Prevalence of generalized & abdominal obesity in urban & rural India--the ICMR-INDIAB Study (Phase-I) [ICMR- NDIAB-3].
OBJECTIVE
Overweight and obesity are rapidly increasing in countries like India. This study was aimed at determining the prevalence of generalized, abdominal and combined obesity in urban and rural India.


METHODS
Phase I of the ICMR-INDIAB study was conducted in a representative population of three States [Tamil Nadu (TN), Maharashtra (MH) and Jharkhand (JH)] and one Union Territory (UT)[Chandigarh (CH)] of India. A stratified multi-stage sampling design was adopted and individuals ≥ 20 yr of age were included. WHO Asia Pacific guidelines were used to define overweight [body mass index (BMI) ≥ 23 kg/m [2] but < 25 kg/m [2]], generalized obesity (GO, BMI ≥ 25 kg/m [2], abdominal obesity (AO, waist circumference ≥ 90 cm for men and ≥ 80 cm for women) and combined obesity (CO, GO plus AO). Of the 14,277 participants, 13,800 subjects (response rate, 96.7%) were included for the analysis (urban: n = 4,063; rural: n = 9737).


RESULTS
The prevalence of GO was 24.6, 16.6, 11.8 and 31.3 per cent among residents of TN, MH, JH and CH, while the prevalence of AO was 26.6, 18.7, 16.9 and 36.1 per cent, respectively. CO was present in 19.3, 13.0, 9.8 and 26.6 per cent of the TN, MH, JH and CH population. The prevalence of GO, AO and CO were significantly higher among urban residents compared to rural residents in all the four regions studied. The prevalence of overweight was 15.2, 11.3, 7.8 and 15.9 per cent among residents of TN, MH, JH and CH, respectively. Multiple logistic regression analysis showed that female gender, hypertension, diabetes, higher socio-economic status, physical inactivity and urban residence were significantly associated with GO, AO and CO in all the four regions studied. Age was significantly associated with AO and CO, but not with GO.


CONCLUSIONS
Prevalence of AO as well as of GO were high in India. Extrapolated to the whole country, 135, 153 and 107 million individuals will have GO, AO and CO, respectively. However, these figures have been estimated from three States and one UT of India and the results may be viewed in this light.
Rajendra
R
Pradeepa
Ranjit Mohan
RM
Anjana
Shashank R
SR
Joshi
Anil
A
Bhansali
Mohan
M
Deepa
Prashant P
PP
Joshi
Vinay K
VK
Dhandania
Sri Venkata
SV
Madhu
Paturi Vishnupriya
PV
Rao
Loganathan
L
Geetha
Radhakrishnan
R
Subashini
Ranjit
R
Unnikrishnan
Deepak Kumar
DK
Shukla
Tanvir
T
Kaur
Department of Epidemiology & Diabetology, Madras Diabetes Research Foundation & Dr Mohan's Diabetes Specialities Centre, Chennai, India.
Viswanathan
V
Mohan
Ashok Kumar
AK
Das
D000328:Adult; D001208:Asia; D015992:Body Mass Index; D003920:Diabetes Mellitus / Q000453:epidemiology*; D005260:Female; D006801:Humans; D006973:Hypertension / Q000453:epidemiology*; D007194:India; D008297:Male; D008875:Middle Aged; D056128:Obesity, Abdominal / Q000196:embryology* / Q000473:pathology; D012307:Risk Factors; D012424:Rural Population; D014505:Urban Population; D055105:Waist Circumference