n=45	AHI before cardioversion	AHI after cardioversion	AI before cardioversion	AI after cardioversion
Mean	22.21	15.79	8.42	6.04
Standard deviation	10.67	9.77	7.01	7.97
Decrease in %	-	28.89	-	28.22
P value	-	< 0.05	-	< 0.05