Female sex was significantly associated with physician-diagnosed asthma; OR 1.17 (1.05-1.32), as was ex-smoking; OR 1.34 (1.16-1.55) while current smoking was borderline significant.
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West Sweden Asthma Study: prevalence trends over the last 18 years argues no recent increase in asthma.
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The sentences
In agreement with previous studies, female sex and ex-smoking was closely associated with asthma, while current smoking was only associated with asthma with borderline significance [ 24 , 26 , 33 ].