Abstract
Objective: To assess the association of indicators of general and abdominal obesity
with the prevalence of type 2 diabetes (T2DM) and intermediate hyperglycaemia
(IHG) in the Chinese population.
Methods: We used data of 50 905 adults aged 18¿79 years in the 2002 China
National Nutrition and Health Survey. Recommended Chinese cut-off values were
used for BMI (24 kg/m2) and waist circumference (WC; 85 cm in men, 80 cm in
women). Optimal cut-offs for waist:height ratio (WHtR) were determined from
analyses of receiver-operating characteristic (ROC) curves.
Results: The prevalence of T2DM and IHG was 2?6% and 1?9% respectively. ROC
curve analyses indicated 0?5 as the optimal cut-off value for WHtR in both sexes.
High BMI, WC and WHtR were all associated with the prevalence of glucose
tolerance abnormalities, with the highest prevalence ratio (PR) for high WHtR
(men: PR52?85, 95% CI 2?54, 3?21; women: PR53?10, 95% CI 2?74, 3?51). When
combining BMI and WHtR, in men either a high BMI or a high WHtR alone was
associated with increased risk. Among women, a high BMI without a concomitant
high WHtR was not associated with increased glucose tolerance abnormalities
risk, whereas a high WHtR was associated with risk irrespective of BMI.
Conclusions: Among the Chinese adult population measures of central obesity are
better predictors of glucose tolerance abnormalities prevalence than BMI. AWHtR cutoff
point of 0?5 for both men and women can be considered as optimum for predicting
(pre-) diabetes and may be a useful tool for screening and health education.
Original language | English |
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Pages (from-to) | 1078-1084 |
Journal | Public Health Nutrition |
Volume | 12 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2009 |
Keywords
- body-mass index
- to-height ratio
- waist circumference
- national-health
- risk-factors
- cardiovascular-disease
- fat distribution
- cutoff points
- type-2
- nutrition