scholarly journals Los tamaños de las muestras en encuestas de las ciencias sociales y su repercusión en la generación del conocimiento

2017 ◽  
Vol 11 (22) ◽  
Author(s):  
Juan Rositas Martínez
Keyword(s):  
Factor Analysis ◽  
Sample Size ◽  
Confidence Intervals ◽  
Structural Equation ◽  
Size Factor ◽  
Sample Sizes ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
Alpha Effect ◽  
The Impact

Keywords: confidence intervals, Cronbach's alpha, effect size, factor analysis, hypothesis testing, sample size, structural equation modelingAbstract. The purpose of this paper is to contribute to fulfilling the objectives of social sciences research such as proper estimation, explanation, prediction and control of levels of social reality variables and their interrelationships, especially when dealing with quantitative variables. It was shown that the sample size or the number of observations to be collected and analyzed is transcendental for the adequacy of the method of statistical inference selected and for the impact degree achieved in its results, especially for complying with reports guidelines issued by the American Psychological Association. Methods and formulations were investigated to determine the sample sizes that contribute to have good levels of estimation when establishing confidence intervals, with reasonable wide and relevant and significative magnitudes of the effects. Practical rules suggested by several researchers when determining samples sizes were tested and as a result it was integrated a guide for determining sample sizes for dichotomous, continuous, discrete and Likert variables, correlation and regression methods, factor analysis, Cronbach's alpha, and structural equation models. It is recommended that the reader builds scenarios with this guide and be aware of the implications and relevance in scientific research and decision making of the sample sizes in trying to meet the aforementioned objectives.Palabras clave: análisis factorial, intervalo de confianza, alpha de Cronbach, modelación mediante ecuaciones estructurales, pruebas de hipótesis, tamaño de muestra, tamaño del efectoResumen. El propósito del presente documento es contribuir al cumplimiento de los objetivos de la investigación en las ciencias sociales de estimar, explicar, predecir y controlar niveles de variables de la realidad social y sus interrelaciones, en investigaciones de tipo cuantitativo. Se demostró que el tamaño de la muestra o la cantidad de observaciones que hay que recolectar y analizar es trascendente tanto en la pertinencia del método de inferencia estadístico que se utilice como en el grado de impacto que se logre en sus resultados, sobre todo de cara a cumplir con lineamientos emitidos por la Asociación Americana de Psicología que es la que da la pauta en la mayoría de las publicaciones del área social. Se investigaron métodos y formulaciones para determinar los tamaños de muestra que contribuyan a tener buenos niveles de estimación al momento de establecer los intervalos de confianza, con aperturas razonables y con magnitudes de los efectos que sean de impacto y se pusieron a prueba reglas prácticas sugeridas por varios autores lográndose integrar una guía tanto para variables dicotómicas, continuas, discretas, tipo Likert y para interrelaciones en ellas, ya se trate de análisis factorial, alpha de Cronbach, regresiones o ecuaciones estructurales. Se recomienda que el lector crear escenarios con esta guía y se sensibilice y se convenza de las implicaciones y de trascendencia tanto en la investigación científica como en la toma de decisiones de los tamaños de muestra al tratar de cumplir con los objetivos de la que hemos mencionado.

Θεματικά μουσεία της Ελλάδας και τουριστικό μάρκετινγκ

2021 ◽  
Author(s):  
Παναγιώτης Ιωακειμίδης
Keyword(s):  
Factor Analysis ◽  
Structural Equation Modeling ◽  
Exploratory Factor Analysis ◽  
Structural Equation ◽  
Word Of Mouth ◽  
Equation Modeling ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha

