Asthma is one of the most common chronic diseases of children, causing a huge burden on family and society It"s prevalence has risen sharply over the past 30 years in many parts of the world with large geographical variations. However, in Iraq there is no national database which could be obtained. Due to the increasing number of cases and the burden of this health problem we investigated the sociodemographic and other risk factors related to asthma among primary school children. Modified ISAAC questionnaires were completed by the parents of 2262 children randomly chosen. We found males having higher rat of asthma Bing male be more at risk of developing asthma steadily increasing (27.4%), (28.3%)and (39.5%) with increased (CR) crowding rate (<3, 5 -5,and >5) respectively. only CR of >5 acts as a significant risk factor for asthma. Urbanization acts as significant risk for developing asthma EnvironmentBehaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia. https://doi.org/10.21834/aje-bs.v2i4.212 Al -Kubaisy, W.,et.al., / Asian Journal of Environmen-Behaviour Studies, ajE-Bs, 2(4) Jul /Sep 2017 (p.75-84) This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-ncnd/4.0/). Peer-review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for 76 IntroductionChildhood asthma is a major clinical concern worldwide. It causes a huge burden on family and society. It accounts for a large number of lost school days and may deprive the child of both academic achievement and social interaction. Childhood asthma also places strain on healthcare resources as a result of doctor and hospital visits and cost of treatment (Von, 2000). The prevalence of childhood asthma is increasing worldwide, consequently morbidity and mortality and cost of care continue to increase (Partridge& Alwan, 1997;Ece et al, 2001 andRorstad &Bhatt, 2000.)It has been documented that the prevalence of pediatric asthma has risen sharply over the past 30 years in many parts of the world with large geographical variations (Wood, 2002;Yuan, Basso Sorensen & Oslen, 2002;Douwes &Pearce. 2002). The reasons for this dramatic increase are not yet clear and likely to include multiple contributing factors (Wood, 2002; Anonymous-1-, n.d). These variations are possible due to different exposure to respiratory infections, indoor and /or outdoor pollution, and diet (Von, 2000; Partridge&Alwan,1997). Genetics, lifestyle and environmental factors also may play a role in these variations (Ece. et al, 2001).The prevalence of asthma seems to be higher in affluent than non -affluent populations (Partridge& Alwan, 1997; AlDagwood, 2001).No one really knows why more and more children are developing asthma. Some experts suggest that children are being exposed to more and more allergens such as dust, air pollution, and passive smokers. These are factors that trigg...

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