Review Article

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

Table 5

Recommendations for compression. All the methods suitable for assessment of signal quality after compression are listed. These methods are separated into four groups according to the cluster analysis. Each group is separated by a horizontal line. The recommendations are determined in three ranges (min, max, and median case) according to Table 2. Using this table, the signals after compression can be divided into three groups of quality and the user does not have to know or set avL. The last column of this table informs us about the computational demand of the methods (1: low, 2: medium, 3: high). On the basis of five criteria, we recommend a total of eight methods for signal quality evaluation, which are highlighted in bold. The methods are diversified, which means that they come from all four clusters (which represent four different trends) and are based on various principles. The other methods from the table can be used as well since they are valid, while they are not the best.

ā€‰the min casethe max casethe median casecomputational demand
avL = 0.15avL = 0.1avL = 0.8avL = 0.25avL = 0.4avL = 0.15

CC20.94710.90780.98510.97280.98160.94711
angle0.00040.00040.00050.00050.00050.00041
CorrCoef of HRT0.96740.88720.99750.98610.99630.96742
PSim NN95.065589.984098.424597.178498.170595.06552
PSim SDNN72.280249.011295.355284.494791.848372.28022
PSim LF/HF80.777272.393096.998088.636593.944980.77722
PSim HF power84.098578.163496.964089.953594.096384.09852

QS4.77435.37155.53654.76225.17954.77431

SNR111.59439.080426.638615.996120.656411.59431
PSNR23.094120.573638.144827.498932.159223.09411

MSE9102.275616253.6943182.72833374.57361037.38869102.27561
NMSE0.09150.16770.00440.03410.01270.09151
RMS175.2972103.027211.693444.289724.826375.29721
PRDN128.319638.59535.436017.016710.087428.31961
MAX664.1331858.554167.4966390.0220195.4502664.13311
NMAX28.466737.29163.639916.60388.816128.46671
STDERR75.3047103.037511.694644.294124.828875.30471
PAD0.00110.00120.00020.00080.00050.00111
kappa0.26740.48270.01020.09870.03480.26741
WWPRD41.621751.237012.607529.176820.128741.62172
WEDD28.548038.14963.811317.00789.260928.54802
MSEWPRD WSNA36.644443.426813.591827.353220.179136.64442
MSEWPRD RMWSE11.738415.85461.56546.96803.819411.73842
MSEWPRD RWSE16.030321.22012.70069.82455.708116.03032
PE42.295851.210414.996030.951322.536742.29582
WWPRD SWT27.684737.90264.031116.33679.021227.68472
WEDD SWT23.348232.73452.617013.16786.762823.34822
MSEWPRD WSNA SWT19.421225.47704.023012.31977.562719.42122
MSEWPRD RMWSE SWT12.083416.63591.55556.99193.752812.08342
MSEWPRD RWSE SWT12.083416.63591.55556.99193.752812.08342
PE SWT28.640538.39574.817617.542310.133928.64052
WDD12.769415.73283.83039.12756.354112.76943