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. 2011 Apr 1;34(4):479–485. doi: 10.1093/sleep/34.4.479

Table 4.

Oxygenation data week 1 and month 3 (mITT group)

P Value
Device-off Device-on Median of % change Device-off Device-on Median of % change EPAP vs Sham (% change)
EPAP Week 1 (N = 92)
Sham Week 1 (N = 81)
ODI 13.7 (7.8, 23.6) 7.3* (3.5, 13.8) −43.2 (−66.1, −2.2) 14.6 (8.7, 22.3) 12.2 (6.5, 21.9) −15.5 (−40.9, 19.7) < 0.001
%TST SpO2 < 90% 1.5 (0.2, 5.1) 0.6** (0.0, 1.7) −65.6 (−95.1, 0.0) 2.2 (0.2, 6.2) 1.0 (0.2, 4.7) −40.0 (−74.2, 64.9) 0.004
EPAP Month 3 (N = 77)
Sham Month 3 (N = 67)
ODI 12.6 (7.1, 23.8) 8.6* (3.7, 13.5) −35.2 (−64.1, 2.8) 13.3 (7.5, 23.1) 12.7 (6.4, 21.2) −16.0 (−39.8, 29.6) 0.025
%TST SpO2 < 90% 1.3 (0.2, 5.0) 0.7** (0.0, 3.5) −64.1 (−91.7, −26.5) 1.8 (0.3, 5.1) 1.8 (0.1, 6.2) 0.0 (−60.0, 66.0) 0.002

EPAP Device-on vs Device-off

*

P < 0.001,

**

P = 0.004.

Values are medians (25, 75 quartiles).

TST, total sleep time; ODI, oxygen desaturation index; SpO2, arterial oxygen saturation.