Total Cronbach's Alpha Coefficient Research Articles

Reliability and validity verification of the expanded prostate cancer index composite 26-item version in Chinese

Objective To analyze the reliability and validity of the Expanded Prostate cancer Index Composite 26-item version (EPIC-26) in Chinese patients with prostate cancer. Methods Totally 402 patients with prostate cancer at the Fudan University Shanghai Cancer Center were invited to fill in the Chinese version of EPIC-26. 402 samples were divided into two parts by random number table method. 201 samples were analyzed by exploratory factor analysis and another 201 samples were analyzed by confirmatory factor analysis. Results The total Cronbach alpha coefficient of Chinese version EPIC-26 was 0.845, and the Cronbach′s α coefficient of each domain ranged from 0.576 to 0.957. The results of exploratory factor analysis showed that the Chinese version of EPIC-26 was a 5-factor model, which could explain 63.456% of the total variance. The results of confirmatory factor analysis were as follows: χ2/df=1.641, GFI=0.863, AGFI=0.829, NFI=0.886, IFI=0.952, CFI=0.951, TLI=0.944, RMSEA= 0.057, which all met the standard of model fitting. Conclusion The Chinese version of EPIC-26 is a reliable and valid tool which is suitable for assessing the health-related quality of life of Chinese patients with prostate cancer. Key words: Expanded Prostate cancer Index Composite 26-item version; Exploratory factor analysis; Confirmatory factor analysis

Reliability and Concurrent Validity of a Culturally Adapted Persian Version of the Brace Questionnaire in Adolescents With Idiopathic Scoliosis

Study DesignCross-sectional. ObjectivesTo determine the validity and reliability of culturally adapted Persian version of the Brace Questionnaire (P-BrQ). Summary of Background DataThe BrQ has proved to be a reliable and valid instrument for evaluating the quality of life of adolescents with idiopathic scoliosis and has been translated to different languages. But, lack of a Persian translated version makes its use impractical in the Persian speaking scoliotic patients. MethodsForward and backward translation of P-BrQ was conducted according to the International Quality of Life Assessment guidelines. The final version of the P-BrQ was administered to 51 adolescents (1 boy and 50 girls) with idiopathic scoliosis. The mean age of the participants was 13.88 ± 2.14 years. The questionnaire's internal consistency was determined using Cronbach's alpha. A subgroup of 38 participants were randomly selected to complete the BrQ for a second time one week later. The test-retest reliability was then analyzed using the intraclass correlation coefficient, while the concurrent validity was assessed by comparing the BrQ with the Scoliosis Research Society-22 questionnaire. ResultsThe total Cronbach's alpha coefficient of the P-BrQ was 0.96, and the overall intraclass correlation coefficient of the questionnaire was also 0.96. The intraclass correlation coefficients for the corresponding domains were as follows: general health perception, 0.96; physical functioning, 0.96; emotional functioning, 0.98; self-esteem, 0.80; vitality, 0.97; school activity, 0.98; pain, 0.97; and social functioning, 0.98. ConclusionsThe culturally adapted Persian version of the BrQ can be used to assess the quality of life of adolescents with idiopathic scoliosis who wear a brace. Level of EvidenceII.

ATTITUDE TOWARDS TECHNOLOGY FOR PRE-SERVICE SCIENCE TEACHERS IN INDONESIA: AN EXPLORATORY FACTOR ANALYSIS

Technological knowledge and skill are crucial for teachers and pre-service teachers because they have a direct effect on performance, learning quality, and wider world access. Many studies showed that the ability of a teacher in technology-integrated pedagogy is influenced by their attitude towards technology. The aim of this study was to use exploratory factor analysis in examining the structural factors, the preference level and the interrelationship among components of attitude towards technology. Data was collected from 150 pre-service science teachers in Lampung University by using traditional survey method. Additionally, variance, mean values comparison, and Cronbach Alpha coefficients were analyzed in explaining the contributions of items and factors to the overall attitude towards technology. Pearson correlation analysis was also conducted to find out the relationship among components. The results confirmed the validity of instrument with loading factors ranging from 0.427–0.882. In addition, the total Cronbach Alpha coefficient was 0.810 which informed a high internal consistency of instrument with five components of technological attitude account for 77.82% of variance. Specifically, the perceived consequence of technology is identified as a dominant attitudinal preference of preservice science teachers in Indonesia, followed by career aspirations and gender difference. Pearson productmoment analysis revealed a significant correlation among components of attitude towards technology.

