Additional file 2.

Percentage distribution of values of each factor in children aged 6 or older at hospital admission for asthma, with chi-square tests of association. Percentage distribution of values of each factor in children aged 6 or older at hospital admission for asthma.

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Davidson et al. BMC Pulmonary Medicine 2010 10:14   doi:10.1186/1471-2466-10-14