1. Volume 110, Issue 3, Pages 648-653 (September 1996)
Sleep Quality and Nocturnal Respiratory Function With Once-Daily Theophylline (Uniphyl) and Inhaled Salbutamol in Patients With COPD 
Godfrey C.W. Man, MB, BS, FCCP, Kenneth R. Chapman, MD, FCCP, S. Habib Ali, PhD, Andrew C. Darke, PhD 
CHEST 
Volume 110, Issue 3, Pages (September 1996)
DOI: /chest
Copyright © 1996 The American College of Chest Physicians Terms and Conditions

2. Figure 1
Mean percent of total TIB spent in stages 1 to 4, REM, and awake stage (W) for salbutamol (S) and theophylline (T) treatments. Sleep efficiency (Eff, percent of TST over total TIB). There were no significant differences between treatments in any of these sleep parameters.
CHEST  , DOI: ( /chest )
Copyright © 1996 The American College of Chest Physicians Terms and Conditions