Objective To examine the relationship between smoking and tobacco-related mortality in a cohort of the aged Chinese armymen.Methods A cohort study was carried out in Xi'an,China from 1987 to 2005.A total of 1 268 retired male military cadres aged 55 or older were examined in 1987 and followed up in the next 18 years.At baseline,388 men were non-smokers,461 were former smokers,and 419 were current smokers.The current smoking rate was 33.04%,Quitted rate was 52.39%.The terminal main observation items included all-cause and tobacco-associated mortality.Results Up to Jun 30,2005,a total of 491 subjects died.Compared with non-smokers,the relative risks(95% confidence intervals(CI)) of ever-smokers for all-cause deaths,chronic obstructive pulmonary disease(COPD),lung cancer,and coronary heart disease(CHD) were 1.24(1.01-1.53),1.91(1.06-3.46),2.91(1.36-6.23),and 1.15(0.68-1.93),respectively.Compared with current smokers,the risks of total mortality and death from lung cancer for former smokers were decreased by 66.7% and 14.98%,respectively.Conclusions Cigarette smoking was a major death risk factor in the cohort and quitting smoking could save lives.

Objective To explore the relationship between Body Mass Index (BMI), Waist-Hips-Ratio (WHR) and Blood lipids.Methods Body measurements including BMI, WHR and body fat percentage (FAT%), and blood lipid profile assessment and liver ultrasonography were conducted on 350 employees from Shanghai Waigaoqiao Free Trade Zone from January 2006 to August 2007. All subjects were classified into a group of overweight/obesity and a group of normal body weight based on their BMI. BMI, WHR, FAT%, blood lipid profile, the prevalence of fatty liver and dyslipidemia were compared between the two groups. Results WHR, FAT%, the level of TG and TC in overweight/obesity group were significantly higher than that in normal body weight group(P=0.000), but the level of HDL-C was significantly lower than that in normal body weight group (P=0.000). The prevalence of central obesity (88.70%), fatty liver (72.32%), and hypertriglyceridemia (49.7%),hypercholesterolemia (33.89%), low HDL-C (40.68%) in overweight/obesity group were significantly higher than those in normal body weight group (P=0.000). Concludes BMI, WHR were associated with blood lipids. Early identification and intervention on these people with high risk of cardiovascular diseases are possible by body measurement, which are significant for predicting and reducing the occurrence of cardiovascular diseases.

Objective To explore the risk factors and protective factors for stomach cancer in Ganyu county.Methods Data of 319 pairs of new stomach cancer cases and health controls(1:1 matched)were studied by conditional Logistic regression method on the influential factors.Results The main risk factors for stomach cancer were the habits of eating hot foods(OR= 2.21,95%CI:1.57～3.12),the history of upper gastrointestinal inflammation(4.26,2.59～7.03),family history of cancer(2.29, 1.37～3.82);The main protective factors were often eating raw garlic(OR=0.64,95%CI:0.42～0.96),regular drinking tea(0.37, 0.25～0.54).Conclusion Unhealthy dietary habits,the history of upper gastrointestinal inflammation and family history of cancer are related to stomach cancer,while eating raw garlic and regular drinking tea may be effective in preventing the occurrence of stomach cancer.The results could be applied in stomach cancer prevention activities in Ganyu county.

Objective To investigate.the survival rates in a follow-up group of patient with primary liver cancer.Methods The follow-up data of new primary liver cancer cases between year 2001-2004 in Xuhui district was investigated.The age distribution of patients was described.Survival rate was analyzed with single and multiple Cox proportional hazards regression model,respectively.Results The age proportion distribution of patients showed double apexes with one in age 45～50 and another in age 70～75.The arithmetic mean of survival month was 16.4 with 95%CI 14.8～18.1 and median month was 6.9.It was no significance between male and female.Patients who had liver operation owned longer survival time,RR=0.315 5(95%CI 0.243 2～ 0.4093).The sutdy showed 5-year survival rate was 40.90%and 3.95%for patients with or without operation,respectively.It had no significant effect on survival time by gender,age and family history.Conclusion The screening test and intervention in high-risk people shall be done preferentially before peak age,so as to find primary liver cancer earlier,and the more patients can accept a suitable surgery care,the more they can obtain longer survival time.

