Cronbach's Alpha Research Articles

The utility and reliability of the PreViAs questionnaire forthe assessment of vision in Turkish neonates and infants.

Introduction: Evaluating the visual functions of children with an easy-to-use and evidence-based method during the preverbal period will enable early diagnosis and intervention of visual impairments. The aim of this study is to determine the utility and reliability of the Turkish version of the Preverbal Visual Assessment (PreViAs) questionnaire, which was developed to evaluate the visual functioning of preverbal infants. Population and Methods: The PreViAs questionnaire was administered to primary caregivers of term infants under 24 months of age, and their responses were recorded. Results: Data from the 278 participating infants were analyzed to assess the internal consistency of the PreViAs questionnaire. Results showed a high level of consistency with Cronbach's alpha value of 0.958 for the total score, suggesting strong internal coherence. In addition, the Cronbach's alpha values for each domain were 0.890, 0.913, 0.951, and 0.922 for visual attention, visual communication, visual processing, and visual-motor coordination, respectively, indicating good internal consistency for each subdomain. Conclusion: The Turkish version of the PreViAs questionnaire is useful and reliable for assessing functional vision during the preverbal period.

Perceived Injustice and Anger in Fibromyalgia With and Without Comorbid Mental Health Conditions: A Hebrew Validation of the Injustice Experience Questionnaire.

Perceived injustice (PI), assessed by the Injustice Experience Questionnaire (IEQ), is an important trigger of anger. Both PI and anger are associated with adverse chronic pain outcomes, and with comorbid mental health severity. We aimed examined the roles of PI and anger in mediating pain across Fibromyalgia patients, with and without comorbid anxiety/depression (FM+A/D, FM-A/D, respectively), as well as rheumatoid arthritis (RA), and pain-free controls (PFC). We hypothesized the highest levels of PI, anger, and pain in FM+A/D patients, followed by FM-A/D, RA, and PFC, thus also validating a Hebrew version of the IEQ. We translated the IEQ using the forward-backward method and collected data online. Based on self-reported anxiety/depression, the sample comprised 66 FM+A/D patients, 64 FM-A/D, 34 RA, and 32 PFCs. Assessments included the IEQ, state and trait anger, pain intensity, anxiety, depression, and pain catastrophizing. The structure and reliability of the Hebrew IEQ were examined using factor analysis and Cronbach alpha. Bootstrapped-based modeling was used to test the roles of state and trait anger in mediating and moderating the relationship between PI and pain intensity. We confirmed a one-factor structure of the IEQ, with excellent reliability. FM+A/D patients demonstrated the highest scores in all measures. Within this group, trait anger moderated the mediating effect of state anger in the relationship between PI and pain intensity. Our findings validate a Hebrew IEQ and highlight the importance of PI and state and trait anger in the differential manifestation of mental health comorbidity in FM.

Development and validation of a novel Barrett's oesophagus patient reported outcome measure (B-PROM)

Patients with Barrett's oesophagus (BO) carry significant cancer worry, burden of symptoms, and lack disease-specific knowledge. Currently there is no validated BO patient reported outcome measure (PROM) to measure these factors for use in clinical practice and research, hence the aim of this study was to devise a novel, validated BO-specific tool, B-PROM. Literature review, quantitative and qualitative research informed the initial item generation. The item bank was refined through a modified Delphi process between May and August 2021. The PROM was then tested through cognitive interviews and validated via multicentre testing between September 2021 and February 2023 with the aim to create a succinct tool which addresses the key important factors to BO patients and has strong psychometric properties. B-PROM covers key themes of disease-specific knowledge, trust in clinicians, burden of symptoms, cancer worry and burden of surveillance. Validation results from 387 participants (response rate 40.8%) showed 93.3% of participants completed >95% of B-PROM. All individual items scored a completion rate of >95%. Mean completion time was 5mins 34s for a sample group. Nineteen items showed a ceiling effect, 3 items showed a floor effect. Internal consistency overall demonstrated a Cronbach Alpha of 0.846, while predetermined subsections showed Cronbach alphas of 0.335, 0.718, 0.736, and 0.896. Inter-item analysis found 2 pairs of items with strong correlation, with only 6 items correlating weakly. Item-total correlation showed 19 items correlated well. Exploratory Factor analysis (EFA) with principal component analysis produced 5 components with Eigenvalues >1 of which 4/5 had satisfactory Cronbach alphas. Test-retest reliability showed no significant differences across single and average measures (p ≤ 0.001). B-PROM is the first BO-specific PROM to be systematically evaluated. Validation findings show strong internal consistency, short completion time, low missingness and excellent test-retest reliability. Medtronic Limited ISR-2016-1077.

