Association between hepatitis B virus infection and metabolic syndrome: a retrospective cohort study in Shanghai, China.

Background: Metabolic syndrome (MS) and hepatitis B (HBV) infection are two major public health problems in China. There are few studies about their association, and the results of these studies are contradictory. We conducted a retrospective cohort study to assess the association between MS and HBV in a Shanghai community-based cohort.

Longitudinal trends in prostate cancer incidence, mortality, and survival of patients from two Shanghai city districts: a retrospective population-based cohort study, 2000-2009.

Background: Prostate cancer is the fifth most common cancer affecting men of all ages in China, but robust surveillance data on its occurrence and outcome is lacking. The specific objective of this retrospective study was to analyze the longitudinal trends of prostate cancer incidence, mortality, and survival in Shanghai from 2000 to 2009.

Methods: A retrospective population-based cohort study was performed using data from a central district (Putuo) and a suburban district (Jiading) of Shanghai.

High temperature as a risk factor for infectious diarrhea in Shanghai, China.

Background: Recent studies indicate that ambient temperature could be a risk factor for infectious diarrhea, but evidence for such a relation is limited in China.

Methods: We investigated the short-term association between daily temperature and physician-diagnosed infectious diarrhea during 2008-2010 in Shanghai, China. We adopted a time-series approach to analyze the data and a quasi-Poisson regression model with a natural spline-smoothing function to adjust for long-term and seasonal trends, as well as other time-varying covariates.

[Study on factors causing the delay of access to tuberculosis diagnosis and its influencing factors in migrating tuberculosis patients in Putuo district, Shanghai].

Objective: To describe factors causing the delay of diagnosis among non-resident tuberculosis (TB) patients and to study its implications from demographic, socio-economic aspects in order to provide information to policy makers for TB control programs in Shanghai.

Methods: A historical cohort study through questionnaire interview was conducted in 146 newly diagnosed TB patients. The questionnaire covered the general information of subjects and information on patients' health care seeking experiences from the first symptom to the TB diagnosis in health facilities.