Η παρούσα διδακτορική διατριβή αποσκοπεί στο να καταγράψει την ικανοποίηση των επισκεπτών από τις παρεχόμενες υπηρεσίες στα θεματικά μουσεία της Ελλάδας, την πρόθεση συμπεριφοράς των επισκεπτών και κατά πόσο τεχνικές του τουριστικού μάρκετινγκ λαμβάνουν χώρα στα θεματικά μουσεία. Έγινε μία προσπάθεια να καταγραφούν οι απόψεις των ανθρώπων των θεματικών μουσείων και η αντίληψή τους σχετικά με το τουριστικό μάρκετινγκ, οι αντιλήψεις των επισκεπτών σχετικά με την εμπειρία που βιώνουν σε ένα θεματικό μουσείο, ο βαθμός ικανοποίησης τους, η υφιστάμενη κατάσταση που επικρατεί στα θεματικά μουσεία της χώρας και οι ενδεχόμενες αλλαγές που μπορούν να προκύψουν με απώτερο σκοπό την αύξηση της επισκεψιμότητας. Ένα αξιοσημείωτο της παρούσας έρευνας, είναι ένας σημαντικός αριθμός προσωπικών συνεντεύξεων με κατοίκους περιμετρικά των μουσείων που ερευνήθηκαν και η προσπάθεια καταγραφής των απόψεων και αντιλήψεων τους για τα μουσεία αυτά.Διενεργήθηκε επίσης μία ποσοτική έρευνα σε επισκέπτες θεματικών μουσείων της χώρας μας αλλά και στο ανθρώπινο δυναμικό που εργάζεται σε πολιτιστικούς οργανισμούς, καθώς και εκπαιδευτικούς. Διακρίνοντας τα μουσεία σε δημόσια και ιδιωτικά, σημαντική ήταν η καταγραφή απόψεων ότι στα περισσότερα δημόσια θεματικά μουσεία τα οποία λειτουργούν κάτω από την επίβλεψη του δημόσιου φορέα, δεν υπάρχουν συχνά δυνατότητες για καινοτομία και πρωτοτυπία. Τα πορίσματα της παρούσας διδακτορικής διατριβής είναι αρκετά σημαντικά λόγω της έλλειψης προηγούμενης έρευνας επάνω στα θεματικά μουσεία της Ελλάδας, από την οπτική του μάρκετινγκ και την αναγκαιότητα αυτού. Η πλειονότητα των ανθρώπων των θεματικών μουσείων με τους οποίους ήρθα σε επαφή, εντοπίζουν την ανάγκη για τεχνικές τουριστικού μάρκετινγκ στα μουσεία καθώς όλοι αντιλαμβάνονται ότι οι επισκέπτες αναζητούν ποιοτικότερες ψυχαγωγικές επιλογές, έχουν περισσότερες απαιτήσεις επισκεπτόμενοι ένα θεματικό μουσείο και ευελπιστούν σε μία βιωματική και διαδραστική εμπειρία που θα τους μείνει αξέχαστη. Σε αυτό το εγχείρημα, συνεργός είναι τα ποικίλα οπτικοακουστικά μέσα των νέων τεχνολογιών που ενισχύουν το βιωματικό χαρακτήρα της επίσκεψης και ερευνώνται στη διατριβή. Η παρούσα διατριβή αποτελεί μία πρώτη προσπάθεια χαρτογράφησης των τεχνικών τουριστικού μάρκετινγκ που χρησιμοποιούν τα θεματικά μουσεία της χώρας , τις σημαντικές ιδιαιτερότητες του τουρισμού που έχουν άμεση επίδραση στην επισκεψιμότητα των θεματικών μουσείων και τέλος προτάσσει ενέργειες και τεχνικές μάρκετινγκ για να δημιουργηθεί ένας ενάρετος κύκλος πολιτισμού - ψυχαγωγίας - οικονομίας. Για την επεξεργασία των δεδομένων της ποσοτικής έρευνας χρησιμοποιήθηκε το στατιστικό εργαλείο SPSS, αναλύθηκαν τα ευρήματα της Διερευνητικής Ανάλυσης Παραγόντων (Exploratory Factor Analysis) και των τεστ αξιοπιστίας με τον δείκτη Cronbach’s Alpha, εφαρμόζοντας και την μέθοδο Μοντελοποίησης Δομικών Εξισώσεων (Structural Equation Modeling, SEM) για τον έλεγχο των ερευνητικών υποθέσεων. Οι ερευνητικές υποθέσεις δημιουργήθηκαν έπειτα από ενδελεχή έρευνα μοντέλων που εφαρμόστηκαν σε προηγμένες μουσειολογικά χώρες, όπως η Ισπανία, η Ιταλία, η Ολλανδία κ.α. και μπορούν να ληφθούν σοβαρά υπόψιν στο κοινωνικό-οικονομικό περιβάλλον της Ελλάδας. Απώτερος στόχος του ερευνητικού μοντέλου είναι εάν ο επισκέπτης θα οδηγηθεί σε μελλοντική επίσκεψη (revisit ) ή θα αποτελέσει ο ίδιος κινητή διαφήμιση word-of-mouth του μουσείου που επισκέφθηκε.Η έρευνα αποτελεί οδηγό για μελλοντικές έρευνες που θα πλαισιώσουν ή θα συμπεριλάβουν τα θεματικά μουσεία για νέες μελέτες, όπως για παράδειγμα πολιτιστικές διαδρομές και είναι ένα χρήσιμο εργαλείο που έρχεται να καλύψει το ερευνητικό κενό που υπάρχει γύρω από το είδος των μουσείων αυτών.

