Applying UK real-world primary care data to predict asthma attacks in 3776 well-characterised children: a retrospective cohort study.

Factors other than a past history of attacks which were associated with increased risk for future asthma attacks included blood eosinophilia, reduced PEF, lower respiratory tract infection and younger age, and although these associations were highly significant, they were weakly related to risk for asthma attacks and therefore not likely to be particuarly helpful in risk analysis.

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