Identification of Construction Project Risks in the Indian Context: A Case Study on Building Construction

Abstract: This paper presents a comprehensive investigation into the risk factors prevalent in building construction projects within the Indian context, focusing on their identification, ranking, and management strategies. Through data collected from 206 construction professionals via an online questionnaire, the study employs robust reliability analysis, yielding a high Cronbach's Alpha coefficient of 0.898, affirming the questionnaire's internal consistency and reliability. Utilizing the Relative Importance Index (RII) and Safety Risk Score (SRS), the research ranks critical risk factors, including poor stakeholder communication, inaccurate cost estimation, funding delays, and market demand fluctuations, underlining the necessity of addressing these challenges to mitigate potential impacts on project outcomes. The paper emphasizes the significance of proactive risk management strategies to ensure project success and resilience amidst evolving circumstances, providing valuable insights into construction project risks specific to the Indian landscape and offering recommendations for enhancing risk management practices in the field.

Initial Development and Validation of a Questionnaire for Students’ Artificial Intelligence Knowledge in Education

This research investigates students' knowledge in the use of Artificial Intelligence (AI) in education through the administration of a formulated questionnaire. Drawing upon insights from thematic analysis of qualitative responses and computation of Cronbach's alpha coefficients, the study aims to produce a tool to assess tertiary level students' understanding regarding AI integration in academic settings. Results reveal varying degrees of awareness, knowledge, and confidence among students, highlighting thematic areas such as perceived benefits, ethical considerations, and disciplinary perspectives. While the questionnaire demonstrates validity, reliability, and scalability as a measurement tool, limitations including response bias and generalizability are acknowledged. Implications for educational practice and research are discussed, emphasizing the utility of the questionnaire in informing curriculum development, professional development initiatives, policy decisions, and future research directions. Overall, this research provides valuable insights into students' perspectives on AI in education, offering a foundation for enhancing AI literacy, fostering ethical awareness, and shaping the future of AI integration in educational settings.

Validation and adaptation to Spanish of the quality-of-life questionnaire in patients with hemorrhoidal disease and anal fissure (HEMO-FISS-CdV).

Haemorrhoidal disease and anal fissure are the two most frequent entities within benign anal pathology, both of which have a negative impact on patients' quality of life. To date, there is no specific questionnaire in Spanish to assess the impact on quality of life in patients suffering from these conditions. The aim of our study is to validate in Spanish a questionnaire for this purpose, adapting it to our daily clinical practice. The HEMO-FISS-CdV is the Spanish version of the original HEMO-FISS-QoL by Abramowitz. The questionnaire consists of 23 items organised in 4 dimensions (physical, psychological, defecation and sexuality). The reliability of the new tool was assessed by determining internal consistency using Cronbach's alpha and Guttman's coefficient. It was also correlated with the quality of life questionnaire SF12 version 2. The Cronbach's alpha obtained for our questionnaire (HEMO-FISS-CdV) was 0.951 (ICC 95% +-0.016), with a range between 0.935 and 0.967. The Guttman two-half coefficient had a value of 0.910. Patients with internal haemorrhoids, anal fissure or both had higher values on the HEMO-FISS-CdV questionnaire than patients without internal haemorrhoids and these differences were significant (p<0.05). Both diseases have a negative impact on patients' quality of life. The HEMO-FISS-CdV questionnaire provides a tool in Spanish that easily and specifically assesses the impact of haemorrhoidal disease and anal fissure on quality of life.

The response readiness tool: An instrument to measure knowledge, skills, and attitude after taking a stop the Bleed® course.

