Table 1.

Comparisons of VFSS and AKAP parameter between ALS patients and control subjects.

VFSS variables	ALS patients (n = 30)		Control (n = 30)		P value
VDS	29.08 (±21.52)		0 (±0)		<0.001
PAS (fluid)	2.63 (±2.03)		1 (±0)		<0.001*
PAS (Yogurt)	1.57 (±1.46)		1 (±0)		0.048*
AKAP parameters	Fluid	Yogurt	Fluid	Yogurt	Fluid	Yogurt
Vertical AB (cm)	1.22 (0.67)	1.63 (1.13)	1.15 (0.66)	1.17 (0.70)	0.709	0.062
Verical AC	0.64 (0.98)	1.13 (1.13)	0.83 (0.76)	0.89 (0.89)	0.384	0.36
Vertical BD	1.70 (0.73)	1.87 (1.26)	1.37 (0.43)	1.43 (0.70)	0.038	0.098
Vertical AD	−0.48 (0.8)	−0.24 (0.86)	−0.21 (0.70)	−0.34 (0.92)	0.174	0.644
Horizontal AB	0.79 (0.69)	0.70 (0.61)	0.72 (0.51)	0.89 (0.59)	0.627	0.217
Horizontal AC	1.37 (0.73)	1.36 (0.68)	1.21 (0.42)	1.37 (0.50)	0.313	0.946
Horizontal AD	0.69 (0.67)	0.52 (0.66)	0.50 (0.57)	0.43 (0.53)	0.242	0.548
Time AB (sec)	0.64 (0.53)	0.66 (0.34)	0.52 (0.22)	0.54 (0.24)	0.167	0.119
Time ABC	0.94 (0.46)	0.95 (0.40)	0.71 (0.20)	0.70 (0.14)	0.019	0.002
Time ABCD	1.62 (0.59)	1.60 (0.71)	1.18 (0.33)	1.17 (0.28)	0.001	0.004
Duration C (sec)	0.36 (0.17)	0.27 (0.13)	0.25 (0.09)	0.21 (0.07)	0.004	0.025

Values represent means ± SD; Analysis of t-test, equal variances assumed (Same results in equal variances not assumed).

*χ² test.

AKAP: Automated Kinematic Analysis Program, VDS: Videofluoroscopic Dysphagia Scale, PAS: Penetration-Aspiration Scale.