Table 3 Bivariate and multivariable linear regressions with ICS MPR as outcome variable and Foster score, age, FEV₁, sex, GINA 2020 treatment steps, exacerbation history and excessive SABA use as exposure variables

Foster Score

(0.18–0.54)

0.32

(0.13–0.50)

< 0.001

Age

0.00

(0.00–0.00)

0.2

FEV₁

0.05

(-0.01–0.11)

0.079

Female

0.12

(0.02–0.22)

0.019

GINA 2020 Step

 Step 2

–

–

–

 Step 3

0.02

(-0.11–0.16)

0.8

 Step 4

0.10

(-0.04–0.24)

0.2

 Step 5

0.08

(-0.08–0.24)

0.3

History of Moderate Exacerbations^#

0.00

(-0.09–0.10)

> 0.9

History of Severe Exacerbations^##

-0.12

(-0.24–-0.01)

0.039

Excessive SABA use (above 600 doses/yr)

0.06

(-0.04–0.16)

0.3