Stop the Bleed® is an emergency response course that offers a certificate of completion but no ending assessment. The purpose of this educational study was to develop and test the Response Readiness Tool (RRT) that measures learning of participants after taking Stop the Bleed®. The study used a pre-/post-test design to measure knowledge and attitudes, and a post-test only for skills. Participants were recruited from existing Stop the Bleed® courses. Knowledge was measured with a 10-item questionnaire, attitude was measured with five Likert-style questions, and skills were measured by observing simulated tourniquet placement. Ninety-five participants were recruited over two semesters. There was a significant difference in the knowledge and attitude scores indicating participants' improvement in learning and attitude toward responding. Internal consistency reliability of scores showed moderate reliability with Cronbach's Alpha of 0.73 and McDonald's Omega of 0.75. A positive correlation was found between expected proficiency and pre-test indicating the tool had construct validity. RRT provides Stop the Bleed® instructors with an instrument to measure knowledge, skills, and attitude of participants after taking Stop the Bleed®. Statistics show moderate reliability and validity; however, larger samples are needed for full psychometric testing. This publication presents the revised tool after the completion of this study.

Psychometric properties of the Spanish version of the measure of insight into cognition-self-report in psychosis-risk and non-clinical Mexican young adults.

Cognitive disturbances typically precede the onset of overt psychotic symptoms and represent a neurobiological marker for psychosis risk that is also associated with poor functional outcomes. The Measure of Insight into Cognition-Self Report (MIC-SR) is a widely used 12-item questionnaire that assesses the perceived frequency of cognitive impairment in the domains of executing functioning, attention, and memory. However, the MIC-SR is not available in Spanish, one of the most widely spoken languages worldwide. The present study aimed to provide a Spanish version of the MIC-SR and examine its psychometric properties in psychosis-risk and non-clinical Mexican young adults. The sample comprised 621 participants who completed a battery of self-report measures via an online survey. Of the participants, 478 were non-clinical, and 143 met the screening criteria for a clinical high-risk for psychosis (CHR-positive). Confirmatory Factor Analyses supported a one-factor model, consistent with the findings for the original MIC-SR. The results showed adequate fit indices for the general model and the independent models for both groups, with high Cronbach's alpha coefficients. Furthermore, the CHR-positive group showed more frequent subjective cognitive problems on each of the 12 items, higher total scores, and higher average frequency than the non-clinical group. To our knowledge, this is the first translation of the MIC-SR into Spanish. Using the MIC-SR at the CHR stage may contribute to our understanding of cognitive processes associated with the onset of a psychotic disorder and provide valuable information in the context of detection and early intervention efforts.

Sustainable Employability of People with Limited Capability for Work: The Participatory Development and Validation of a Questionnaire.

Understanding sustainable employability (SE) of people with limited capability for work (LCW) due to physical or mental disability is crucial for the sustainable participation of this target group. Therefore, adequate measurement instruments for SE are needed. This study aims to validate a questionnaire to measure SE among people with LCW using a participatory approach, including person-job fit (PJ fit) and work-related sense of coherence (Work-SoC). Existing scales for the main concepts were tested and adapted for face validity via cognitive interviews (n = 6), with the involvement of a co-researcher with LCW in the research team. Next, the questionnaire was administered among people with LCW (n = 248) to assess its factor structure (Confirmatory Factor Analysis) and reliability (Cronbach's alpha). Analysis of the cognitive interviews identified problems with clarity and readability of items, instructions and response categories of used (existing) scales. The main adjustments concerned the shortening of text length, the usage of familiar language and examples, and the addition of an introduction game. Most of the adapted SE indicator scales showed an overall good fit and acceptable-to-good internal reliability. The overall SE model had an overall good fit, and excluding 'internal employability' further improved this fit. PJ fit and Work-SoC had an acceptable/good model fit and internal consistency. The participatory validation process resulted in a validated and comprehensive questionnaire to measure SE, PJ fit and Work-SoC among people with LCW, which enables research into the development of their SE. This questionnaire can be utilised to contribute to a more inclusive labour market.

