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

Table 2

Boundary values of avL for classification of compressed ECG signals (leads I and V1) into 3 quality groups (a: perfect quality, b: good quality, and c: not evaluable ECG). The values come from two experts (1 and 2). The overall avL boundaries can be set as strict-max case, mild-min case, and medium-median case.

	lead V1: bound a/b		lead V1: bound b/c		lead I: bound a/b		lead I: bound b/c
	expert 1	expert 2	expert 1	expert 2	expert 1	expert 2	expert 1	expert 2
min avL	0.20	0.20	0.10	0.10	0.15	0.20	0.10	0.10
max avL	0.70	0.80	0.20	0.25	0.65	0.65	0.20	0.20
median avL	0.40	0.35	0.10	0.15	0.30	0.30	0.10	0.15