Validation and reliability study of a ventilator usability assessment tool

Background: Usability is an index to assess a product from the viewpoint of users satisfaction, efficiency and productivity improvement. The main attributes of usability that are derived from the human factors are and used in usability design of the interfaces Include: compatibility, consistency, flexibility, minimal action, perceptual limitation, usefulness, learnability, ease of use, minimal memory load, user guidance, satisfaction and errors. The main aim of this study was to assess the usability of interface design tool for a ventilator utilized in the hospitals of Arak city, Iran; and study its validation and reliability. Methods and Materials After constructing the initial questionnaire from the standard sources, specific techniques to determine the validity, and Cronbach's alpha coefficient were used for the validity and reliability study. The study procedure was: determining the scope and dimensions of the questions, drafting questionnaire, assigning members of the expert panel, study, questionnaire data acquisition and analysis methods, determining acceptance criteria of the questions and the content validity and reliability index. Results Final tool was a 42-items questionnaire. The content validity index (CVI) of questionnaire was 0.86. The results showed that the total Cronbach's alpha coefficient was 0.89 as an acceptable value for the reliability of questionnaire. Conclusion After the final questionnaire design and the appropriate validity and reliability of it, adopting this tool to assess the usability of breathing apparatus (ventilator) is recommended. With usability assessment of such vital instruments, quality improvement, higher efficiency and productivity as well as errors reduction and good design user interface will be achieved. Keywords: usability, ventilator, evaluation questionnaire, content validity, reliability

Development of an oral anticoagulant-use attitude scale, and assessment of its validity and reliability

Objectives:To develop a reliable scale that can measure the attitudes of individuals using oral anticoagulant drugs (OACs).Methods:This methodological study was conducted with 296 followed-up individuals using OACs for at least 6 months and visiting the cardiology and neurology clinics of a hospital in Turkey during 2017. A 20-item pool was used to construct the scale and all items were found suitable after content validity analysis and preliminary testing. Construct validity was examined using confirmatory factor analysis (CFA) and exploratory factor analysis (EFA).Results:The Kaiser-Meyer-Olkin (KMO) value of the scale (0.79) and results of Bartlett’s test showed that the sample size was suitable for factor analysis (p<0.001). The total Cronbach alpha coefficient of the scale was 0.83. Factor analysis to assess construct-content validity of the scale identified 4 factors (variance, 54%). Using a path diagram in CFA, Chi-square/df ratio values was calculated at 2.807, standardized root mean square residual (SRMR) at 0.093, comparative fit index (CFI) at 0.879, and root mean square error of approximation (RMSEA) at 0.078.Conclusions:We found that the OACAs we developed had high reliability and validity.

Validity and reliability of functional assessment of chronic illness treatment-fatigue scale in Turkish patients with type 2 diabetes

BackgroundA long-term diabetic complication, fatigue, which is a direct result of treatment and psychological processes, is a common symptom in diabetic individuals. AimsTo determine the reliability and validity of Functional Assessment of Chronic Illness Treatment-Fatigue Scale in Turkish patients with type 2 diabetes. Study designA methodological study. MethodsThe sample consisted of 133 patients with type 2 diabetes who agreed to participate in the study and met the criteria for the study. Data were collected using the descriptive information form prepared by the researcher and the Scale obtained from FACIT System. The research data were collected by face-to-face interviews with the patients. Language and content validity of the Turkish version of the Scale was provided, Cronbach's Alpha coefficient, test–retest analysis and item analysis methods were used as reliability analysis. ResultsThe total Cronbach Alpha coefficient of the scale was found to be 0.92. According to the results of factor analysis, unlike the original scale, two sub-dimensions emerged in the Turkish version of the scale. ConclusionsAs a result of the validity and reliability analysis of the FACIT-Fatigue Scale, it can be said that it provides psychometric measures that can be used to determine the level of fatigue of type 2 diabetes patients in Turkish society.