Work environment as predictors of perceived organisational performance of private university libraries in South-west, Nigeria

The library is the major source of information provider in the university community, which makes it a storehouse of information for intellectual development for staff and students. The effective and efficient performance of any private university library personnel will greatly depend on the work environment of the private university library which can be conducive or unconducive for them to perform their task. To this effect, this study investigated the influence of the work environment on organisational performance of private university libraries in South-west, Nigeria. Two research questions were answered while one hypothesis was tested at 0.05 alpha level. The study adopted survey research design of the correlational type with the study population of 430 librarians from 30 private universities established as at 2021, in the six states of South-west, Nigeria. The study used total enumeration method to cover all the professional and para-professional library personnel. A validated questionnaire was used for data collection. The Cronbach alpha was used to compute the reliability coefficient of the instruments as follows: Work environment (0.730) and organisational performance (0.885). Sample of 378 questionnaires were retrieved and used for data analysis using descriptive statistics, while inferential statistics was used for data analysis. Findings revealed that the state of work environment of private university libraries in the south-west is conducive. Result from the finding indicated that there is large organisational performance in the private university libraries, the result also revealed that there is a significant relationship between work environment and organisational performance of private university libraries in South-West, Nigeria (r=.513, n=378, p (.000)&lt;.05) and Psychological work environment (r=.449, p(.000)&lt;.05), has the highest influence. Hence, work environment influenced/enhanced organisational performance of private university libraries in the study.

The Effect of Service Quality, Insurance Costs, and Installment Size on Customer Satisfaction Multi-Purpose Financing: Case Study at Bank Sumut Syariah Padangsidimpuan

This research aims to analyze the influence of service quality on customer satisfaction, the influence of insurance costs on customer satisfaction and the size of installments on customer satisfaction for multi-purpose financing at the Sumut Syariah Bank, Padangsidimpuan Branch. This research uses primary data by distributing questionnaires to multi-purpose financing customers. The population of this research is all multi-purpose financing customers with a total of 862 people. The sample used in this research was 90 respondents. The validity test uses the Pearson Product Moment correlation test, while the reliability test uses Cronbach alpha. Classic assumption tests include normality tests, multicollinearity tests, heteroscedasticity tests and autocorrelation tests. Hypothesis testing in this study used multiple linear regression analysis. The research results state that service quality and insurance costs partially have a positive and significant effect on customer satisfaction. This means that the higher the quality of service provided will increase customer satisfaction, and the suitability of the insurance costs provided with the benefits obtained by the customer will provide a level of customer satisfaction. Meanwhile, the installment amount does not have a significant effect on customer satisfaction, this is because previously the installment amount had been analyzed using scoring analysis which had an influence on the installment amount.

Development of a reliable surgical quality assurance tool for gastrectomy in oncological trials.

Despite its recognized importance, there is currently no reliable tool for surgical quality assurance (SQA) of gastrectomy in surgical oncology. The aim of this study was to develop an SQA tool for gastrectomy and to apply this tool within the ADDICT Trial in order to assess the extent and completeness of lymphadenectomy. The operative steps for D1+ and D2 gastrectomy have been previously described in the literature and ADDICT trial manual. Two researchers also performed fieldwork in the UK and Japan to document key operative steps through photographs and semi-structured interviews with expert surgeons. This provided the steps that were used as the framework for the SQA tool. Sixty-two photographic cases from the ADDICT Trial were rated by three independent surgeons. Generalizability (G) theory determined inter-rater reliability. D-studies examined the effect of varying the number of assessors and photographic series they rated. Chi-square assessed intra-rater reliability, comparing how the individual assessor's responses corresponded to their global rating for extent of lymphadenectomy. The tool comprised 20 items, including 19 anatomical landmarks and a global rating score. Overall reliability had G-coefficient of 0.557. Internal consistency was measured with a Cronbach's alpha score of 0.869 and Chi-square confirmed intra-rater reliability for each assessor as < 0.05. A photographic surgical quality assurance tool is presented for gastrectomy. Using this tool, the assessor can reliably determine not only the quality but also the extent of the lymphadenectomy performed based on remaining anatomy rather than the excised specimen.

Reliability and validity analysis of Turkish version of the Symptoms of Lower Urinary Tract Dysfunction Research Network Symptom Index-10 (LURN SI-10) questionnaire.