scholarly journals PERAN INOVASI KONSUMEN DALAM MENCIPTAKAN NIAT BERPERILAKU (Survei Pada Konsumen SFA Steak & Resto Surakarta)

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Lamidi Lamidi ◽  
Marjam Desma Rahadhini
Keyword(s):  
Factor Analysis ◽  
Confirmatory Factor Analysis ◽  
Structural Equation Model ◽  
Structural Equation ◽  
Equation Model ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
Confirmatory Factor ◽  
Convenience Sampling

Penelitian ini bertujuan menganalisis pengaruh inovasi konsumen dengan beberapa faktor yang menjadi penentu niat berperilaku konsumen. Penelitian ini berupaya mengetahui pentingnya inovasi konsumen, dengan mempertimbangkan rasa terima kasih konsumen, citra restoran dalam berinovasi, dan kewajaran harga sebagai variabel mediasi. Penelitian ini merupakan survei. Pengumpulan data menggunakan kuesioner. Populasi penelitian adalah konsumen di wilayah Surakarta. Sampel ditentukan sebanyak 130 responden dengan metode convenience sampling, yaitu konsumen yang melakukan pembelian di SFA Steak & Resto Surakarta. Pengujian validitas menggunakan Confirmatory Factor Analysis (CFA), dan Cronbach’s Alpha untuk uji reliabilitas. Analisis data menggunakan Structural Equation Model (SEM) dengan program Amos. Temuan penelitian menunjukkan bahwa inovasi konsumen berpengaruh terhadap ucapan terima kasih dan citra restoran, tetapi tidak berpengaruh terhadap kewajaran harga; ucapan terima kasih berpengaruh terhadap kewajaran harga dan niat berperilaku; citra restoran berpengaruh terhadap kewajaran harga dan niat berperilaku; kewajaran harga tidak berpengaruh terhadap niat berperilaku. Implikasi penelitian hendaknya SFA Steak & Resto Surakarta perlu mempertimbangkan pembuatan menu-menu baru supaya semakin variatif pilihan konsumen, selain itu karyawan perlu mengucapkan terima kasih setelah memberikan pelayanan kepada konsumen.Kata kunci: inovasi konsumen, rasa terima kasih, kewajaran harga, citra restoran, dan niat berperilaku

scholarly journals Development and validation of an instrument to evaluate medical students' lifestyle

