TABLE 4. Descriptive Statistics (Mean and Standard Deviation) of All HRCA Features for MIC, AP, SS, and ML Axes for Both Barium and Water Swallows.

Extracted Features	MIC		AP		SI		ML
Time Domain	Barium	Water	Barium	Water	Barium	Water	Barium	Water
Standard Deviation	0.011 ± 0.014	0.012 ± 0.010	0.010 ± 0.016	0.011 ± 0.015	0.022 ± 0.028	0.024 ± 0.025	0.010 ± 0.011	0.012 ± 0.012
Skewness							0.301 ± 0.831	0.315 ± 0.648
Kurtosis	18.646 ± 17.230	28.804 ± 21.839	13.989 ± 36.581	6.024 ± 13.319	8.274 ± 8.543	8.046 ± 7.883	10.332 ± 16.147	7.936 ± 9.468
Information-Theoretic Domain
Lempel-Ziv Complexity	0.251 ± 0.057	0.199 ± 0.055	0.224 ± 0.214	0.213 ± 0.199	0.152 ± 0.053	0.145 ± 0.059	0.114 ± 0.031	0.107 ± 0.026
Normalized Entropy Rate	0.909 ± 0.038	0.936 ± 0.022	0.862 ± 0.199	0.891 ± 0.148	0.956 ± 0.010	0.964 ± 0.011	0.961 ± 0.009	0.966 ± 0.009
Frequency Domain
Peak Frequency (Hz)	9.541 ± 10.085	7.345 ± 8.221	12.741 ± 28.258	0.966 ± 0.409	4.875 ± 4.398	5.118 ± 4.923	2.206 ± 2.671	1.885 ± 1.059
Spectral Centroid (Hz)	63.399 ± 28.587	62.152 ± 28.025	45.395 ± 61.979	25.257 ± 31.512	15.701 ± 18.241	12.667 ± 11.05	35.708 ± 78.885	24.891 ± 39.199
Bandwidth (Hz)	87.298 ± 35.314	86.102 ± 35.349	78.578 ± 69.379	57.405 ± 51.251	33.635 ± 30.592	23.339 ± 15.294	78.019 ± 113.267	57.977 ± 80.418
Time-Frequency Domain
Wavelet Entropy	1.300 ± 0.478	1.720 ± 0.488	0.211 ± 0.153	0.238 ± 0.16	0.509 ± 0.410	0.842 ± 0.59	0.420 ± 0.459	0.610 ± 0.567