Question 6: A long-term study began in 1989. All 3000 children born during that year in Hill city were enrolled in the study, and followed up every year, via a questionnaire to their parents. The questionnaire asked about new illnesses that had developed over the past year. In 1999, a study was done investigating children who had developed a chronic cough in that year. Parents of 95 children who developed a cough were sent a questionnaire to complete, as were the parents of a further 95 children, randomly chosen from those who did not report developing a cough. The questionnaire asked about a range of exposures that had occurred in the past year and the results were compared. One area of interest was wood burning heaters in the household. Of the children with cough, 60 were from houses with wood heaters Of the 95 children without cough, 44 belonged to houses with wood heaters. a. Construct 2 by 2 table to represent these results. b. Calculate an index to describe the association between wood heaters and chronic cough. c. Interpret the result of this calculation
Posted on: Wed, 15 Oct 2014 12:03:40 +0000