To evaluate the validity and reliability of the Turkish version of the Symptoms of Lower Urinary Tract Dysfunction Research Network Symptom Index-10 (LURN SI-10). In this, single-centre study, patients between 18 and 65 years old, who were suffering from lower urinary tract symptoms (LUTS) without any known urinary tract disease and on no medication, were enrolled. The control group consisted of participants, who were admitted to our clinic suffering from any complaint except LUTS and met all of the other inclusion and exclusion criteria. Participants' demographics such as age, sex, and level of education were recorded. The Turkish version of the LURN SI-10, International Prostate Symptom Score (IPSS) and Overactive Bladder Questionnaire (OAB-V8) were administered to all participants. Construct validity was evaluated by confirmatory factor analysis and concurrent validity was evaluated with correlations to similar measures. Internal consistency (Cronbach's alpha) was used to establish the scale's internal consistency reliability. A total of 164 participants were included in the final analysis. Of those, 57% were male. The individuals were identified as being in the "patient group" (n = 86) and a "control group" (n = 78). The mean age was 48.24 ± 14.30 years. The median total LURN SI-10 scores of patient group and control group were 12.0 (9-18.25) and 4.0 (2.75-6), respectively. The LURN SI-10 questionnaire showed a high correlation with the IPSS and the OAB-V8 questionnaires (r: 0.761; p: 0.001; r: 0.737; p: 0.001, respectively) in concurrent validity analysis. Cronbach's alpha coefficient of the LURN SI-10 was 0.850. This promising measurement tool can be used to evaluate LUTS in Turkish women and men. Further studies should be conducted to assess the clinical usefulness of this questionnaire.

Body Adiposity Index (BAI) as a predictor of body fat in an oldest old and independent Brazilian elderly cohort.

Anthropometry and body mass index (BMI) do not assess body composition or its distribution in older adults; thus, individuals may have different fat percentages but similar BMI values. The body adiposity index (BAI) was recently proposed as a feasible and inexpensive method for estimating the percentage of body fat based on measurements of hip circumference and height. Objectives: The present study evaluated whether BAI and BMI are useful alternatives to dual-energy X-ray absorptiometry (DXA), which is rarely used in clinical practice, for predicting body fat in independent long-lived older adults. In this cross-sectional study, we used DXA to calculate the percentage of body fat, which was compared with BAI and BMI values. We performed Pearson correlation analyses and used Cronbach's alpha, described by Bland and Altman, to compare the reliability between the indexes. Among 157 evaluated individuals (73.2% women, mean age 87 years, ± 3.57), men had a lower percentage of total fat, as assessed by DXA, and lower BAI indices than women. The correlation between BAI and DXA was moderate (r = 0.59 for men and r = 0.67 for women, p < 0.001). We confirmed the reliability based on Cronbach's alpha coefficients of 0.67 in men and 0.77 in women. We also observed that the BAI was strongly positively correlated with BMI in both men and women. The BAI, used in combination with BMI, can be an alternative to DXA for the assessment of body fat in the oldest old in clinical practice, mainly women, and can be used to add information to BMI.

Adaptation into Spanish and reliability analysis of the Microscale Audit of Pedestrian Streetscapes mini (Maps-mini-Es)

IntroductionIn recent times, we have witnessed an increase in population growth and a tendency to live in urban environments. Walkability is an indicator based on characteristics of the physical environment to determine the association between environmental conditions and health behaviours. It would therefore appear that assessing walkability can contribute to establishing strategies for improving healthy behaviours and population health. In this study, our aim was to adapt and assess the metric properties of the Spanish version of MAPS-Mini for assessing walkability. MethodsFirstly, the adaptation and translation process was carried out. Subsequently, to assess the reliability of the Spanish version of MAPS-Mini, two raters (E1 and E2) used it independently at street level for 93 segments selected by convenience. Four weeks later, E1 re-evaluated 50 sections randomly selected from the 93 evaluated segments (re-evaluation). Inter-observer reliability and temporal stability were assessed. ResultsNo major differences were observed between the original and the Spanish version of MAPS-mini. The average ratings observed by E1 and E2 were 42.2 (SD = 11.5) and 46.5 (SD = 13.1), respectively. The average rating observed in the re-evaluation was 43.4 (SD = 14.2). Cronbach's Alpha showed a rating of 0.972 and the correlation of ratings between E1 and E2, and E1 and the re-evaluation, were higher than 0.9. ConclusionThe Spanish version of MAPS-mini has adequate metric properties for assessing the walkability of urban environments using measurements at street level.

