Poultry consumption and prostate cancer risk: a meta-analysis.

Background. Several kinds of foods are hypothesized to be potential factors contributing to the variation of prostate cancer (PCa) incidence. But the effect of poultry on PCa is still inconsistent and no quantitative assessment has been published up to date.

Association between EGF +61 A>G polymorphism and gastric cancer risk: A meta-analysis.

Previous studies suggested an association between the EGF +61 A>G polymorphism and susceptibility to gastric cancer, but the results have been inconsistent. To draw a more precise risk estimation of the association, we performed a meta-analysis of published studies. PubMed, EMBASE, Google Scholar and the Chinese Wanfang databases were systematically searched to identify relevant studies.

[The incidence discriminant model for close contacts of active tuberculosis patients].

Objective: To establish a discriminant model and to provide a relatively accurate scientific basis for the early diagnosis of tuberculosis (TB) and detection of the close contacts.

Methods: Through logistic regression analysis, key factors were selected according to Bayes theory and key factors of TB incidence of the close contacts were screened as well as a discriminant model was established.

Results: The non-TB incidence discriminant function of the close contacts was described as: Y1= -39.

[Study on the relationship between smoking behavior and other unhealthy behaviors among middle school students in 4 cities of China].

Objective: To explore the situation of smoking behavior among the students of middle school in Beijing, Hangzhou, Wuhan and Urumchi and to analyze the relationship between smoking behavior and several unhealthy behaviors together with psychological troubles to provide evidence in developing an early intervention plan.

Methods: The National Health Education Institute (NHEI) of Chinese Center for Disease Control and Prevention (CDC) provided relevant data on all middle schools in the 4 cities and then U.S.

[Study on health related behaviors and its protective factors of junior middle school students in 4 cities of China].

Objective: To provide accurate data on health related behaviors and protective factors among students in middle schools in China, for developing priorities, programs and policies on health education.

Methods: We used a standard scientific sample selection process developed by American Center for Disease Control and Prevention (CDC) to conduct the questionnaire survey among middle schools from four cities--Beijing, Hangzhou, Wuhan and Urumchi.

Results: Data were found as: 3.