الفهرس 
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Abstract
Pesticides are used widely to control weeds and insect infestation in agricultural fields and various pests and disease carriers (e.g., mosquitoes, ticks, rats, and mice) in houses, offices, malls, and streets.
The aim of the present study was to identify the different forms of used indoor pesticide and to assess the pattern of exposure to organophosphorus. Also to asses possible effects of indoor pesticide exposure on neurobehavioral of school age children.
The study was a cross sectional study carried out in Munshaat Sultan village, Menouf district, Menoufia Governorate during the period from the 1st of July 2016 till the end of September 2018.
The target populations were basic school children aged (9-13) years old in Munshaat Sultan primary and preparatory schools (1 primary, 1 preparatory) and Mothers of the selected children (for collecting socio demographic data and data about indoor pesticide use).
The calculated sample was 240 children and increased to 270 children to avoid the dropout. The sample was proportionally allocated according to the total number of children in each school (150 Children from primary school and 120 children from preparatory school). A class from each grade was selected; each class includes 50 60) children.
The total number of children and mothers who’s fill the inclusion criteria and their mother accepted to participate in the study were 260
The study was approved by the Research Ethics Committee Menoufia University, and written informed consent was signed by one of the parents Procedure of the study: the studied participants were subjected to:
a. History taking, including personal data such as age, sex, and socioeconomic standard according to Fahmy et al et al., 2015 Children records were revised by a social worker to complete the socio-demographic data. Data about the presence of indoor insects, rats, the use of pesticide, pattern of applying and number of bottles used per month was taken.
b. Clinical examination to fulfill the inclusion and exclusion criteria and as baseline evaluation.
c. The neurobehavioral assessment was performed by using Five neurobehavioral test batteries measuring cognitive domain. The tests were Similarities Test, Digit Span Test, Digit Symbol Test , Trail Making and Paired Auditory Serial Addition .Better performance is evaluated by higher scores obtained on tests of Similarities Test, Digit Span Test, Digit Symbol Test and Paired Auditory Serial Addition Test by contrast lower latencies or time to complete Trail Making Test part A.
The study revealed the following results:
Among 260 participated child aged from 9-13 years, the prevalence of indoor pesticide use was 88.9%. .
Most of the studied participants with indoor pesticide use reported that they did not reuse the empty bottles of pesticide (85%), close windows during pesticide use (71.2%) and store the pesticide bottles at specific place (69.6%).
There was statistically significant relationship between indoor pesticide use, Mother’s work and education (p value < 0.05), as about two third of the participants with indoor pesticides use had non-working (62%) and secondary educated mothers’ (57%).
Regarding the different forms of indoor pesticide used the results showed that 70.1% in the form of spray, 34.2% was in form of powder, 11.3% was in form of dough and 6.9% was in form of liquid The studied participants with indoor pesticide use exhibited highly statistically significantly lower performance in Similarity test, Digital symbols, Digital span, Trail making (sec), PASAT (p value <0.001).
This study revealed that that there was no statistically significant difference between male and female regarding neurobehavioral tests (Digital span, Similarity test, Digital symbols, Trail making (sec) and PASAT)
There was positive significant correlation between the number of pesticides’ bottles used and neurobehavioral test (Trail making)( p value<0.001 )while this correlation was negative in Digital span, , Similarity test, PASAT(p value<0.001) and Digital symbols (p value<0.05) .