Abstract
Objective To study the follow-up management strategies after improving stoves for controlling coal-burning type endemic fluorosis in Guizhou and to provide a scientific basis for exploring the follow-up management measures.Methods In 2006 - 2009,three counties of Puding,Bijie and Liuzhi with improved stoves in 2005 and implemented follow-up management measures for subsequent three years were chosen,3 towns were chosen randomly in each chosen county,2 villages were selected randomly in each chosen town,10 households were investigated randomly in each chosen village,and 20 students were investigated of the knowledge of fluorosis control.The investigation included also the usage of the stoves,dehydration methods of grain and related conditions.Results ①The head of the family and student awareness of fluorosis control were 82.6%(743/900)and 91.7% (1650/1800),respectively,and 35.0% ( 385/1100 ) and 61.0% (6605/10 835 ),respectively,before the test,and the difference was statistically significant( x2 =33.04,1189.12,all P < 0.01 ).②The rates of chimney out of the house were 88.5%(69/78) and 100.0%(102/102),respectively,compared with those before the trial[74.4%(2125/2856) and 2.1%(104/4984),respectively],the difference was statistically significant(x2 =720.56,4295.38,all P < 0.01).The iron stove and the table stove's airtight utilization rates were 85.9%(67/78) and 100.0%(102/102),respectively.③The corn and the hot pepper's correct drying rates were 100.0%(180/180).Compared with those[27.2%(49/180) and 32.2%(58/180),respectively]before the trial,the difference was statistically significant(x2 =26.68,37.38,all P < 0.01 ).The corn and the hot pepper's washing rates before eating were 95.0%(57/60) and 98.3%(177/180),respectively.Compared with those[85.0%(153/180) and 77.8%(140/180)]before the trial,the difference was statistically significant(x2 =135.00,490.82,all P < 0.01 ).Conclusions The target population's awareness and knowledge of fluorosis prevention and related behavior are significantly elevated and enhanced after implementation of the three years post-management,which has reached the desired goal.The strategies of the follow-up management suits Guizhou province and widespread application is suggested. Key words: Fluoride poisoning; Air pollution; Organization and management
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