. 2018 Oct 10;13(10):e0202634. doi: 10.1371/journal.pone.0202634

Table 8.

		Unstandardized Coefficients		Standardized Coefficients	t	Sig.	95% CI for B
		Unstandardized Coefficients		Standardized Coefficients			Lower Bound	Upper Bound
Model		B	Std. Error	Beta			Lower Bound	Upper Bound
1	(Constant)	1·407	0·040		10·175	<0·001	1·330	1·485
	TPO	1·679	0·150	0·187	11·158	<0·001	1·384	1·974
2	(Constant)	1·346	0·075		4·613	<0·001	1·199	1·492
	TPO	1·661	0·182	0·185	9·146	<0·001	1·305	2·017
	Side	0·058	0·038	0·026	1·538	0·124	-0·016	0·132
	%SS	-0·385	0·425	-0·032	-0·905	0·365	-1·218	0·448
	%SS-TPO Interaction	0·510	1·582	0·012	0·322	0·747	-2·593	3·612

Hierarchical multiple regression for Experiment 2 using Percentage of Stuttered Syllables. B = unstandardized coefficients. TPO = Time before Prefix Onset. Side = Side of tongue recording. %SS = Percentage of Stuttered Syllables. %SS was a continuous variable including all previously included data from both groups. The constant of the regression was tested against an H0 of B = 1, instead of the normal B = 0.