ABSTRACT
Objective To analyze the assessment results of iodine deficiency disorders(IDD) External Quality Control Laboratories at all levels in Guizhou province and the network operation to further standardize and improve the laboratory, improve network performance, provide reliable laboratory quality assurance for epidemiological surveillance and control of IDD and reliable decision-making. Methods The results of different level of IDD labs in Guizhou that took part in the entire country's IDD lab exo-network quality control examination of 1999 - 2008, which organized by the nation iodine deficiency disorder reference lab were analyzed. Results In the past 10 years, except the provincial laboratory examination results of urinary iodine in 2000 was failed, the other results were all qualified in the rest 9 years;iodized salt examination results were qualified. The urinary iodine laboratory response rate of Guizhou provinces and municipalities(state, district), from 1999 to 2002, were 88.9%(8/9), 66.7%(6/9), 77.8%(7/9), 66.7%(6/9), respectively, and the rate was stable at 100% from 2003 to 2008. Qualifying rate reached 100% in 2007, the remaining 9 years were 33.0%(3/9) - 88.9%(8/9). The iodized salt laboratory response rates were 100%(9/9) in 2000 - 2008. The pass rates were 77.8%(7/9), 88.9%(8/9),77.8%(7/9) from 2001 to 2003, 88.9%(8/9) in 2007, and the remaining 5 years 100%. Response rate of iodized salt laboratory at the county level that participated in the External Quality Control were 66.7% (20/30), 90.0%(27/30), 80.0% (24/30), 96.7% (29/30) from 2000 to 2003, respectively, and 2006 was 96.7% (29/30), and the remaining four years were all 100% (30/30). The pass rates in 2000 - 2008 were between 53.3% (16/30) -93.3%(28/30). Conclusions The accuracy of test results of external quality controls and the normal operation of the network at all levels of laboratories is closely related to the IDD laboratory conditions, detection techniques, and the degree of attention of relevant departments and professional bodies.
ABSTRACT
Objective To evaluate the effect of health education in controlling the iodine deficiency diserders(IDD) in order to provide reference data for the further prevention and control. Methods Each village of 3 towns in Congjiang County was selected in 2007, where the health education lasting for 10 months had been implemented in the school students of 3-6 grade and the villagers. The school students of 3-6 grade and 30 housewives in the villagers were investigated for their IDD control knowledge, the salt consuming conditions as well as the sales of both rough and fine salt at a salt retail site in each village before and after the health education was implemented. Results The awareness rate of the knowledge of IDD control in the students and housewives was 91.4% (581/636) and 78.3% (282/360), respectively after intervention, which significantly increased (χ2= 532.044, 326.117, both P < 0.01) compared with the rate of 28.2% (184/652) and 11.4% (41/360) before intervention. The proportion of consuming fine salt was 91.8%(146/159) and 95.6%(86/90), significantly inereased(χ2= 236.623, 135.350, both P < 0.01) compared with 6.1%(10/163) and 7.8% (7/90) found before intervention. The selling proportion of fine salt at the salt retail site in the village was 60.0%(900/1500), significantly increased(χ2= 824.176, P < 0.01) compared with 10.0%(150/1500) before intervention. Conclusions Health education and promotion is solid foundation for effectively controlling IDD, through which the students and villagers are actively and voluntarily involved in the program and hence have formed good living and hygiene habits, thus expected effect has been obtained.