Medwave ◽  
2021 ◽  
Vol 21 (07) ◽  
pp. e8434-e8434
Author(s):  
Jhony de la Cruz Vargas ◽  
Daniel Orejón ◽  
Luis Roldan ◽  
Lucy Correa-López ◽  
Alonso Soto
Keyword(s):  
Factor Analysis ◽  
Medical Students ◽  
Construct Validity ◽  
Health Science ◽  
Validity And Reliability ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
Sphericity Test ◽  
Final Questionnaire ◽  
The Impact

Introduction It is required to have validated instruments in health science students that identify unhealthy habits and assess the impact of educational interventions and programs aimed at promoting a healthy lifestyle. Objective To evaluate the validity and reliability of an instrument to measure medical students' lifestyles. Methods A lifestyle questionnaire was developed using the Delphi technique by a group of experts. The final questionnaire was applied to 332 students of the School of Medicine of the Ricardo Palma University in 2017. A preliminary examination was carried out to assess preconditions for construct validity—including the correlation matrix, the Kaiser Meyer Olkin statistic, and the Bartlett sphericity test. Factor analysis was used for construct validity, and the possible resulting factors were extracted through the principal component analysis. Cronbach's alpha coefficient was calculated to assess the instrument reliability. Results In this study, 41.6% of participants were men with a mean age of 20 years (standard deviation = 3). The preconditions for the factor analysis were a Kaiser Meyer Olkin coefficient = 0.773 and a significant Bartlett sphericity test. For the 47 items of the final questionnaire, the factor analysis showed an explained variance of 56.7% with eigenvalues greater than one. Cronbach's alpha was 0.78. The final questionnaire could assume values between -23 to 151 points. Based on a cut point of 71 points, the prevalence of students with an unhealthy lifestyle was 73.6%. Conclusion The developed instrument has acceptable validity and reliability to measure lifestyle in medical students. For external validation, studies in other university populations are suggested.

scholarly journals Psychometric Properties of the Impact of Events Scale-Revised (IES-R) Among General Iranian Population During the COVID-19 Pandemic

2021 ◽  
Vol 12 ◽  
Author(s):  
Hamid Sharif Nia ◽  
Harpaljit Kaur ◽  
Fatemeh Khoshnavay Fomani ◽  
Pardis Rahmatpour ◽  
Omolhoda Kaveh ◽  
...  
Keyword(s):  
Factor Analysis ◽  
General Population ◽  
Convergent Validity ◽  
Goodness Of Fit ◽  
Validity And Reliability ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
Persian Version ◽  
Impact Of Events Scale ◽  
The Impact

Objective: The aim of this study was to translate and evaluate the validity and reliability of the Impact of Events Scale-Revised (IES-R) among the Iranian general population during the coronavirus disease 2019 (COVID-19) pandemic.Method: This study was methodological cross-sectional. It was conducted on an Iranian public population from April to July 2020 which was during the COVID-19 pandemic. Construct validity was determined through exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) with a total of 500 adults recruited via online data gathering. Reliability was checked through the average inter-item correlation (AIC), Cronbach's alpha, and McDonald's omega. Convergent and divergent validity was determined using Fornell and Larcker's approach.Results: The results showed that the Persian version of IES-R had three factors, including intrusion (six items), avoidance (seven items), and hyperarousal (five items), that explained 59.22% of the total variance of the IES-R. The CFA findings indicated that all goodness-of-fit indices confirmed the model fit. The Cronbach's alpha, McDonald's omega, composite reliability (CR), and maximal reliability were excellent, and the three factors have good convergent validity.Conclusion: The findings of this study indicated that the Persian version of the IES-R scale is efficient and useful to assess post-traumatic stress disorder among Iran general population in the COVID-19 outbreak.

scholarly journals THE CORRELATION BETWEEN RENEWABLE ENERGY KNOWLEDGE AND ATTITUDE: A STRUCTURAL EQUATION MODEL WITH FUTURE’S EDUCATORS

