title: The Indian Council of Medical Research-India Diabetes (ICMR-INDIAB) study: methodological details.
abstract: BACKGROUND
  Currently available estimates of diabetes prevalence in India are based on published data derived from very few studies. The Indian Council of Medical Research-India Diabetes (ICMR-INDIAB) study is a community-based survey conceived with the aim of obtaining the prevalence rates of diabetes in India as a whole, covering all 28 states, the National Capital Territory of Delhi, and two of the union territories in the mainland of India, with a total sample size of 124,000 individuals.
  
  
  METHODS
  A stratified multistage sampling design has been used. In all study subjects, a structured questionnaire was administered and anthropometric parameters and blood pressure were measured. Fasting capillary blood glucose was first determined using a glucose meter. An oral glucose load was then administered to all subjects except those with self-reported diabetes, and the 2 h post-load capillary blood glucose was estimated. In every fifth subject, a fasting venous sample was collected for measurement of lipids and creatinine, a resting 12-lead electrocardiogram was performed, and dietary assessment questionnaire was administered. In all diabetic subjects, an additional diabetes questionnaire was used and a fasting venous sample drawn for glycated hemoglobin.
  
  
  RESULTS
  All biological samples collected were analyzed in a central laboratory. All data collected were stored electronically. Quality control was achieved through multiple tiers of checks.
  
  
  CONCLUSIONS
  The ICMR-INDIAB study is the first of its kind attempting to provide accurate and comprehensive state- and national-level data on diabetes prevalence in India.
authors: Madras Diabetes Research Foundation, Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Noncommunicable Diseases Prevention and Control, IDF Centre of Education, Chennai, India.
authors: Ranjit Mohan
authors: RM
authors: Anjana
authors: Rajendra
authors: R
authors: Pradeepa
authors: Mohan
authors: M
authors: Deepa
authors: Manjula
authors: M
authors: Datta
authors: Vasudevan
authors: V
authors: Sudha
authors: Ranjit
authors: R
authors: Unnikrishnan
authors: Lalith M
authors: LM
authors: Nath
authors: Ashok Kumar
authors: AK
authors: Das
authors: Sri Venkata
authors: SV
authors: Madhu
authors: Paturi Vishnupriya
authors: PV
authors: Rao
authors: Deepak Kumar
authors: DK
authors: Shukla
authors: Tanvir
authors: T
authors: Kaur
authors: Mohammed K
authors: MK
authors: Ali
authors: Viswanathan
authors: V
authors: Mohan
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D035843:Biomedical Research / Q000379:methods* / Q000458:organization & administration*; D003430:Cross-Sectional Studies; D003920:Diabetes Mellitus / Q000097:blood / Q000453:epidemiology / Q000628:therapy*; D004704:Endocrinology / Q000379:methods* / Q000458:organization & administration; D015340:Epidemiologic Research Design; D005260:Female; D006801:Humans; D007194:India; D008297:Male; D008875:Middle Aged; D012955:Societies, Medical / Q000458:organization & administration / Q000592:standards; D011795:Surveys and Questionnaires; D055815:Young Adult