A Comparative Analysis of Methods for Evaluation of ECG Signal Quality after Compression

Table 4

Signal quality groups separated by values of PRD [3], WWPRD [3], and WEDD [28] with corresponding values of avL determined using the mean of index values for all signals and leads of the CSE database.

quality	PRD	CP		WWPRD	CP		WEDD	CP
group	[%]	[%]	[bps]	[%]	[%]	[bps]	[%]	[%]	[bps]
excellent	0-4.33	100	1.15-9	0-7.4	100	2-9	0-4.517	100	0.7-9
very good	4.33-7.8	60	0.55-1.15	7.4-15.45	96	0.6-2	4.517-6.914	98	0.5-0.7
good	7.8-11.59	36	0.4-0.55	15.45-25.18	93	0.35-0.6	6.914-11.125	93	0.35-0.5
not bad	11.59-22.57	20	0.2-0.4	25.18-37.4	82	0.2-0.35	11.125-13.56	91	0.3-0.35
bad	> 22.57	27	< 0.2	> 37.4	89	< 0.2	> 13.56	93	< 0.3