Validity and reliability of functional assessment of chronic illness treatment-fatigue scale in Turkish patients with type 2 diabetes

BackgroundA long-term diabetic complication, fatigue, which is a direct result of treatment and psychological processes, is a common symptom in diabetic individuals. AimsTo determine the reliability and validity of Functional Assessment of Chronic Illness Treatment-Fatigue Scale in Turkish patients with type 2 diabetes. Study designA methodological study. MethodsThe sample consisted of 133 patients with type 2 diabetes who agreed to participate in the study and met the criteria for the study. Data were collected using the descriptive information form prepared by the researcher and the Scale obtained from FACIT System. The research data were collected by face-to-face interviews with the patients. Language and content validity of the Turkish version of the Scale was provided, Cronbach's Alpha coefficient, test–retest analysis and item analysis methods were used as reliability analysis. ResultsThe total Cronbach Alpha coefficient of the scale was found to be 0.92. According to the results of factor analysis, unlike the original scale, two sub-dimensions emerged in the Turkish version of the scale. ConclusionsAs a result of the validity and reliability analysis of the FACIT-Fatigue Scale, it can be said that it provides psychometric measures that can be used to determine the level of fatigue of type 2 diabetes patients in Turkish society.

The Reflection of the Consumers’ Spiritual Perspective to the Materialism: A Case from Turkey

Abstract The purpose of the study is to investigate the effect of spiritual well-being on materialism, to contribute the marketing literature and to create awareness to marketing practitioners in developing marketing strategies. The research was conducted on 1243 people 18 and upper age, living in Turkey. Data was collected by online survey in 2018. Data tool has two dimensions; the first scale which includes three sub-dimensions (transcendence, harmony with nature and anomie) was used to measure spiritual well-being -scale's validity and reliability were done by Ekşi and Kardaş (2017)-. And the second scale was used to measure materialism -scale's validity and reliability was done by Richins (2004) and the Turkish translation was done by Tiltay (2014)-. The first dimension which measures the spiritual well-being (29 expressions) total Cronbach alpha coefficient is 0,890. The second dimension which measures the materialism (6 expressions) total Cronbach alpha coefficient is 0,767. The results indicate that the spiritual well-being explain the materialistic attitudes significantly but at a low level. Transcendence and Anomie, which are the sub-dimensions of spiritual well-being, have positive relations -not negative- with materialistic attitudes opposite to expectations is another result of study. Especially the anomie is found as the most powerful sub-dimension that explains materialistic attitudes. Harmony with nature, another sub-dimension of spiritual well-being, is found to have no significant relation with materialistic attitudes.

The Reflection of the Consumers’ Spiritual Perspective to the Materialism: A Case from Turkey

The purpose of the study is to investigate the effect of spiritual well-being on materialism, to contribute the marketing literature and to create awareness to marketing practitioners in developing marketing strategies. The research was conducted on 1243 people 18 and upper age, living in Turkey. Data was collected by online survey in 2018. Data tool has two dimensions; the first scale which includes three sub-dimensions (transcendence, harmony with nature and anomie) was used to measure spiritual well-being -scale's validity and reliability were done by Ekşi and Kardaş (2017)-. And the second scale was used to measure materialism -scale's validity and reliability was done by Richins (2004) and the Turkish translation was done by Tiltay (2014)-. The first dimension which measures the spiritual well-being (29 expressions) total Cronbach alpha coefficient is 0,890. The second dimension which measures the materialism (6 expressions) total Cronbach alpha coefficient is 0,767. The results indicate that the spiritual well-being explain the materialistic attitudes significantly but at a low level. Transcendence and Anomie, which are the sub-dimensions of spiritual well-being, have positive relations -not negative- with materialistic attitudes opposite to expectations is another result of study. Especially the anomie is found as the most powerful sub-dimension that explains materialistic attitudes. Harmony with nature, another sub-dimension of spiritual well-being, is found to have no significant relation with materialistic attitudes.

