Table 6.

Coefficients of a hierarchical regression analysis where scores in FEDA‐1 (distractibility) are the dependent variable.

	Model	Non‐standardized coefficients		Standardized coefficients	T	P‐value	Collinearity
		B	SE	β			Tollerance	VIF
1	(Costant)	55.245	6.637		8.324	0.000
	Verbal attention span	0.413	0.724	0.067	0.570	0.571	0.945	1.058
	Intrinsic alertness (RTs)	−0.025	0.013	−0.244	−1.882	0.064	0.768	1.302
	Divided attention (omissions)	−0.615	0.449	−0.180	−1.370	0.175	0.744	1.344
2	(Costant)	63.755	4.981		12.800	0.000
	Verbal attention span	−0.028	0.537	−0.004	−0.052	0.959	0.918	1.089
	Intrinsic alertness (RTs)	−0.016	0.010	−0.162	−1.690	0.096	0.751	1.331
	Divided attention (omissions)	−0.076	0.338	−0.022	−0.224	0.823	0.703	1.422
	Anxiety	−1.321	0.390	−0.485	−3.386	0.001	0.336	2.980
	Depression	−0.637	0.422	−0.227	−1.510	0.136	0.305	3.275
3	(Costant)	70.292	5.038		13.953	0.000
	Verbal attention span	0.155	0.503	0.025	0.307	0.760	0.907	1.102
	Intrinsic alertness (RTs)	−0.010	0.009	−0.098	−1.071	0.288	0.717	1.395
	Divided attention (omissions)	−0.082	0.314	−0.024	−0.262	0.794	0.703	1.422
	Anxiety	−0.807	0.395	−0.297	−2.044	0.045	0.284	3.526
	Depression	−0.297	0.406	−0.106	−0.731	0.4607	0.286	3.500
	Fatigue	−0.602	0.182	−0.404	−3.308	0.002	0.400	2.501