RESUMO
Objective To study the epidemiological characters and risk factors of nephrolithiasis in an island area,Putuo district, Zhoushan city.Methods With stratified cluster random sampling method,5 915 residents aged above 15 yrs and resided 5 yrs and above in Putuo district,Zhoushan city were selected,and surveyed with Ultrasound examination and questionnaire.X~2 tendency test and non-condition Logistic regression were conducted by means of SPSS software.Results After single factor analysis and Multi- factor analysis,the factors entered the model finally were sex(OR=0.543,95%CI:0.454~0.649),education status(OR=1.253,95%CI: 1.151～1.364),dietary habit(OR=0.882,95%CI:0.823～0.944),BMI(OR=1.274,95%CI:1.142～0.1.421),urinary tract infection(OR= 2.126,95%CI:1.663～2.718).Conclusion Risk factors for nephrolithiasis include dietary habit,education status,and urinary tract infection.The vegetables are the protection factor.