• Journal of Yeungnam Medical Science
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• v.12 no.2
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• pp.292-305
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• 1995

This study was carried out to develop a Korean language version of Zung's self-rating depression scale (SDS). The subjects consisted of 173 males and 161 females drawn from various groups of the general population by a cluster of sampling methods. In order to analyze the data on depression scores, Pearson's product moment correlation coefficient method was carried out, as well as reliability and factor analysis, by the SPSS/PC+ program. The results obtained were as follows: The mean average of the total depression scores were $40.60{\pm}8.66$ for the subjects. Thirty-seven subjects (11.1%) showed high depression scores of 50 or over. Test-retest reliability(coefficient r=0.82, p <0.001), internal consistency(coefficient r=0.84, p <0.001) were satisfactory. Factor analysis using oblique technique rotation yielded five factors. The items of confusion, indecisiveness, decreased libido, diurnal variation, and psychomotor retardation were scored higher by the subjects. The items of suicidal rumination, psychomotor agitation, constipation, irritability, and weight loss were scored lower.

• Journal of Convergence for Information Technology
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• v.11 no.12
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• pp.148-157
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• 2021

This research aims to adapt and evaluate the validity and reliability of the Korean version of the Interdisciplinary Education Perception Scale (K-IEPS). The original IEPS was translated into Korean according to the World Health Organization's guidelines. A total of 302 questionnaires were collected from healthcare professional students at 4 universities in South Korea. The validity and reliability of the scale were measured using Exploratory Factor Analysis (EFA), Confirmatory Factor Analysis (CFA), Cronbach's alpha, and Intraclass Correlation Coefficient (ICC). As a result of the factor analysis, a ten-item scale with two factors (Competency & Autonomy and Perception of Actual Cooperation) was achieved. Additionally, the Cronbach's alpha coefficient was found to be .87, and test-retest reliability was .83. Our study results show that the Korean version of the IEPS is a valid and reliable instrument. Therefore, the K-IEPS can be used in measuring interdisciplinary perceptions of healthcare professional students between different occupational groups.

• The Journal of the Korea Contents Association
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• v.18 no.12
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• pp.25-34
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• 2018

With the higher competition of university environment, universities has been adapted Customer Satisfaction Index (CSI). However, the problem of CSI focuses on score and ranking announcement. In public sectors, PCSI model is used because of increasing its strategic utilization by providing diagnosis of the phenomenon and direction for future improvement through causal model analysis. The purpose of this research is to develop a measurements of university satisfaction using PCSI. This research demonstrates validity and reliability of PCSI using test-retest method using multi-group confirmatory factor analysis. The results of this research indicate that the reliability and validity of the PCSI model is verified. Service product quality, service delivery quality, environment quality and social quality have positive effects on customer satisfaction. In turn, customer satisfaction have positve effects on university performance and social performance. In conclusion, service quality, PCSI, and service performance are clarified to be appropriate components of the satisfaction survey. These results can be used to measure the satisfaction level of education at actual universities. It is expected that practical basic data can be obtained to improve the quality of university education.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.2
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• pp.605-621
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• 2019

The purpose of this study was to develop and validate the Korean version of the Classism Attitude Scale for college students (K-CAS) that measures stereotypes and prejudices about socioeconomic class(SES). In study 1, preliminary items were developed through reviewing classism related theories and literatures, analyzing qualitative data by using Consensus Qualitative Method-modified(CQR-M) and getting experts' consultation. With 440 college students data, exploratory factor analysis and reliability analysis were conducted with 14 items in study 1. In study 2, a confirmatory factor analysis and validity analysis were conducted with 400 college students. As a result, two factor structures, upper classism attitude and downward classism attitude, were confirmed. With the higher level of test-retest reliability, the criterion validity was confirmed by the significant correlations among age, subjective SES, the general belief in a just world, negative affects (depression and anxiety), hostility, and K-CAS. The incremental validity was also confirmed that K-CAS scores significantly accounted for 5% of total variation in scores of negative affects(depression and anxiety) in addition to the variables, such as age, subjective SES, house income, and the general belief in the just world. The result of this study is significant in that the developed and validated K-CAS in this study can be a useful tool for further research and prevention and intervention program development related to classism.

