Table 1 Comparison of demographic variables between success and failure group

Sex

 Male

41

(82.0)

9

(18.0)

0.646

 Female

36

(78.3)

10

(21.7)

Smoking status

 Smoker

29

(82.9)

6

(17.1)

0.622

 Nonsmoker

48

(78.7)

13

(21.3)

Respiratory failure

 Type 1

15

(75.0)

5

(25.0)

0.511

 Type 2

62

(81.6)

14

(18.4)

Pulmonary hypertension

26

(72.2)

10

(27.8)

0.128

Diabetes mellitus

48

(77.4)

14

(22.6)

0.354

Systemic hypertension

49

(77.8)

14

(22.2)

0.409

Coronary artery disease

25

(71.4)

10

(28.6)

0.102

Home NIV use

15

(83.3)

3

(16.7)

0.712

Home oxygen use

18

(78.3)

5

(21.7)

0.788

Past history of NIV failure

3

(33.3)

6

(66.7)

p < 0.01