When we compared such findings to the group whose parameters had not changed , we noted that the first set of patients were sleepier ( ESE : 9 + / - 4 vs 5 + / - 5 , P = 0.04 , respectively ) , and showed more microarousals with PM SR off ( 20 + / - 14 vs 7 + / - 5 microarousal/hour , P = 0.007 ) .
