Table 4.

Principal components analysis (with direct oblimin rotation) loadings of intervention study outcomes.

	Tinnitus		Psychological			h2
	Component 1	Component 2	Component 3	Component 4	Component 5
	Tinnitus influence—impact on life	Tinnitus—perceptual characteristics	Stress reduction/relaxation	Positive mood	Negative mood
TFI total score	0.787	0.608	0.076	0.027	0.003	0.995
Tinnitus loudness ratings	−0.493	0.860	0.075	0.005	−0.050	0.990
Tinnitus annoyance ratings	0.984	0.010	−0.052	−0.053	−0.085	0.982
Tinnitus loudness level match	0.984	0.010	−0.052	−0.053	−0.085	0.982
Tinnitus minimum masking level	0.134	0.967	0.047	−0.031	−0.115	0.969
Positive emotionality	−0.032	0.083	−0.310	0.898	0.039	0.912
Negative emotionality	0.118	0.112	−0.032	−0.318	0.788	0.750
Depression	−0.050	0.109	0.601	−0.730	−0.017	0.905
Anxiety	−0.171	0.053	0.887	−0.102	0.142	0.850
Stress	0.091	−0.037	0.856	−0.270	0.282	0.896
Attention reaction response times	−0.547	0.061	0.584	−0.278	−0.397	0.879
Attention discriminatory response times	−0.074	−0.447	0.258	0.685	−0.246	0.803
Personality: stress reaction	0.073	−0.027	−0.730	−0.041	0.558	0.853
Personality: self-control	−0.044	0.326	−0.252	0.636	0.481	0.808
Personality: social closeness	−0.083	−0.258	0.211	0.390	0.773	0.869
Personality: alienation	0.168	0.080	−0.072	−0.066	−0.713	0.552
% of variance explained by each factor	0.27	0.09	0.21	0.16	0.14	0.875

Eigen-value > 1 criteria applied. Correlations above 0.5 and total variance explained by principal components are presented in bold.