Prevalence of Type 2 diabetes in urban and rural Chinese populations in Qingdao, China

Authors: Dong, Y.¹; Gao, W.; Nan, H.; Yu, H.²; Li, F.³; Duan, W.⁴; Wang, Y.⁵; Sun, Bin¹; Qian, R.⁶; Tuomilehto, J.; Qiao, Q.

Source: Diabetic Medicine, Volume 22, Number 10, October 2005 , pp. 1427-1433(7)

Publisher: Wiley-Blackwell

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Abstract:

Aims

To determine the prevalence of diabetes in the Chinese adult population in rural and urban areas of Qingdao city. Methods

A population-based cross-sectional study of diabetes was performed in 12 436 (5346 men) Chinese adults (20–74 years old) from 2001 to 2002. Fasting capillary whole blood glucose test (FCG) was performed in all participants and a 2-h 75-g oral glucose tolerance test in those with FCG

6.1 mmol/l following initial screening. The 1999 World Health Organization diagnostic criteria for diabetes were used. Results

The age-standardized prevalence of diabetes was 6.1% (4.1% for undiagnosed and 2.1% for previously known diabetes) in adults aged 20–74 years. Diabetes prevalence increased with age up to the oldest age group (70–74); in subjects over 50 years of age, the prevalence reached 10%. Men tended to have a higher prevalence of known diabetes than women, whereas the prevalence of undiagnosed diabetes was lower in men than in women (4.6% vs. 3.3%, d.f. = 1, P = 0.001). Diabetes was more prevalent in the urban than in the rural population (6.9% vs. 5.6%, d.f. = 1, P < 0.001). However, the proportion of undiagnosed diabetes was higher in the rural than in the urban areas (70.5% vs. 58.0%, d.f. = 1, P < 0.001). Conclusions

The prevalence of Type 2 diabetes in Qingdao city is moderately high, but much higher than reported in 1996. The large proportion of undiagnosed cases of diabetes indicates the lack of public awareness of diabetes and shortage of medical facilities. In view of the huge population in China, the results of this study emphasize the need to improve the early detection and prevention of diabetes in China to prevent the emerging diabetes epidemic.

Diabet. Med. (2005)

Keywords: prevalence; Type 2 diabetes mellitus

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1464-5491.2005.01658.x

Affiliations: 1: Qingdao Endocrinology and Diabetes Institute, Qingdao, China, 2: Department of Endocrinology, People's Hospital of Pingdu, 3: Department of Endocrinology, People's Hospital of Jiaonan, 4: Department of Endocrinology, Qingdao Municipal Hospital and 5: Department of Endocrinology, The Medical School Hospital of Qingdao University, Qingdao, 6: Department of Endocrinology, Beijing University First Hospital, Beijing, China, and

Publication date: 2005-10-01

Prevalence of Type 2 diabetes in urban and rural Chinese populations in Qingdao, China

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