in a study of sleep-disordered breathing among 139 elderly individuals , sleep apnea ( defined as 5 or more apneas per hour ) occurred in 34 ( 41.7 % ) alzheimer 's subjects compared with 56 ( 5.4 % ) healthy controls , 35 ( 11.4 % ) depressive subjects , and 24 ( 16.7 % ) patients with mixed symptoms of both cognitive impairment and depression ( p less than .001 ) .
C0037315
sleep
C0003578
apneas