Translation, adaptation, and validation of a Chinese version of the Hypertension Self-Care Activity Level effects (H-SCALE) for patients with hypertension.

Lifestyle modification is an essential component of prevention and management of hypertension. Existing instruments in Taiwan focus on assessing lifestyle modifications by evaluating medication adherence or confidence in controlling blood pressure. However, other self-care activities, such as diet, physical activity, weight management, smoking, and alcohol consumption are also important. The Hypertension Self-Care Activity Level Effects (H-SCALE) is one such instrument, but there are no similar tools available in Taiwan. This study aimed to translate the H-SCALE into Chinese and test its validity, and reliability in a sample of adults with hypertension. The English version of the 31-item H-SCALE was translated into Chinese using the forward-backward method. The content validity index (CVI) of the translated scale was determined by five experts in hypertension. Item analysis was conducted with a pilot sample of 20 patients with hypertension. Cronbach's α was used to establish the internal consistency reliability for the Chinese version of the H-SCALE (H-SCALE-C). Exploratory factor analysis (EFA) explored the structure of the H-SCALE-C. Additionally, construct validity was examined with confirmatory factor analysis (CFA). Patients with hypertension were recruited by convenience sampling from a cardiovascular outpatient clinic of a medical center in northern Taiwan. A total of 318 patients met the inclusion criteria and participated in factor analysis in the study. Pilot testing of the scale items indicated most patients could not accurately estimate the number of days of alcohol consumption for the previous week. Therefore, three alcohol-related items were removed. The adaptation resulted in a 28-item H-SCALE-C. EFA revealed a 4-factor solution with 13 items that explained 63.93% of the total variance. CFA indicated a good fit for a 4-factor model and construct validity was acceptable. Internal consistency reliability was acceptable (Cronbach's alpha for the four subscales ranged from 0.65 to 0.94). Convergent validity was acceptable, and discriminant validity was significant. The H-SCALE-C is a valid, reliable tool for promptly assessing life-style activities for patients with hypertension in Taiwan. The instrument is suitable for assisting healthcare providers in evaluating self-care activities, which could be used to facilitate lifestyle modifications for patients with hypertension.

The Factors of Religious Architecture Influencing Students' Perception of Beauty and Art: Evidence from Hanoi, Vietnam

This study explores the impact of religious architecture on the aesthetic perceptions of elementary school students in Hanoi, Vietnam, focusing on students majoring in fine arts. Employing regression analysis, the research assesses the influence of six key dimensions: architectural design and details, cultural and historical context, spiritual symbolism, emotional impact, context and setting, and students' perceptions of beauty and art. Data were collected through a structured questionnaire developed from a thorough literature review and expert consultations and administered to a randomly selected sample during Vietnam's Lunar New Year in January 2024. The results revealed that each dimension significantly contributes to students' perceptions of beauty, with context and setting having the most pronounced effect. The reliability of the questionnaire was confirmed via Cronbach's alpha, indicating high internal consistency across all scales. The regression analysis validated the theoretical framework, establishing that religious buildings' architectural and contextual elements significantly shape students' aesthetic judgments. These findings underscore the importance of integrating architectural aesthetics into educational curricula, highlighting how environmental and cultural contexts influence educational outcomes in art and aesthetics. This research contributes to filling a significant gap in understanding the academic impact of cultural heritage, offering significant implications for educational practices and policies in culturally diverse settings.

