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

Table 2.

Sleep actigraphy 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
Actual sleep time (min) 345 ± 91 329 ± 120 16 (−49 to 82) 0.571
Actual wake time (min) 69 ± 35 83 ± 43 −14 (−40 to 11) 0.225
Sleep efficiency (%) 77 ± 12 73 ± 18 4 (−8 to 16) 0.484
Sleep latency (min) 20 ± 16 21 ± 16 −1 (−18 to 15) 0.835

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