2019 ◽  
Vol 18 (6) ◽  
pp. 866-879 ◽  
Author(s):  
Murat Genç ◽  
Mustafa Akilli
Keyword(s):  
Preservice Teachers ◽  
Factor Analysis ◽  
Renewable Energy ◽  
Science Teachers ◽  
Structural Equation ◽  
Equation Modeling ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
Preservice Science Teachers ◽  
Positive Attitudes

It is important to create positive attitudes and enough knowledge for preservice science teachers about renewable energy for future. The aim of this research was to show the correlation between renewable energy knowledge and sub-dimensions of attitude towards renewable energy with Structural Equation Modeling (SEM). The research was conducted by the analysis of 1145 pre-service teachers’ answers to questionnaires data using SEM. Two questionnaires used for data collection which first was renewable energy knowledge scale that Cronbach’s alpha was .82 and the second was renewable energy attitude scale that Cronbach’s alpha was .87. Initially, Kaiser-Meyer-Olkin and Bartlett’s tests were done with SPSS to test appropriateness of subdimensions to factor analysis. Exploratory factor analysis was done for the subdimensions that were seen to be suitable for factor analysis and then structural model was tested with LISREL. At the end of the SEM test, it was found that there are positive relations between renewable energy knowledge of preservice teachers and their attitudes towards renewable energy. The more knowledge and attitudes about renewable energy can be improved, the more positive attitudes and behaviors will be provided to individuals and the efficient use of renewable energy types will be realized. Keywords: renewable energy knowledge, attitude towards renewable energy, structural equation modelling, preservice science teachers.

scholarly journals Factors influencing consumers’ impulse television buying decision at Best Buy Vietnam

2020 ◽  
Author(s):  
Ha Nam Khanh Giao ◽  
Nguyen thi Hong Mo
Keyword(s):  
Structural Equation Modelling ◽  
Perceived Risk ◽  
Structural Equation ◽  
Impulse Buying ◽  
Cronbach’S Alpha ◽  
Factors Affecting ◽  
Cronbach's Alpha ◽  
Factors Influencing ◽  
Equation Modelling ◽  
The Impact

This research aims to investigate the impact of the factors influencing consumers’ impulse television buying decision at Best Buy Vietnam (BBVN), by interviewing 560 consumers. The methods of Cronbach’s Alpha, EFA, CFA together with the Structural Equation Modelling (SEM) are used by the programs of SPSS and AMOS.The result shows that there are 03 factors affecting Impulse buying urge – in order of the decreasing importance: Attributes of company and products, Time available for watching television, Attraction of program host and celebrity. Impulse buying urge has a weaker impact on impulse television buying decision than Perceived risk, so that the research could raise some solutions for BBVN Management to serve the consumers better.

scholarly journals Validation of the Patient-Centred Care Competency Scale Instrument for Finnish Nurses

2021 ◽  
Vol 11 (6) ◽  
pp. 583
Author(s):  
Riitta Suhonen ◽  
Katja Lahtinen ◽  
Minna Stolt ◽  
Miko Pasanen ◽  
Terhi Lemetti
Keyword(s):  
Factor Analysis ◽  
Root Mean Square ◽  
Goodness Of Fit ◽  
Item Analysis ◽  
Healthcare Delivery ◽  
Mean Square ◽  
Cronbach’S Alpha ◽  
Patient Centred Care ◽  
Cronbach's Alpha ◽  
Confirmatory Factor

