PE (n=59)

Pneumonia (n=31)

Asthma attack (n=27)

p value

Female/Male

40/19

14/17

21/6

0.24

Age (years)

57.17 ± 17.34

52.65 ± 21.59

53.15 ± 14.67

0.44

Symptom duration (days)

5.03 ± 5.84

6.0 ± 4.65

11.63 ± 11.50

0.001

Smoking (pack-year)

30.12 ± 18.19

35.23 ± 26.07

22 ± 12.74

0.30

Table 1: General properties of patients and control groups.