Table 3 Study of univariate and multivariate association of change in CAT score from exacerbation to stable state, categorized into three categories (5–6 points, 7–12 points, and over 12)

Type of exacerbation (inpatient vs. outpatient RC)

2.3

1.6 to 3.2

<0.001

Gender (men vs. women RC)

2.3

1.6 to 3.3

0.051

Waist circumference

0.994

0.992 to 0.996

<0.001

Smoking status (current vs. former smoker RC)

1.64

1.17 to 2.32

0.004

Exacerbations previous year

0.89

0.85 to 0.93

<0.001

FEV1 (%)

0.99

0.98 to 0.99

<0.001

CAT at inclusion

0.96

0.95 to 0.97

<0.001

0.84

0.81 to 0.86

<0.001

CCQ at inclusion

0.84

0.80 to 0.87

<0.001