Patient-centredness in care is a core healthcare value and an effective healthcare delivery design requiring specific nurse competences. The aim of this study was to assess (1) the reliability, validity, and sensitivity of the Finnish version of the Patient-centred Care Competency (PCC) scale and (2) Finnish nurses’ self-assessed level of patient-centred care competency. The PCC was translated to Finnish (PCC-Fin) before data collection and analyses: descriptive statistics; Cronbach’s alpha coefficients; item analysis; exploratory and confirmatory factor analyses; inter-scale correlational analysis; and sensitivity. Cronbach’s alpha coefficients were acceptable, high for the total scale, and satisfactory for the four sub-scales. Item analysis supported the internal homogeneity of the items-to-total and inter-items within the sub-scales. Explorative factor analysis suggested a three-factor solution, but the confirmatory factor analysis confirmed the four-factor structure (Tucker–Lewis index (TLI) 0.92, goodness-of-fit index (GFI) 0.99, root mean square error of approximation (RMSEA) 0.065, standardized root mean square residual (SRMR) 0.045) with 61.2% explained variance. Analysis of the secondary data detected no differences in nurses’ self-evaluations of contextual competence, so the inter-scale correlations were high. The PCC-Fin was found to be a reliable and valid instrument for the measurement of nurses’ patient-centred care competence. Rasch model analysis would provide some further information about the item level functioning within the instrument.

scholarly journals The development of a contextually appropriate measure of psychological distress in Sierra Leone

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Rebecca Horn ◽  
Kanykey Jailobaeva ◽  
Stella Arakelyan ◽  
Alastair Ager
Keyword(s):  
Mental Health ◽  
Factor Analysis ◽  
Psychological Distress ◽  
Sierra Leone ◽  
Exploratory Factor Analysis ◽  
Internal Consistency ◽  
Phase 1 ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
Distress Scale

Abstract Background Studies of psychological distress in Sierra Leone have typically used measures which were developed for use in other contexts, and which often have not been adapted or validated for use in Sierra Leone. This has resulted in a lack of reliable information about the patterns of psychological distress within the population, which is a barrier to the development of effective and appropriate mental health services. The aim of the study was to develop a locally-appropriate measure of psychological distress for Sierra Leone. Methods The new measure consists of two instruments: the Sierra Leone Psychological Distress Scale (SLPDS) and a gendered measure of ability to carry out daily tasks—a Function scale—as an indication of the severity of distress. A three-phase mixed methods exploratory sequential study was conducted. Phase 1 was item generation and testing, leading to the development of a set of potential items for both instruments. Phase 2 was a small pilot study (N = 202) leading to the selection of the final set of items for both measures. Phase 3 was a validation phase where the SLPDS and the Function scale were administered with a larger sample of 904 respondents. Item analysis was used to assess the internal consistency of the scales, and Exploratory Factor Analysis to explore the properties of the SLPDS. Results Exploratory factor analysis using the principal axis factoring with an oblique rotation identified a three-factor structure for the 18-item SLPDS. Internal consistency for the SLPDS (Cronbach’s alpha = 0.89) and three subscales was good (Cronbach’s alpha > 0.73). The internal reliability of the male and female versions of the Function scale was also found to be acceptable (Cronbach’s alpha = 0.90 for the female scale and 0.79 for the male scale). Conclusions Together the SLPD and Function scales provide a locally-validated tool which will enable government bodies and local and international non-governmental organisations in Sierra Leone to assess mental health and psychosocial needs. This will support both effective service provision and the evaluation of initiatives designed to improve mental health and psychosocial wellbeing.

scholarly journals Validation of AQoL-8D: a health-related quality of life questionnaire for adult patients referred for otolaryngology

2021 ◽  
Author(s):  
Anita Obrycka ◽  
Jose-Luis Padilla ◽  
Artur Lorens ◽  
Piotr Henryk Skarzynski ◽  
Henryk Skarzynski
Keyword(s):  
Factor Analysis ◽  
Confirmatory Factor Analysis ◽  
Pearson Correlation ◽  
Adult Population ◽  
Life Questionnaire ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
Content Relevance ◽  
Confirmatory Factor ◽  
Item Content

