What question did this study set out to answer?

To explore the relationship between bronchoprovocation test positivity and the development of allergic respiratory diseases over a 7-year period.

Does presence of bronchoprovocation test positivity effect the development of allergic respiratory disease: 7 year follow-up study

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Long-term follow-up reveals bronchoprovocation test positivity predicts allergic respiratory diseases in chronic urticaria.

To explore the relationship between bronchoprovocation test positivity and the development of allergic respiratory diseases over a 7-year period.
Included chronic urticaria patients with disease duration over one year.
Excluded patients with asthma or abnormal pulmonary function tests.
Conducted methacholine provocation tests and pulmonary function tests on participants.
Collected demographic data and total IgE levels.
26.3% of patients tested positive for the methacholine provocation test.
Asthma and allergic rhinitis were more prevalent in MPT(+) patients at 46.3% and 60.9%, respectively.
No significant demographic differences between MPT(+) and MPT(-) patients.

Havlucu et al. (2011) studied this question.

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