Results

Baseline characteristics of asthma versus non-asthma subjects in the sample

Of the 3,101 subjects who participated in the WSAS clinical investigations prior to COVID-19, 1,206 had never had asthma, while the remaining 1,895 who had ever had asthma were included in the phenotype derivation. General characteristics of subjects with asthma and without asthma, respectively, can be seen in Table 1. Those who had ever had asthma were younger, had a higher proportion of women, were more obese, had poorer lung function, more inflammation, and more respiratory symptoms, and were less atopic, had a higher proportion of family history of asthma/allergy, less rhinitis, and more COPD than those who had never had asthma.