Relación entre la calidad de vida relacionada con la salud y la discapacidad en mujeres con vértigo de origen periférico

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ORIGINAL ARTICLE

Relationship between health-related quality of life and disability in women with peripheral vertigo Vanessa Vélez León,a Vanessa Lucero Gutiérrez,a Celia Escobar Hurtado,a and Robinson Ramirez-Velezb,* Universidad del Valle, Escuela de Rehabilitación Humana, Cali, Colombia Universidad del Valle, Departamento de Ciencias Fisiológicas, Bioquímica, Cali, Colombia

a

b

Received December 1, 2009; accepted March 16, 2010

KEYWORDS Dizziness; Disabilities; Quality of life

Abstract Objective: To study the relationship between disability and health-related quality of life in women with vertigo of peripheral origin. Methods: Cross-sectional study in 26 women diagnosed with vertigo, classified by type of peripheral vestibular disturbance: benign paroxysmal positional vertigo (BPPV), vestibular neuritis, Ménière’s disease, post-trauma and others. In a self-report interview, a 12-item shortform (SF-12) health survey on quality of life was applied; disability was assessed with the questionnaire “Dizziness Handicap Inventory” (DHI). Measures of central tendency, dispersion for the domains and types of vestibular disturbance were used and internal DHI consistency and inter-scale correlation were calculated. Results: Patients in the vestibular neuritis and Ménière groups displayed a higher level of disability according to the DHI functional (29.5±5.5 vs 27.0±8.8) and physical domains (23.0±4.1 vs 21.5±6.6). Based on the SF-12 domains, greater deterioration in quality of life was perceived in physical (22.9±3.9 vs 22.6±4.6) and emotional performance (15.4±5.0 vs 11.3±6.0), respectively. Acceptable and significant inverse correlations were found between the physical component summary (PCS-12) of the SF-12 and the physical, emotional and functional aspects of the DHI questionnaire (r=−0.51 to −0.78, P0.7). This instrument reflects the measurements of the PCS-12 (physical component) functional status and the MCS-12 (mental component) emotional status (12 items from 8 dimensions or domains).19 The number of response options ranges from 3-6 depending on the item; each question is assigned a value that is then transformed into a 0-100 scale, where 0 corresponds to the worst health status and 100 to the best health status (quality of life or perceived health).18 Additionally, a pilot study was conducted to estimate the average time for self-administration of the instruments, which was 16 min. To analyse the results we used the descriptive statistics criteria, tabulated and analysed with SPSS© version 11.5. We obtained the index (Cronbach’s a) for terms of internal consistency of each of the 3 aspects in the DHI in relation to the total. The Pearson correlation coefficient (r) was used to determine the relationship between the components (aspects and domains) of the SF-12 and the DHI. The differences in scores on the results of the SF-12 and DHI questionnaires between groups according to type of peripheral vestibular disorder was verified by oneway analysis of variance (ANOVA). A value of P