Exploratory factor analysis of the Dizziness Handicap Inventory (German version)

Kurre, Annette; Bastiaenen, Caroline HG; van Gool, Christel JAW; Gloor-Juzi, Thomas; de Bruin, Eling D; Straumann, Dominik

doi:10.1186/1472-6815-10-3

BMC Ear, Nose and Throat Disorders

Table 4 The three factor solution of the principal component analysis

From: Exploratory factor analysis of the Dizziness Handicap Inventory (German version)

			Factor 3.1:		Factor 3.2:		Factor 3.3:
Item	Abbreviated item description	Item mean (SD)	Effect of dizziness and unsteadiness on emotion and participation		Specific activities/movements or effort provoking dizziness or unsteadiness		self-perceived walking ability and feeling of postural stability in relation to contextual factors
			load	CI-TC	load	CI-TC	load	CI-TC
E 23	feeling depressed	1.8 (1.5)	0.792	0.68
E 2	feeling frustrated	2.4 (1.4)	0.757	0.59
E 21	feeling handicapped	2.3 (1.5)	0.653	0.76
F 24	job/house responsibilities	2.0 (1.6)	0.652	0.71
E 10	embarrassed in front of others	1.6 (1.9)	0.622	0.38
F 6	restriction of social activities	2.1 (1.7)	0.567	0.74
E 22	stressed relationships	1.3 (1.6)	0.563	0.65
F 3	restriction of travel	2.2 (1.7)	0.463	0.65
E 18	difficulties in concentrating	1.9 (1.5)	0.397	0.49
Cronbachs alpha				0.88
P 13	turning over in bed	1.7 (1.6)			0.747	0.52
P 11	quick head movements	2.9 (1.5)			0.726	0.55
P 1	looking up	2.3 (1.6)			0.707	0.48
F 5	getting into or out of bed	1.6 (1.6)			0.683	0.56
P 25	bending over	2.0 (1.7)			0.618	0.48
P 8	ambitious activities like sports	2.3 (1.7)			0.439	0.56
F 14	strenuous housework	2.1 (1.6)			0.410	0.60
F 7	difficulties in reading	1.5 (1.6)	0.200		0.253	0.35	0.209
Cronbachs alpha						0.80
P 17	walking down a sidewalk	1.1 (1.5)					0.713	0.58
F 19	walking around in dark	1.7 (1.7)					0.701	0.42
F 16	walking by yourself	1.2 (1.5)					0.623	0.61
E 15	afraid of appearing intoxicated	1.4 (1.7)					0.580	0.51
E 9	afraid of leaving home alone	1.0 (1.3)					0.572	0.58
P 4	walking down a supermarket aisle	1.8 (1.7)					0.553	0.51
F 12	avoid heights	2.3 (1.8)					0.543	0.43
E 20	afraid to stay home alone	0.5 (1.1)					0.416	0.44
Cronbachs alpha								0.79

The table indicates item statistics, factor loadings, corrected item-total correlations (CI-TC) and Cronbachs alpha correlation coefficients estimated in n = 194. Values of factor loadings are results of the pattern matrix. Bold face indicates loadings with absolute values of 0.6 or more. Loadings < 0.4 are not reported with exception of the values of F7, which has only low loadings. The 3-factor solution explained 49.2% of the variance.
Abbreviations: E indicates emotional subscale; F, functional subscale; P, physical subscale of the Dizziness Handicap Inventory - German version; load indicates factor loading.

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ISSN: 1472-6815

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