3.1. Participants
The baseline characteristics of the asthma and control cohorts are
summarized in Table 1. The mean age of patients in the asthma cohort was
49 years, and 64.1% were female. There were no significant differences
regarding age and sex. Regarding the type of insurance, patients in the
asthma cohort were more likely to receive medical aid compared with
subjects in the control cohort. Detailed information regarding
comorbidity profiles are summarized in Supplemental Table 1 .