TABLE 1

Confirmation of severe asthma in the analysed population

Confirmed severe asthmaNot confirmed severe asthmaMissing dataTotal
Subjects137778101465
GINA step
 Step 101 (1)1 (0)
 Step 2000
 Step 324 (2)8 (10)32 (2)
 Step 4565 (41)41 (53)606 (41)
 Step 5788 (57)28 (36)816 (56)
 Unknown1010 (1)
Patient follow-up <6 months073 (94)73 (5)

Data are presented as n or n (%). GINA: Global Initiative for Asthma.