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. Author manuscript; available in PMC: 2019 Nov 1.
Published in final edited form as: Int J Speech Lang Pathol. 2018 Sep 25;20(6):610–623. doi: 10.1080/17549507.2018.1485739

Table 1.

Mean, standard deviation, and comparative statistics for all AMR variables, speaking rate, and speech intelligibility (Refer to note for Table S1 for definitions of terms).

Variables Control Early ALS Late ALS ANOVA Post-hoc pairwise comparisons

Mean SD Mean SD Mean SD F p Control vs. Early ALS Control vs. Late ALS Early ALS vs. Late ALS
Slp1 0.01 0.15 0 0.2 -0.07 0.19 0.58 0.56
Slp2 -0.03 0.07 -0.05 0.09 -0.01 0.09 2.4 0.09
Slp_d 0.03 0.14 0.05 0.21 -0.06 0.17 0.16 0.86
Sse1 1 0.35 1.17 0.32 0.99 0.31 1.88 0.16
Sse2 0.58 0.15 0.58 0.19 0.48 0.17 8.66 < 0.001 n.s. 0.03 < 0.001
Sse 0.83 0.24 0.93 0.24 0.79 0.22 3.59 0.03 n.s. n.s. 0.03
Scanning_d1 0.98 0.4 1.17 0.4 0.97 0.34 1.09 0.34
Scanning_d2 0.54 0.16 0.53 0.19 0.5 0.14 4.07 0.02 n.s. n.s. 0.02
Scanning_d 0.76 0.26 0.85 0.25 0.74 0.21 2.13 0.12
D_max_close 10.13 3.13 13.21 3.8 15.89 3.19 3.97 0.02 0.03 0.03 n.s.
D_max_open 10.15 3.11 13.25 3.8 15.87 3.14 3.66 0.03 0.03 0.03 n.s.
D_mean 6.76 2.34 9 2.89 11.69 3.02 3.79 0.03 0.04 0.02 n.s.
Freq 5.8 0.92 4.5 1.07 2.39 0.41 47.9 < 0.001 0.001 < 0.001 < 0.001
Dur 18.66 5.61 14.3 5.82 13.27 4.24 8.04 < 0.001 0.03 < 0.001 0.03
Jitter 0.18 0.02 0.24 0.05 0.44 0.07 101.13 < 0.001 < 0.001 < 0.001 < 0.001
Tsd 0.03 0.02 0.03 0.02 0.04 0.03 2.34 0.10
Tsd_cv 0.15 0.12 0.15 0.13 0.1 0.1 1.08 0.34
Max_vel 165.63 39.34 167.77 45.09 141.43 26.35 4.1 0.02 n.s. n.s. 0.02
STI 10.08 2.77 8.13 2.37 6.71 2.38 2.52 0.08
D_dtw 1.52 1.11 2.6 1.88 2.71 1.66 2.09 0.13
Ncyc 98.71 27.4 58.95 30.65 27.71 9.07 27.24 < 0.001 < 0.001 < 0.001 < 0.001
Speaking rate 174.78 26.63 166.05 42.85 106.73 44.85 17.55 < 0.001 n.s. < 0.001 < 0.001
Intelligibility 99.57 1.06 97.74 3.35 66.89 31.55 35.67 < 0.001 n.s. < 0.001 < 0.001