Article
Cluster Analysis on Longitudinal Data of Patients with Adult-Onset Asthma.
The journal of allergy and clinical immunology. In practice - 1 Jan 2000
Ilmarinen Pinja, Tuomisto Leena E, Niemelä Onni, Tommola Minna, Haanpää Jussi, Kankaanranta Hannu
Abstract excerpt
BACKGROUND: Previous cluster analyses on asthma are based on cross-sectional data. OBJECTIVE: To identify phenotypes of adult-onset asthma by using data from baseline (diagnostic) and 12-year follow-up visits. METHODS: The Seinäjoki Adult Asthma Study is a 12-year follow-up study of patients with new-onset adult asthma. K-means cluster analysis was performed by using variables from baseline and follow-up visits...
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