Table 2.

Numbers of the images for testing each fold.

Testing fold	Training		Balanced training		Test
	Non-AF	AF	Non-AF	AF	Non-AF	AF
1	415,109	294,136	294,136	294,136	123,083	90,403
2	422,935	302,194	302,194	302,194	115,257	82,345
3	424,919	300,509	300,509	300,509	113,273	84,030
4	441,739	314,916	314,916	314,916	96,453	69,623
5	448,066	326,401	326,401	326,401	90,126	58,138