SaO₂ > 92% (n = 88)

SaO₂ < 92% (n = 12)

Age (years)

22 to 65

33 to 67

Smoking

Non smoker

66%

(52%)

Ex-smoker

19.3%

(41.6%)

Smoker

14.7%

(8.33%)

Duration of Asthma (mean)

13 years

15 years

Presence of associated symptoms of infection like fever

33%

62%

Steroid

30%

55%

Previous ICU admission with intubation

0%

8.3%

Previous ICU admission without intubation

0%

16.6%

Previous hospital admission

13.63%

41.66%

Frequency of visiting ER in the last 6 months

Once in last 6 months

62.50%

100%

Two to three times

21.59%

33.33%

More than three times

11.36%

66.66%

Cardiac rhythm disturbance

2.27% had atrial fibrillation

0%