th waist circumference percentile or adult threshold if lower) plus at least two of the following criteria: (1) triglycerides ≥ 150 mg/dl (2) HDL-C <40 mg/ dl (3) systolic blood pressure ≥ 130 mmHg or diastolic blood pressure ≥ 85 mmHg (4) fasting plasma glucose ≥ 100 mg/dl or previously diagnosed type 2 diabetes. For those aged ≥ 16 years, the adult IDF definition of the metabolic syndrome was applied [25].

Statistical analysis

Data were analyzed by SPSS 11.5 version. The prevalence was reported in percentages. Factor analysis and inference were drawn using chi-square test for proportions and Man Whitney U test for comparison of independent groups. A two-tailed P value was used for calculating statistical significance. A p value of <0.05 was taken as statistically significant.


Out of total 1100 children, 899 children turned up for the study. The sample population of 899 children and adolescents was a heterogeneous population and consisted of 311 males and 588 females. Their mean age was 13.4 ± 3.8. The characteristics of the subjects are shown in Table 1.

Parameters Male (N- 311 ) Female (N- 558) Total (N- 869) P Value
Age (years) 11.06 ± 2.7 15.39 ± 3.5 13.45 ± 3.8 0.10
Systolic blood pressure (mm/Hg) 103.41 ± 8.2 108.07 ± 11.3 105 ± 10.3 0.09
Diastolic blood pressure (mm/Hg) 66.34 ± 5.9 71.37 ± 7.7 69.11 ± 7.4 0.09
Waist circumference (cm) 55.69 ± 12.2 70.47 ± 11.4 63.84 ±13.9 .01
Fasting blood glucose (mmol/L) 4.70 ± 0.71 4.76 ± 0.52 4.73 ± 0.62 0.59
Triglycerides (mmol/L) 1.34 ± 0.32 1.38 ± 0.41 1.36 ± 0.37 0.50
HDL-cholesterol (mmol/L) 1.06 ± 0.12 1.08 ± 0.14 1.07 ± 0.13 0.30
 BMI (CDC) (kg/m2) 18 ± 2.1 23.2 ± 2.3 20.7 ± 2.0 0.04
 Weight 41.5 ± 8 .7 45 ± 9.4 43.5 ±  8.6 1.0

Table 1: Clinical and Laboratory characteristics of the sample.

According to ATP III criteria, 3.5% children aged 10-18 years had MS whereas 1.5% children of similar age group had MS according to IDF criteria (Table 2). The prevalence of metabolic syndrome in males vs. females was statistically insignificant in both criteria. Factor analysis according ATPIII criteria showed that hypertriglyceridemia was most prevalent factor followed by low HDL cholesterol, hyperglycemia, hypertension, and waist circumference. Among these factors hypertriglyceridemia and hyperglycemia showed statistically significant difference between two sexes (Table 2).

  Sample size (n) Metabolic syndrome* Metabolic syndrome** Abdominal obesity# Hypertriglyceridemia# Low HDL cholesterol# High blood pressure# Hyperglycemia#
Total participants 899 3.60% 1.50% 3.70% 31% 17% 4% 9.80%
Age (years)
12-Oct 218 2.70% 0.40% 4.70% 33% 17% 2.80% 18.80%
13-15 219 6.80% 2.70% 10.00% 27.40% 21.90% 7.80% 13.60%
16-18 462 2.50% 1.50% 6% 32.10% 17.20% 4.50% 3.40%
P for linear trend   0.01 0.08 0.04 0.9 0.1 0.03 0.01
Male 311 3.80% 1.90% 3% 26% 18% 4% 12%
Female 588 3.50% 1.30% 4% 35% 16% 3.80% 5%
P   0.69 0.12 0.2 0.03 1 1.01 0.02

Table 2: Unadjusted prevalence of the metabolic syndrome and its components based on ATPIII criteria and pediatric criteria from the IDF among North Indian Adolescents aged 10- 18 years.

In both criteria, high prevalence of MS was seen in age group 13-15 years and the difference across different age groups was significant in ATPIII criteria. All metabolic parameters except high blood sugar were highly prevalent in the same age group which corresponds to puberty age. Again abdominal obesity, blood pressure and hyperglycemia showed statistically significant difference across different age groups (Table 2).


This study could be the first study from India which used recently proposed pediatric IDF definition for evaluating the prevalence of MS and compared it with estimates of ATPIII criteria. Like its adult definition, the pediatric definition emphasizes the central role of obesity. Studies across the world have shown different prevalence estimates owning to lack of use of uniform definitions in their studies [26,27].

Low prevalence of MS was observed when IDF definition was applied, which could be due to the fact that the IDF retained the adult cut points of its adult definition [10]. ATPIII uses lower cutoffs for blood pressure and triglyceride levels. Data from India though limited has shown prevalence in non obese children ranging from 0.8% to 5% [17,18]. The prevalence of MS in non obese children in our study is alarming and needs attention.

Friend et al. [28] did a systematic review of different databases, collected details of overall prevalence and prevalence within groups categorized by obesity, gender, age, and ethnicity. This study was conducted in Scotland. The median prevalence of metabolic syndrome in whole populations was 3.3% (range 0%-19.2%), in overweight children was 11.9% (range 2.8%-29.3%), and in obese populations was 29.2% (range 10%-66%). Within-study analyses confirmed higher prevalence for obese compared to overweight (P=0.012) and obese compared to nonobese, nonoverweight children (P<0.001). Withinstudy analyses also revealed higher median metabolic syndrome prevalence for boys compared to girls (5.1% versus 3.0%, P<0.001) and also in older compared with younger children (5.6% versus 2.9%, P=0.001) [28]. Similarly a study from Tailor et al. showed that the prevalence estimates from general population and community-based sampling ranged from 1.2% to 22.6% with rates of up to 60% observed in the overweight and obese [29].

According to Barker’s Hypothesis, there is a links between reduced birthweight and increased risk of coronary heart disease, diabetes, hypertension and stroke in adulthood [30]. A systematic review reported that the majority of 80 studies on adults and children showed that there is a 2-mmHg decrease in systolic blood pressure per kilogram increase in birthweight [31]. This relationship is less well defined in adolescence, possibly because ‘tracking’ of blood pressure with age is disturbed at the time of the adolescent growth spurt.

Maximum prevalence (6.8% with ATP and 2.7% with IDF) was seen around the puberty (defined by age and not evidenced clinically or biochemically). No statistically significant difference was seen between two sexes although significant differences were observed across age groups. The effects of obesity on early puberty development have been shown though not conclusively established [32,33]. However, effects of puberty on obesity are not known. Normal puberty in girls is accompanied by increases in BMI and subcutaneous adiposity [29]. Also lipid abnormalities, particularly in males, are affected by puberty [34]. Whether these normal physiological processes have any significance in the development of obesity and MS around puberty in susceptible persons needs further elucidation.

Lipid abnormalities in the form of high triglyceride levels are the common abnormalities found in our study along different age groups. These observations are consistent with observations made in other south Asian studies [35]. Asian Indian population is highly insulin resistant even in the presence of only mild increase of BMI or abdominal adiposity [36]. Importantly, a higher level of hyperinsulinemia was reported in India neonates, as recorded at birth, compared with White Caucasian neonates [37].


This study provides the first estimates on the prevalence of MS with ATPIII and pediatric IDF definition in northern Indian Adolescent population. Both the definitions showed high prevalence around the age of puberty. Immediate lifestyle modifications are needed to control the obesity epidemic and its metabolic consequences. Furthermore, research is needed to know the effects of puberty on obesity and its late consequences.


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