Table 5.

Results of multiple regression analyses using the improvement in scores (re VTL ratio = 1.0) as the dependent variable and age, average low-frequency hearing loss (0.25–0.5 kHz) and average mid∕high-frequency loss (1–3 kHz) as independent variables. The abbreviations “B” and “β” denote unstandardized and standardized beta coefficients, respectively. The adjusted R² is shown in parentheses. Separate analyses were completed for talker differences in VTL and F0, and low and high target talkers. The one significant predictor variables is indicated by an asterisk.

	B	SE B	β	p-level
VTL1.38 Low target (short VT)
Age	1.28	0.80	0.36	0.31
LF 0.25-0.5	0.31	0.32	0.19	0.11
HF1-3	−1.70	0.66	−0.60	<0.03*
R2 (Adjusted R2)	0.65 (0.54)
VTL1.38 High target (long VT)
Age	0.97	-0.52	−0.18	0.62
LF 0.25-0.5	0.39	0.45	0.15	0.66
HF1-3	0.80	−1.08	−0.39	0.31
R2 (Adjusted R2)	0.12(−0.18)
F0 - 9 semitones Low target
Age	1.29	0.98	0.49	0.16
LF 0.25-0.5	−0.03	0.41	−0.09	0.79
HF1-3	−0.30	0.78	−0.07	0.82
R2 (Adjusted R2)	0.30(0.07)
F0 - 9 semitones High target
Age	−0.39	0.46	−0.31	0.41
LF 0.25-0.5	−0.26	0.37	−0.26	0.51
HF1-3	0.03	0.18	0.05	0.88
R2 (Adjusted R2)	0.09(−0.22)