Table 7 Predictors of severe acute exacerbation among enrolled patients

Age (>40 years)

2.11

1.89–3.45

<0.001*

Previous MV

1.20

1.10–3.01

<0.001*

OSA

1.11

1.01–2.35

<0.001*

Overuse of SABA

2.01

1.87–4.02

<0.001*

Uncontrolled asthma

3.33

2.50–5.05

<0.001*

Depression (moderate and severe)

2.30

1.78–4.35

<0.001*

Eosinophilia (> 300 cells/μl)

1.45

1.20–2.59

<0.001*

SO₂ <90%

4.56

3.45–7.56

<0.001*

PEFR (after1-h treatment)

3.34

1.90–4.9

<0.001*