Development of a distance education attitude scale for lifelong learning (DEAS-LLL): a validity and reliability study

ABSTRACT In recent times, the utilization of distance education (DE) has witnessed a notable surge across various sectors, particularly amidst the backdrop of pandemics. This study aimed to develop a comprehensive Distance Education Attitude Scale tailored for Lifelong Learning (LLL) contexts. Methodologically, the research enlisted the participation of 260 physicians, employing a five-point Likert scale design. The content validity index yielded an impressive score of 0.92. Following a rigorous 48-item pilot application among 30 physicians, a refined 37-item draft scale emerged. Through explanatory factor analysis, the scale revealed a robust 4-factor structure comprising 22 items. Model fit indices, gauged through confirmatory factor analysis, underscored the scale's coherence and alignment. In the test-retest phase, an analysis utilizing Pearson Correlation Coefficient yielded a robust correlation coefficient of r = 0.891, signifying high stability over time. Moreover, a paired-sample t-test revealed non-significant differences (t = −0.041, p:0.968), further affirming the scale's reliability. With a commendable Cronbach's alpha value of 0.946, the finalized “Distance Education Attitude Scale in Lifelong Learning” stands as a validated and highly reliable instrument, particularly among physicians. Its applicability extends to academic inquiries regarding distance education and holds promise for validation across diverse adult learning cohorts.

Information Systems and Operational Efficiency of Maritime Firms in Port Harcourt

The study examined the relationship between information systems and operational efficiency of maritime firms’ in Port Harcourt, Rivers State. Three research questions and three research hypotheses were formulated to address the specific objectives of this study. The RBV theory was adopted in this study and also quantitative research design using a correlational method of investigation. The population consists of 16 maritime firms in Port Harcourt. Census sampling was applied with focus on managers. Four managers per firm were sampled; a total of 64 managers were sampled. The reliability of the instrument was determined using Cronbach alpha test and it stood at 0.88 higher than the benchmark of 0.7. The data collected for this study were analyzed through descriptive and inferential statistics. The Spearman Rank-Order Correlation Technique was employed to test the various hypotheses formulated. The result of the analysis revealed that the information system is significantly and positively related to the operational efficiency of maritime firms’ in Port Harcourt, Rivers State. The empirical results of this study confirmed this as a positive and significant relationship was found between processing transaction systems and operational efficiency of maritime firms, and between electronic data interchange and operational efficiency of maritime firms. Based on these findings, it was concluded that the information system with its dimension of processing transaction system and electronic data interchange will improve operational efficiency of maritime firms in Port Harcourt. This study recommends that maritime firms should leverage on information systems as this would ensure reduction in cost and improve operational efficiency; they should use processing transaction system in order to facilitate the recording, tracking, and management of business transactions within the organization and the port, and they should adopt electronic data interchange for processing of documents and timely delivery of same.

Analisis Butir Soal Ulangan Harian Siswa Mata Pelajaran PPKn Kelas IV Menggunakan Rach Model di Madrasah Ibtidaiyah Negeri

The study aimed to analyze the items on students' daily test questions on PPKN subjects made by the teacher to measure learning outcomes during the previous lesson process. Conducted on fourth-grade students at the 01 West Pasaman State Madrasah Ibtidayah. The method used in this research is descriptive quantitative using Rasch model data analysis with Win Step software. The results of the data analysis carried out were on the reliability data analysis using Winstep Cronbach Alpha 0.49 software. From the existing data, it is clear that the level of reliability of the questions is still relatively weak. The results of the Rasch model of person reliability and item reliability are 0.47 and 0.52. The results of the analysis of the quality of the items in terms of the validity of the items using the Rasch model obtained 6 questions that were said to be valid and 24 questions that were said to be invalid because they did not meet the requirements for the MNSQ outfit, ZSTD outfit, and the Point Measure correlation (PT measure Corr). In using the Rasch model it is felt to be more accurate because it meets these three criteria, so it is considered valid. above the P value or the level of difficulty of the items below 0.25, there are 3 items, meaning the item is very difficult. Questions that are above 0.75 have 5 items meaning the question is too easy. And questions that are scored between 0.25-0.75 have 17 questions. That is, 18 questions have a good level of difficulty. Analysis of distracting items using the Winstep Rasch Model software for 25 daily test questions for students of Civics class IV at Madrasah Ibtidayah Negeri 01 Pasaman Barat shows that there are 23 questions with good functioning distractors. Items where the distractor does not function properly are 5 questions.