Urine routine screening of 34455 school children in Xiamen city.

【Objective】To find out the prevalence of asymptomatic kidney disease in 3~14 years old children of Xiamen,and explore the way how to find it early and to prevent the chronic kidney disease. 【Methods】35 003 children who were 3~14 years old and stay in Xiamen for more than one year were selected,the first-morning urine routine screening were taken in 34 455 children,two weeks later,the second screening was conducted for that who had abnomal results in the first urining screening.The children who still had abnomal results were requested to follow-up for a long time. 【Results】In the first urinary screening,3 436 children had abnomal results,the positive rate of screening was from 3% to 20.4%,in the second urining screening,the rate was from 0.5% to 1.98%.The positive rate for asymptomatic hematuria was 1.21%,0.03% for asymptomatic protenuria,0.02% for hematuria combined proteinuria in the kindergarden children;while in the elementary school,the abnormalities were 1.01% for asymptomatic hematuria,0.19% for asymptomatic protenuria,0.09% for hematuria combined proteinuria.The abnormalities in asymptomatic protenuria and hematuria combined proteinuria of kindergarden were significantly lower than elmentary school children(P0.05). 【Conclusions】①Mass urinary screening is powerful in finding kidney disease early.②The positive rate of urine routine screening in female is higher than in male,hematuria occurred more and proteinia occurred a few.③Urinary screening in elementary school children tend to find more chronic kidney disease.