Objective To explore the risk factors for asthma in children.Methods A 1:1 matched and hospital-based case-control study was conducted to analyses risk factors for asthma in 300 pairs of children by logistic regression analysis. Results The result of univariate Logistic regression analysis showed that there were 17 related factors for children asthma, including disease history of parents in respiratory system,family income,atopie character,history of acute respiratory infections, eating habit,the amount of sea foods intakes,foam plastics,family decoration,the way of exhaust fume in kitchen,the exhaust effectiveness,raising pet in house,family history of asthma,family history of allergic rhinitis,family history of food allergy,dust allergy of parents,systemic therapy after the first attack.With multivariate Logistic regression analysis,7 factors were entered the model,6 risk factors including father's history of respiratory diseases(OR 3.771,95%CI 1.533～9.278),low family income(OR 1.503, 95%CI 1.258～1.795),atopy(OR 3.788,95%CI 2.368～6.058),meat-eating habit(OR 2.042,95%CI 1.481～2.815),asthma history of family members(OR 1.710,95%CI 0.988～2.958),the family history of allergic rhinitis(OR 1.991,95%CI 1.234～3.211), and 1 protective factor of raising pet in house(OR 0.443,95%CI 0.265～0.739).The coefficients of these factors in multivariate logistic regression model were 1.327、0.407、1.322、0.714、0.536、0.689、and-0.814 respectively.Conclusion Children asthma was a multi-factorial complex disease,and the interaction of environmental and genetic risk factors played an important role in the onset of this disease.

Objective To understand the mortality rate and cause of the injury in Hebei province in order to provide scientific theoretical basis for drawing up effective prevention measures.Methods The injury deaths data was collected from 18 surveillance spots in Hebei province during 2004—2005,and the injury was classified with ICD-10 and the corresponding mortality rates were calculated.Results The average injury mortality rate was 54.02/100 000(the age-adjusted rate was 51.62/100 000).It was the 5 th-ranked cause of death.The leading five causes of injury were traffic injury by motor vehicles, traffic injury by non-motor vehicles,suicide,poisoning and fall,which accounted for 23.96%,22.05%,13.10%,11.99%, 5.62%,respectively.The average injury mortality rate in rural(58.48/100 000)was higher than in urban(31.60/100 000)(?~2= 255.82,P

Objective To describe the epidemiological characteristics and relative factors of adults with overweight and obesity in Liaoning province.Methods With multi-stage randomized cluster sampling,8 120 cases were selected from the 540 families in seven urban and suburb districts of Liaoning province.data of overweight and obesity history and social- economic status for residents aged 18 yrs and over were investigated by face-to-face interview,weight and height of these subjects were measured.Result the overweight rate was 33.9%,the obesity rate was 13.7%.The prevalent rates of overweight and obesity were increased with the age and it was higher in city than in rural and in female than in male(all P

Objective To explore the diagnosis criterion of acute and chronic radiation oral mucositis induced by ionazition correctly. Methods 40 patients who were given radiotherapy because of head-neck cancer and 40 patients who were irradiated in the whole body for hematogenic stem cell transplant pretreatment were observed and analyzed. They were diagnosed by symptom and sign. Results 28 patients who were given radiotherapy were found acute oral mucous membrane change when cumulate radiation dose attained 30 Gy. The incidence of acute radiation oral mucositis was 70 percent. 20 TBI patients were found oral ulcer in 7 to 8 Gy radiation dose. The incidence of oral ulce was 50 percent. Conclusion The advance limit of irradiated dose for acute and chronic radiation oral mucositis are 20～30 Gy and 50～60 Gy.

Objective To study the relationship between overweight, obesity and blood pressure among children living in urban Beijing. Methods A total of 4 267 pupils aged 9～10 years were randomly selected. Overweight and obesity were defined by age and sex specific BMI classification reference for Chinese children. Hypertension was defined by age, sex and height specific reference for US children. Results The prevalence of overweight and obesity in boys was 19.4% and 21.2%, in girls was 10.9% and 12.1%, respectively. Mean levels of systolic blood pressure (SBP) and diastolic blood pressure (DBP) have significant different between all study group. The total prevalence of high blood pressure (HBP) was 16.1% for boys and 15.2% for girls, while it was 36.4% and 41.3% among obese boys and girls, respectively. The prevalence of high systolic blood pressure (HSBP), high diastolic blood pressure (HDBP)and HBP gradually increased as weight increased. Compared with the normal weight group, OR(95%CI) for HBP of overweight and obese children were 2.6 (2.1～3.3) and 5.8 (4.7～7.0), respectively. Conclusion Obesity is positive correlation with hypertension in children aged 9～10years of Beijing, and the risk of hypertension was increased with their body weight.

Objective To investigate the factors of Alzheimer’s Disease (AD). Methods A 1:1 matched case-control study was conducted. The study included 129 patients of clinically diagnosed AD and 129 controls selected from Nanchang and Jiujiang areas. The data were analyzed by the conditional logistic regression. Results The results showed the unsociable personality (OR=2.486,95%CI=1.075～6.638),the history of great negative life events (OR=4.125,95%CI=1.706～12.249),using cookers made of aluminum (OR=2.454,95%CI=1.277～5.268) were identified as risk factors for AD. The good family income state (OR=0.324,95%CI=0.106～0.828) and frequently physical exercises (OR=0.258,95%CI=0.104～0.520) were protective factors for AD. Conclusion Alzheimer’s Disease seems to be related to the income state,frequency of physical exercises,personality,big negative life events,using cookers made of Aluminum.