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Increasing trend in the prevalence of Type 2 diabetes and pre‐diabetes in the Chinese rural and urban population in Qingdao, China
Author(s) -
Gao W. G.,
Dong Y. H.,
Pang Z. C.,
Nan H. R.,
Zhang L.,
Wang S. J.,
Ren J.,
Ning F.,
Qiao Q.
Publication year - 2009
Publication title -
diabetic medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.474
H-Index - 145
eISSN - 1464-5491
pISSN - 0742-3071
DOI - 10.1111/j.1464-5491.2009.02832.x
Subject(s) - medicine , diabetes mellitus , population , type 2 diabetes , rural area , demography , china , environmental health , endocrinology , geography , archaeology , pathology , sociology
Aims To determine the secular trend of prevalence of Type 2 diabetes and pre‐diabetes in a Chinese population from 2001 to 2006. Methods Two consecutive population‐based surveys for diabetes were conducted in a randomly selected population aged 35–74 years and living in Qingdao, China in 2001–2002 ( n = 10854) and 2006 ( n = 4416). All participants underwent standardized 2‐h 75‐g oral glucose tolerance tests (OGTTs), along with fasting capillary plasma glucose (FCG) tests in 2006. One urban community underwent OGTTs directly in 2002 ( n = 1815), while a two‐step screening strategy using FCG as a first‐line screening test followed by OGTTs was used in 9039 individuals in 2001. Diabetes and pre‐diabetes was defined according to the 2006 World Health Organization/International Diabetes Federation criteria. Results Based on the results of direct OGTTs, the age‐standardized prevalence of diabetes and pre‐diabetes in urban areas was 12.2 and 15.4% in 2002, whereas the prevalences were 18.8 and 28.7% in urban areas and 14.1 and 20.2% in rural areas in 2006 ( P < 0.001, in urban areas). Using the two‐step screening strategy, the prevalence of diabetes in 2001 was 10.1% in urban and 7.7% in rural areas and 13.8% in urban and 12.2% in rural areas in 2006 ( P < 0.001). Based on the data of the 2006 survey, the two‐step screening strategy missed 30.2% of diabetes cases when compared with the number defined by the direct OGTT approach. Conclusions Qingdao has experienced a marked increase in the prevalence of diabetes and pre‐diabetes in the past 5 years. Intervention to prevent a further increase in the prevalence of diabetes is urgently required.