Evidences of Validity of The Brazilian Scale of Learner's Attitude Towards Distance Education Programs

Online learning is one of the fastest growing trends in educational uses of technology. In this study, an instrument to measure the social attitudes of the Brazilian students based on distance education was developed and validated. The study population consisted of public administration undergraduate students that has been providing by distance education by University of Brasília, in Brazil. The sample of the study consisted of 590 Brazilian students. The scale has 41 items, with total Cronbach alpha coefficient of .94, and reliability coefficient (KMO) of .94. The correlations of each item with total point were between .30 and .79. A factor analysis was run using direct oblimin rotation for construct validity, resulting in 4 factors structure explaining 47.12% of total variability. These factors are “Personnel and Dispositional Aspects”, “Procedural Characteristics”, “Negative Affects” and “Internalization and habituation of usage”. Consequently, findings show that The Brazilian Attitude Scale towards Distance Education (BrazilASTDE) is a valid and reliable instrument.

Development and psychometric evaluation of the arterial puncture self-efficacy scale

BackgroundArterial puncture for arterial blood gases (ABG) analysis can be a risky, painful, difficult-to-perform procedure that is often insufficiently practised and generates stress and discomfort amongst patients and healthcare professionals. Self-efficacy is a key component in the acquisition of procedural skills. Therefore, professionals' self-efficacy in arterial puncture should be measured before attempting the procedure on real patients. ObjectiveTo develop and psychometrically assess a self-efficacy scale in arterial puncture. DesignAn observational cross-sectional design was used in this study. SettingFaculty of Education Sciences, Nursing and Physiotherapy in a higher education institution in the south of Spain. ParticipantsA convenience sample of 342 nursing students entered and completed the study. All participants met the following inclusion criteria: (1) ≥18years old and (2) enrolled in a nursing degree programme during the 2014/2015 academic year. Participants were 74% female (n=254) and their age ranged from 18 to 50, with a mean age of 21.74years (SD=5.14). MethodThe Arterial Puncture Self-Efficacy Scale (APSES) was developed and psychometrically tested. Reliability and content validity were studied. Predictive validity and concurrent validity assessed criterion validity. In addition, principal component analysis and known-group analysis evaluated construct validity. ResultsPrincipal component analysis revealed the two-subscale structure of the final 22-item version of the Arterial Puncture Self-Efficacy Scale (APSES). A total Cronbach's alpha coefficient of 0.97 showed its high reliability. The APSES' content validity index was excellent (S-CVI/Ave=0.95). Predictive and concurrent validity analysis demonstrated the good criterion validity of the tool. Supporting the APSES' sensitivity and specificity, known-groups analysis evidenced significant differences (p<0.001) in self-efficacy levels between groups. ConclusionThe APSES showed good psychometric properties for measuring self-efficacy in arterial puncture for ABG analysis.

Validation and reliability of Turkish Singing Voice Handicap index

This study aims to constitute a valid and reliable Turkish version of the original Singing Voice Handicap Index. An authorized committee assessed the reliability and validity of the content, scope, and language of the original Singing Voice Handicap Index which underwent a back translation process. The Turkish version of the questionnaire was answered twice with a 7 to 10-day interval by two singing voice groups with or without singing voice problems. The reliability and validity analyses were performed based on these answers. Of a total of 123 individuals (64 females, 59 males; mean age 26.2±7.3 years), 81 were without a voice pathology and 42 were with a voice pathology. The total Cronbach's alpha coefficient was 0.917. The item-total correlations ranged between 0.51 and 0.89. The weighted kappa values of test-retest correlation values of the items were 0.82-0.91. The Cronbach's alpha values of two part of the questionnaire based on the split-half method were 0.89 and 0.84. The mean total scale scores were 21.8±18.5 and 53.6±28.9 in normal and pathology groups, respectively and there was a statistically significant difference in scores between these two groups (p=0.000). The Turkish version of the Singing Voice Handicap Index is a valid and reliable scale which can be used in the evaluation of voice problems of Turkish-speaking singing voice users.

