Table 6

Correlation between mean oxygen saturation during rapid eye movement (REM) sleep and forced expiratory volume in one second (FEV₁)

	Pearson correlation coefficient	p-value
Pre-sleep FEV₁
Baseline visit	0.29	0.045
End-of-treatment visit	0.42	0.003
Post-sleep FEV₁
Baseline visit	0.28	0.064
End-of-treatment visit	0.36	0.013

Data are from patient population with total sleep time of at least 2 h who also had REM sleep (n=47)