1. Handedness and Sleep Apnea
Victor Hoffstein, M.D., Charles K. Chan, M.D., F.C.C.P., Arthur S. Slutsky, M.D., F.C.C.P. 
CHEST 
Volume 103, Issue 6, Pages (June 1993)
DOI: /chest
Copyright © 1993 The American College of Chest Physicians Terms and Conditions

2. Figure 1.
Percentage of clinic patients who are right-handed, plotted as a function of age, compared to the findings in the sample of 5, 147 subjects in the study by Porac and Coren.12
CHEST  , DOI: ( /chest )
Copyright © 1993 The American College of Chest Physicians Terms and Conditions

3. Figure 2.
Distribution of right- and left-handed patients with sleep apnea among RDI quartiles. Note progressive increase in the percentage of left-handed patients with increasing RDI.
CHEST  , DOI: ( /chest )
Copyright © 1993 The American College of Chest Physicians Terms and Conditions