Table 2 Demographic and ventilation characteristics in the PH versus SLC groups

Subjects, N

13

28

18

46

 Female

5

(38.5)

9

(32.1)

8

(44.4)

17

(37.0)

.718

>.999

 Male

8

(61.5)

18

(64.3)

10

(55.6)

28

(60.9)

 Divers

0

0

1

(3.6)

0

0

1

(2.2)

Age, years, M (±SD)

52.17

(±16.75)

46.86

(±15.40)

65.07

(±11.78)

53.99

(±16.60)

<.001*

<.001*

Underlying disease, n (%)

<.001*

.002*

 NMD

7

(53.8)

17

(60.7)

5

(27.8)

22

(47.8)

 Spinal cord paralysis

0

0

4

(14.3)

0

0

4

(8.7)

 Central nervous system disease ^b

2

(15.4)

0

0

8

(44.4)

8

(17.4)

 COPD

2

(15.4)

4

(14.3)

2

(11.1)

6

(13.0)

 Pneumonia

1

(7.7)

1

(3.6)

1

(5.6)

2

(4.3)

 Chest deformity

1

(7.7)

1

(3.6)

1

(5.6)

2

(4.3)

 Post-operative complications

0

0

1

(3.6)

1

(5.6)

2

(4.3)

Type of ventilation, n (%)

.069

.207

 Invasive

10

(76.9)

20

(71.4)

17

(94.4)

37

(80.4)

 NIV

3

(23.1)

8

(28.6)

1

(5.6)

9

(19.6)

Duration of ventilation, years, M (±SD)

9.26

(±5.86)

11.67

(±8.00)

3.08

(±2.44)

8.67

(±7.76)

<.001*

<.001*

Spontaneous breathing, n (%)

.768

>.999

 Ventilation < 16 h

6

(46.2)

10

(35.7)

7

(38.9)

17

(37.0)

 Ventilation > 16 h

1

(7.7)

3

(10.7)

3

(16.7)

6

(13.0)

 Continuous ventilation

6

(46.2)

15

(53.6)

8

(44.4)

23

(50.0)