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. Author manuscript; available in PMC: 2007 Jun 20.
Published in final edited form as: J Clin Sleep Med. 2006 Jan 15;2(1):57–62.

Table 3. General linear model for estimating the change in PaCO2.

Parameter Value Coefficient 95% CI P value Explained variance (95% CI)
Adherence Hrs of average daily PAP use −1.84 (−2.83, −0.98) graphic file with name nihms22039t1.jpg 34% (19-53%)
Adherence squared Hrs2 of average daily PAP use 0.11 0.03
FEV1% of predicted Percent (0 to 100) −0.08 (−0.15, −0.03) 0.004 13% (2-29%)

All coefficients are adjusted for baseline PaCO2 in addition to the other variables in the model listed above. Model R2 = 0.70 (95% CI 0.55-0.82). All 95% CI’s were constructed by bootstrap.

CI = confidence interval, PAP= Positive airway pressure.