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. 2012 Dec 11;7:811–818. doi: 10.2147/COPD.S36151

Table 4.

Severe Respiratory Insufficiency questionnaire following 6 weeks of high-pressure and high-intensity noninvasive ventilation

High pressure
NIV (PSV)
High intensity
NIV (PCV)
Mean difference (95% CI) P value
Respiratory 69 ± 16 57 ± 11 12 (3 to 21) 0.017
Physical 57 ± 27 60 ± 29 −3 (−19 to 13) 0.668
Attendant symptoms and sleep 56 ± 10 51 ± 11 5 (−1 to 11) 0.070
Social relationships 70 ± 14 76 ± 12 −6 (−19 to 7) 0.297
Anxiety 74 ± 22 78 ± 23 −4 (−18 to 10) 0.557
Psychological well-being 72 ± 18 70 ± 24 2 (−11 to 16) 0.679
Social functioning 72 ± 22 70 ± 24 2 (−2 to 7) 0.283
Summary scale 67 ± 12 66 ± 16 1 (−4 to 7) 0.571

Abbreviations: CI, confidence interval; PSV, pressure support ventilation; PCV, pressure controlled ventilation; NIV, noninvasive ventilation.