Development and evaluation of competency scale for emergency physicians

Objective To construct and assess the competency scale for emergency physicians in our country. Methods Learning from the milestone project in America, we developed the scale through Delphi method. The application effect was evaluated among 81 emergency physicians by questionnaire survey. Excel was used to do data entry. SPSS 20.0 was adopted to do data analysis. Factor analysis method was employed to verify the structure validity of the scale. Results The competency scale comprises six dimensions and 13 items. The scale of total Cronbach's alpha coefficient was 0.98 and the split half reliability was 0.95. Two factors were extracted by principal component analysis with cumulative contribution rate of 86.5%. The differ-ences of competency score on six aspects of different ages, titles, working years and training situation were tested and all had statistically significant difference (P<0.01). Conclusion The scale developed in our study can reflect the growth stage of the emergency physicians and serve the purpose as an evaluation tool for the competency of emergency physicians in our country. Key words: Emergency physicians; Competency; Scale; Evaluation

Validity and reliability study of the Tilburg Pregnancy Distress Scale into Turkish.

This study was conducted to adapt the Tilburg Pregnancy Distress Scale (TPDS) into Turkish and test its validity and reliability. The study was conducted in six Family Health Center regions in the province of Kars between 20 February and 10 April 2013. A total of 275 pregnant women, who met the study criteria and agreed to participate in the study, constituted the sample group of the study. For validity and reliability analysis of the scale, content validity analysis, explanatory and confirmatory factor analysis, and Cronbach's alpha coefficient were used. It was found that the two-factor structure of the scale was valid and its fit indices were appropriate. The total Cronbach's alpha coefficient of the scale was 0.83. The cut-off point of the scale was specified as 28 for its total score. As a consequence, the adaptation of the TPDS into Turkish was determined to be a valid and reliable measurement instrument. Assessment of distress levels of pregnant women constitutes an important area for both midwives and mental health nursing.

The Attitude Scale Towards Distance Nursing Education (astDNE)

In this study, a measurement is seen as an instrument to measure the attitudes of the nurses towards the distance nursing education was developed. The study population consist of nurses who working in two hospitals of the ministry of health and two special hospitals in Istanbul. The sample of the study consisted of 194 nurses who agreed to participate in this study. The scale total cronbach alpha coefficient was found .94, test-retest reliability coefficient .89. The correlations of each item with total point were between .49 and .69. In factor analysis done with varimax rotation for construct validity, whose eigenvalue is over 1, explaining 65.02 % of total variability, 5 factors consisting of 25 items was obtained the scale. These factors are called “Interaction”, “Learning Styles”, “Support Services”, “Interaction Tools” and “Content Presentation”. Consequently, findings show that The Attitude Scale towards Distance Nursing Education (astDNE) is a valid and reliable instrument.

Development and psychometric test of the Assessment Scale for Patient Safety Culture in ICU

Objective To develop the Assessment Scale for Patient Safety Culture in ICU and do psychometric test.Methods The Assessment Scale for Patient Safety Culture in ICU was developed based on literature review,qualitative interview,and two-round Delphi consultation.The reliability and validity were tested among 235 chnical nurses and doctors in ICU.Results A 45-item questionnaire was originally developed and eleven of them were deleted after subjective screening,project analysis and exploratory factor analysis.Seven factors were extracted with cumulative contribution rate of 59.347％.The scale of total Cronbach's alpha coefficient was 0.909; the split half reliability was 0.832.Each dimension of Cronbach's alpha coefficient was between 0.481～0.909,and the split half reliability was 0.481～0.866.All had significance in statistics above.Conclusions The Assessment Scale for Patient Safety Culture in ICU has good reliability and validity,which can be used to evaluate the ICU patient safety culture atmosphere domestically. Key words: ICU; Patient safety culture; Assessment scale; Reliability; Validity

Implementation of OSCE test to develop appropriate tool to measure mothers' parenting skills.

