Source of chemical poisoning Number of cases 2007 2008 2009 2010 2011 Total Cleaning agents 0 2 6 6 2 16 Construction materials 1 0 1 0 2 4 Pesticides and fertilizers 2 1 0 0 4 7 Fuel (kerosene/petrol/diesel) 1 5 5 2 0 13 Others 0 0 0 0 1 1 Total 4 8 12 8 9 41 Probability 0.04 0.08 0.11 0.08 0.09 0.40

Table 4: The probability of chemical poisoning cases among children according to the year in comparison to the total number of children poisoning cases admitted to HUSM from 2007 to 2011. P of CP cases among children in year .