[Orthogonal factor analysis on metabolic syndrome].

To elucidate the principal of orthogonal factor analysis, using an example of factor analysis of metabolic syndrome. The basic structures and the fundamental concepts of orthogonal factor analysis were introduced and data involving 1877 women aged of 35-65 years, selected from a cross-sectional study, which was conducted in 1998 - 2001 in Shanghai, were included in this study. Factor analysis was carried out using principle components analysis with Varimax orthogonal rotation of the components of the metabolic syndrome.

[Serum lipid profile changes of the adults in Shanghai communities].

Objective: To explore the adult lipid profile of Huayang community from 1998 to 2000 and Caoyang communities in 2001.

Methods: Representative serum samples of 5628 adults (aged 20 - 95 years) were obtained in Huayang and Caoyang communities during 1998.9 and 2001.

[Chronic renal disease in diabetic and prediabetic subjects: a community-based study in Shanghai].

Objective: The aim of the present study was to assess the prevalence and risk factors of chronic renal disease in hyperglycemic population of Shanghai Caoyang Community.

Methods: Microalbuminuria was determined by measuring urinary albumin-to-creatinine ratio (ACR) and glomerular filtration rate (GFR) was estimated from fasting serum creatinine.

Results: A total of 406 Shanghai Chinese, with the average age of 67.

[Study on in-plane optical anisotropy of semiconductor materials by reflectance difference spectroscopy].

In the present review, the measuring principle of reflectance difference spectroscopy (RDS) is given. As a powerful tool in the surface and interface analysis technologies, the application of RDS to the research on semiconductor materials is summarized along with the origins of the in-plane optical anisotropy of semiconductors. And it is believed that RDS will play an important role in the electrooptic modification of Si-based semiconductor materials.

[Prevalence of peripheral vascular disease in diabetics and impaired glucose regulation subjects: a community-based study].

Objective: To investigate the prevalence of peripheral vascular disease (PVD) in patients with diabetes mellitus (DM) and impaired glucose regulation (IGR).

Methods: Follow-up 5 years after the previous epidemiologic study of metabolic syndrome in Chaoyang community, Shanghai, 2000 - 2001 was conducted among 717 patients with DM or IGR. Questionnaire survey about general status and DM-related history and behaviors, including smoking, was carried out.