Introduction:Parents play a vital role throughout a child’s life. This role is very significant in the beginning years of a child’s life. In this period, the child encounters new experiences and these experiences make him or her to learn and grow. These days, in order to help the parents build a bright future for their children, different parenting programs have been designed. These programs provide a great opportunity for parents to enhance positive parenting skills. The aim of this study was to design a reliable and valid instrument for assessing the mothers’ parenting skills.Methodology:44 mothers who had children aged 3–8 were invited to participate in this study. They took part in parenting-skills training sessions for more than two months. Then they were asked to attend the test center after six months to be tested on trained skills. In this study, mothers’ parenting skills were measured by the OSCE test. The reliability of the test was determined with three methods including split half, Cronbach alpha, and correlation between assessors’ scores in two similar stations. The construct validity of the test was determined with Explanatory Factor Analysis.Results:The total Cronbach alpha coefficient obtained was 0.83 which indicated that the test had a high internal reliability. The Spearman correlation coefficient obtained for two halves of the test was 0.76. The results of Explanatory Factor Analysis showed that nine stations of OSCE were focused on two factors. The first factor was named positive positions and the second factor was named negative positions.Conclusion:The designed OSCE test has the suitable psychometric features to be used by researchers to assess mothers’ parenting skills.

Revize Edilen Hemşirelerin Mesleki Değerleri Ölçeği Türkçe Formunun Güvenirlik ve Geçerliği

Aim: This study was conducted to examine the validity and reliability of the Turkish version of the Revised Nursing Professional Values Scale (NPVS-R). Method: The study planned methodologically was conducted with 97 nurses and 228 nursing students. The semantic equivalence of the scales were obtained using forward-back translation techniques. The data was collected with a questionnaire and the Turkish version of the NPVS-R. Expert opinions for content validity was assessed by Content Validity Index.Construct validity of the scale was analyzed with principal component factor analysis with varimaks rotation. Reliability of the scale was determined with the test-retest reliability and, Cronbach’s alpha coefficients and item analysis for internal consistency. Results: The Turkish version of the scale had good content validity (CVI=0.95). The scale total cronbach alpha coefficient was found 0.96, and test-retest reliability coefficient 0.90, and item-total correlation coefficient was found between 0.47 to 0.79. The factor analysis results demonstrated in a three-factor solution explaining 66.42% of the total variance that was different from the original scale.Construct validity was supported with an overall factor loading range of 0.49-0.82. The factors labeled as Caring, Professionalism and Trust. Conclusion: The findings of analyzes carried out for the adaptation of the Turkish community of the Nurses Professional Values Scale, the Turkish version of the scale showed that reliable and valid as unidimensional a tool in examining of the nursing values. Key Words: Professional values, nursing, reliability, validity.

HEMOPHILIA-SPECIFIC QUALITY OF LIFE INDEX (Haemo-QoL AND Haem-A-QoL QUESTIONNAIRES) OF CHILDREN AND ADULTS: Result of a Single Center from Turkey

The aim of this study is to describe the health status, health care received, and their impact on the quality of life in patients with hemophilia. Patients with severe factor VIII or IX deficiency without inhibitors or other chronic disease were enrolled. Turkish version of the Hemophilia-Specific Quality of Life Index (Haemo-QoL) questionnaire was administered to the pediatric patients aged 4 to 16 years and Haem-A-QoL to the adult patients. Joints were evaluated according to the World Federation of Hemophilia (WFH) orthopedic joint scores.Thirty-nine children/adolescents and 31 adult patients were enrolled. Mean Haemo-QoL scores were 39.6 ± 15.0 for the children and mean Haem-A-QoL 47.4 ± 14.1 for the adult patients, respectively. Internal consistency reliability was generally sufficient. Total Cronbach's alpha coefficient was >.70 (range .77–.96) in all the age groups. Mean total WFH orthopedic joint scores were 1.83 ± 2.7, 4.9 ± 4.96, and 6.94 ± 6.15 in 4–7, 8–12, and 13–16-year-old groups, respectively. They were more impaired in the adult patients (16.23 ±14.12). These results show that the Turkish version of the Haemo-QoL and Haem-A-QoL are reliable instruments to measure the quality of life in the pediatric and adult patients with severe hemophilia. When compared to the Haemo-QoL scores of an international multicenter West European study of children, quality of life in the Turkish patients were more impaired in the subscales of physical health, feeling, view, school and sport, and treatment as well as more impaired WFH joint scores. The authors recommend primary factor prophylaxis and encouraging the patients to learn home treatment to improve joint scores and quality of life.