Abstract Purpose The purpose of the study was to validate the AQoL-8D questionnaire in the adult population of patients referred to an otolaryngology clinic. Methods AQoL-8D was translated into Polish. 463 patients (age18–80 years) with otolaryngological conditions were assessed with the AQoL-8D, SF-6D, and SWLS questionnaires. We investigated the item content-relevance, factor structure by means of Confirmatory Factor Analysis, corrected item-total correlations, Cronbach’s alpha, Pearson correlation of the AQoL-8D scores with results from SF-6D and from the SWLS questionnaires. Finally, ANOVA was used to test the AQoL-8D ability to group the HRQoL of patients in terms of their otolaryngological management type. Results The median score of item content-relevance was 5.0 for all AQoL-8D items. Confirmatory Factor Analysis revealed the following fit indices: Comparative Fit Index = 0.81; Tucker–Lewis Index = 0.80; and Root Mean Square Error of Approximation = 0.07. Cronbach's alpha for AQoL-8D dimensions ranged from 0.48 to 0.79. Mean item-total correlations over all dimensions, super dimensions, and the instrument overall were higher than 0.3. There was a significant Pearson correlation between the results obtained with AQoL-8D and SF-6D (r = 0.68), and with AQoL-8D and SWLS (r = 0.43). A one-way ANOVA showed a significant effect of management type on HRQoL as measured by AQoL-8D [F(4,458) = 6.12, p < 0.001] Conclusion AQoL-8D provides valid and reliable measures of HRQoL in patients undergoing otolaryngological treatment. Because it is a generic questionnaire, it is possible to make general comparisons of otolaryngology outcomes with those from other subspecialties.

Assessment of Dementia Knowledge Scale for the Nursing Profession and the General Population: Cross-Cultural Adaptation and Psychometric Validation

2021 ◽  
pp. 1-8
Author(s):  
Merve Aliye Akyol ◽  
Seher Gönen Şentürk ◽  
Burcu Akpınar Söylemez ◽  
Özlem Küçükgüçlü
Keyword(s):  
Factor Analysis ◽  
Content Validity ◽  
Educational Interventions ◽  
Psychometric Validation ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
Income Status ◽  
Confirmatory Factor ◽  
Fit Indexes ◽  
Knowledge Scale

<b><i>Background:</i></b> The incidence of dementia is increasing dramatically worldwide. It is important to determine knowledge about the dementia for it’s prevention, early diagnosis, treatment, and care. The psychometric properties of the Turkish version of the Dementia Knowledge Assessment Scale (DKAS-T) were evaluated in this study. <b><i>Methods:</i></b> The psychometric study was conducted. A total of 1592 participants were recruited between November 2019 and March 2020. The data were collected using a sociodemographic form and DKAS-T. The language and content validity, exploratory factor analysis (EFA), and confirmatory factor analysis (CFA) were used to assess the validity of the scale. The scale’s reliability was obtained using Cronbach’s alpha coefficient, a paired sample <i>t</i>-test, item-total score correlation, and Hotelling’s <i>T</i>-squared test. <b><i>Results:</i></b> The mean age of the sample was 29.38 (±11.50) years; 66.8% (<i>n</i> = 1064) were female, and 54.1% (<i>n</i> = 861) reported their income status as income equal to expenditure. The DKAS-T demonstrated content validity and adequate sensitivity (Kendall <i>W</i> = 0.155, <i>p</i> = 0.093). The scale consisted of seventeen items and was unidimensional, which explained 28.705% of the variance. All the factor loadings were found to be &#x3e;0.30 in factor analysis. In CFA, all of the fit indexes were &#x3e;0.95 and root mean square error of approximation (RMSEA) was 0.033. A Cronbach’s alpha value of 0.836 was obtained for the entire scale. It was determined that the scale has invariance according to time (<i>t</i> = −1.362, <i>p</i> = 0.181). Homogeneity of the scale was 3.26%, and there was no absence of reaction bias (Hotelling’s <i>T</i>-squared = 2573.681, <i>p</i> &#x3c; 0.001). <b><i>Conclusion:</i></b> The results demonstrated that the instrument is reliable and generates valid data for the Turkish sample. This scale can be used to determine knowledge about dementia and planning educational interventions in the issue.

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