Yahya Mubashar, Waqar Hussain, Sajid Maqbool.
Distribution of risk factors in children with Bronchial Hyper-Reactivity.
Pak Paed J Jan ;24(2):61-4.

Out of a total of 2006 school children screened for bronchial hyper-reactivity 91 (4.5%) were found positive. Of these 26 (29%) were lost to follow-up. The remaining 75 (71%) were evaluated for the presence of risk factors. They included 34 (52.3%) males and 31 (47.7%) females. Risk factors were found in 50 (76.9%) children while 15 (23.1%) had no association with risk factors. More males (54%) were found to have risk factors. In each child, two or more risk factors were present. Thirty-one (47.7%) children had family history of asthma/allergy. Exposure to passive smoking was present in 27 (41.5%), exposure to pets in 15 (23%), allergy to food to 13 (20%), exposure to cold weather in 10 (15.4%), exposure to dust in 8 (12.3%), exposure to pollens in 3 (4.6%) and sensitivity to home environment in 3 (4.6%). With a significant family history, the commonest triggers are exposure to smoking, pets, allergy to food and cold weather. These may be kept in mind when investigating children with asthma and appropriate measures instituted

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