Browsing by Author "Fidaner, C"

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    The Reliability and Validity of the Turkish Version of the World Health Organization Quality of Life Instrument-Older Adults Module (WHOQOL-Old)
    Eser, S; Saatli, G; Eser, E; Baydur, H; Fidaner, C
    Purpose: To determine the psychometric properties of the Turkish version of the World Health Organization Quality of Life Instrument-Older Adults Module (WHOQOL-Old). Methods: The Turkish version of the WHOQOL-OLD was administered to 527 older (> 65 years) adults living in urban, suburban, and rural areas of Manisa Province, Turkey. The WHOQOL-OLD module consists of 24 items assigned to 6 facets (sensory abilities, autonomy, past, present and future activities, social participation, death and dying, and intimacy) and is a supplementary module of WHOQOL-BREF The WHOQOL-BREF and GDS-30 were also administered to the participants. A confirmatory approach was used during reliability and validity analysis. SPSS v. 10.0 and LISREL v.8.54 were used for analysis. Results: Mean age of the participants was 71.06 +/- 5.20 years and the overall WHOQOL-OLD score was 56.02 +/- 11.86. In all, 54.5% of the participants were female and 60.5% reported to be in poor health. Both ceiling and floor effects of the WHOQOL-OLD were satisfactory (<0.05%). Alpha values for the facets and overall scale (range: 0.68-0.88) (> 0.70), and item total correlations and overall scale success were satisfactory. As a measure of the construct validity of the scale, confirmatory factor analysis showed very high CFI values (range: 0.936-0.999) for each of the domains. Convergence of WHOQOL-OLD facet scores on WHOQOL-BREF domains and WHOQOL-OLD were very fine in general. Conclusions: The psychometric properties of the Turkish version of the WHOQOL-OLD were acceptable, indicating that the scale is reliable and valid for use with older Turkish adults (> 65 years).
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    Derivation of Response Scales for WHOQOL TR The Effect of the Level of Education on the Use of Visual Analog Scales
    Eser, E; Fidaner, H; Eser, SY; Fidaner, C; Elbi, H
    This study has two objectives: One is to demonstrate the Likert-type response scale generation for the Turkish version of the WHOQOL. The other is to show the effect of level of education of the subjects to translate their perception into a rating on a Visual Analog Scale (VAS). WHOQOL questions have four types of response scales: frequency, evaluation, capacity, and intensity. The WHOQOL cross-cultural response scale methodology is based on the VAS. Fifty-one low-level educated subjects from the initial study population (n = 228) were excluded by applying two special exclusion criteria, because of the reliability problems. Those subjects with 8 years and less education were more likely than those with 11 years'(OR = 0.25%; 95 CI 0.11-0.56) and 15 years' and more education (OR = 0.11; 95% CI 0.04-0.29) to be excluded from the study. After translating anchor points into Turkish, the VAS were prepared for each of the response scales (intensity, capacity, frequency, and evaluation). A list of descriptors-16 for frequency, 15 for capacity and intensity, 16 and 14 for evaluation scales-were compiled from dictionaries and the relevant literature. Each descriptor was placed on a 10 cm fresh line in a random order in every scale. The study subjects were asked to place a mark on a 10 cm line for each descriptor, according to where they think the descriptor lies in relation to the anchor points. In order to select the intermediate descriptors for each scale, mean distances for each descriptor were calculated and target intermediate descriptors were found for each scale by applying WHOQOL response scale methodology. The intra-class correlation coefficients (ICC), which indicate the interrater reliability in the current setting, were calculated in the included study population (n = 177) for each education category separately. ICCs were found as 0.39 for 5 years', 0.46 for 8 years', 0.66 for 11 years', and 0.79 for 15 years' and more education categories. Categories of at least 11 years' education were found to show sufficient interrater reliability. The mean and the variabilities of the target descriptors produced similar results with the initial 15 WHOQOL centers. On the other hand, the obtained results indicate that visual analog scale methodology should be used with caution on subjects educated less than 9 years in the Turkish context.
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    PSYCHOMETRIC PROPERTIES OF THE TURKISH VERSION (AYTA-TR) OF THE WHO-EUROPE ATTITUDES OF AGING (EAAQ) QUESTIONNAIRE
    Eser, E; Gerçeklioglu, GS; Eser, S; Fidaner, C; Baysan, P; Pala, T; Dündar, P
    Introduction: This study was carried out for psychometric analysis of the Turkish version of the WHO - Atittudes of Aging Questionnaire (AAQ). Materials and Method: AAQ consists of 24 items classified in three domains (Psychosocial Loss-PL; Physical Change-PC and Psychological Growth-PG) with 8 items each (min8 max40). Turkish centre results are presented in this EU FP 5th funded international project (n=833). Internal consistency analysis, Construct validity, Convergent - Divergent validity and Known Groups validity were used. Results: 38.7 % of the sample was male, with a mean age 72.7 +/- 6.1. Alpha values of the domains PL, PC ve PG were 0.75, 0.74 and 0.62 respectively. 7th item of the PC and 4th item of the PG violate the internal consistency. BD was the most affected domain by income and objective health (ES=0.50). PL and PC scores were higher among married and who received support(p>0.05). CFA resulted acceptable fit for PC domain (RMESEA=0.09; CFI=0.93); borderline for PC domain and a poor fit for PG domain. Satisfactory covergent-divergent validity results were obtained between WHOQOL and AAQ scales. Conclusion: Results revealed that psychometric properties of Turkish version of the AAQ can be used for the assessmnet of the attitudes of aging but Psychosocial domain results should be interpreted with caution.