title: Impaired fasting glucose and impaired glucose tolerance in urban population in India.
abstract: OBJECTIVE
  To study prevalence of impaired fasting glucose (IFG) and impaired glucose tolerance (IGT) in urban Indians and their demographic and anthropometric characteristics.
  
  
  METHODS
  Data on capillary blood glucose (OGTT), anthropometric and demography details were available in 10 025 subjects (M : F 4711 : 5314) aged > or = 20 years. Glucose tolerance was categorized as normal, isolated IFG, isolated IGT, IFG + IGT and diabetes using the fasting and 2-h blood glucose (2hBG; 75-g glucose load) values. Subjects with known diabetes were excluded.
  
  
  RESULTS
  Age-standardized prevalences of IFG, IGT and newly detected diabetes were 8.7%, 8.1% and 13.9%, respectively. IFG was more prevalent in women (9.8%) than in men (7.4%) (chi2 = 13.62, P = 0.0002), while the gender differences in IGT (men 8.4%, women 7.9%) and diabetes (men 13.3%, women 14.3%) were not significant. Body mass index and waist circumference were higher in glucose-intolerant groups than in normal glucose tolerance (NGT). Prevalence of diabetes, IGT and IFG + IGT increased with age. Among the IFG, 4% had diabetes and 27.1% had IGT using 2hBG criteria. In IFG, the fasting and 2hBG values were not correlated.
  
  
  CONCLUSIONS
  Prevalences of IFG and IGT were similar in urban Indians and an overlap occurred in only less than half of these subjects. IFG was more common in women. Subjects with IFG were older and had more adverse anthropometric characteristics in comparison with NGT. IFG did not show an increasing trend with age.
authors.affiliation: Diabetes Research Centre & M.V. Hospital for Diabetes, Royapuram, Chennai, India. ramachandran@vsnl.com
authors.forename: A
authors.initials: A
authors.lastname: Ramachandran
authors.forename: C
authors.initials: C
authors.lastname: Snehalatha
authors.forename: K
authors.initials: K
authors.lastname: Satyavani
authors.forename: V
authors.initials: V
authors.lastname: Vijay
mesh_terms: D000328:Adult; D001786:Blood Glucose / Q000032:analysis*; D001827:Body Height; D015992:Body Mass Index; D001835:Body Weight; D003710:Demography; D003920:Diabetes Mellitus / Q000175:diagnosis / Q000453:epidemiology*; D018450:Disease Progression; D005215:Fasting / Q000097:blood*; D005260:Female; D005951:Glucose Tolerance Test; D006801:Humans; D007194:India / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance; D012959:Socioeconomic Factors; D014504:Urban Health
chemical_list: D001786:Blood Glucose