• The Journal of Internal Korean Medicine
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• v.41 no.6
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• pp.1052-1065
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• 2020

Objectives: To evaluate the reliability of a pattern identification tool for benign prostatic hyperplasia and to examine the relationship between pattern identification tool readings and IPSS and uroflowmetry. Methods: We analyzed 56 patients diagnosed with benign prostatic hyperplasia from December 27th, 2017 to December 26th, 2018 by two different Korean medical doctors and followed with a pattern identification tool and by IPSS and uroflowmetry. One week later, the patients were retested to analyze the reliability of the pattern identification tool, determined with the intraclass correlation coefficient (ICC) using the test-retest method. The correlation between IPSS and uroflowmetry was analyzed with the Pearson coefficient. Result: The reliability of the pattern identification tool for benign prostatic hyperplasia was evaluated as "poor agreement beyond chance" (ICC=0.349). The reliability of each pattern identification score was evaluated as "good" for Yang Deficiency of Kidney, Yin Deficiency of Kidney, Deficiency of Middle Qi, and Dampness-heat of Lower Energizer. The internal consistency was evaluated as "good" for Yang Deficiency of Kidney, Yin Deficiency of Kidney, and Dampness-heat of Lower Energizer, and as "excellent" for Deficiency of Middle Qi. The correlation between pattern identification and IPSS was evaluated as a "moderate positive correlation" for all pattern identifications. The average flow rate and maximum flow rate using uroflowmetry was evaluated with "moderate negative correlation" for Yang Deficiency of Kidney and Dampness-heat of Lower Energizer. Conclusion: The reliability of a pattern identification tool for benign prostatic hyperplasia was evaluated as "poor agreement beyond chance." Further research is needed.

• Korean Journal of School Psychology
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• v.17 no.3
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• pp.357-377
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• 2020

This study was intended to develop and investigate reliability and validity of a scale that can measure linkage capability of community resources of counselors. This study prepared a preliminary question consisting of a total of 42 questions in 5 areas. Then, the content validity and facial validity were verified by the counseling experts with a first-degree qualification as a counselor in Korean Counselling Psychological Association, and a total of 20 final questions of 4 areas. The final questions were conducted on psychological counselors(N=306) to investigate reliability and validity. As a result of conducting an exploratory factor analysis, validity of the two-factor structure have been verified. And In the confirmatory factor analysis, two factors were shown to be appropriate. The two-factors were named 'The collection and utilization of information' and 'Association with the Organization of Information'. Also, the scale of final selection of questions were found to have a good degree of concurrent validity, interitem consistency and test-retest reliability. The implications of the present study is significant in that it is a measure of community resources linkage capability scale of counselors. In addition, this scale is expected to be useful in Wee Class, Wee Center, Youth Counseling Welfare Center, and other counseling sites.

• The Journal of the Acoustical Society of Korea
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• v.41 no.1
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• pp.76-86
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• 2022

Personal hearing devices, such as hearing aids, may be fine-tuned by allowing the users to conduct self-adjustment. Two self-adjustment procedures were developed to collect the listener preferred gains in six octave-frequency bands from 0.25 kHz to 8 kHz. These procedures were designed to allow rapid exploration of a multi-dimensional parameter space using a simple, one-dimensional user control interface (i.e., a programmable knob). The two procedures differ in whether the user interface controls the gains in all frequency bands simultaneously (Procedure A) or only the gain in one frequency band (Procedure B) on a given trial. Monte-Carlo simulations suggested that for both procedures the gain preference identified by simulated listeners rapidly converged to the ground-truth preferred gain profile over the first 20 trials. Initial behavioral evaluations of the self-adjustment procedures, in terms of test-retest reliability, were conducted using 20 young, normal-hearing listeners. Each estimate of the preferred gain profile took less than 20 minutes. The deviation between two separate estimates of the preferred gain profile, conducted at least a week apart, was about 10 dB ~ 15 dB.

• Korean Journal of Health Psychology
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• v.19 no.3
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• pp.711-727
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• 2014

The purpose of this study was to develop and standardize the Korean version of the Parent Mealtime Action Scale(K-PMAS). The parents of typically developing preschool and elementary school children (N=887) ranging in age from 1 to 11 years as well as parents of children with developmental disorders (N=116) completed the PMAS. A subset of the participants were retested for reliability and also completed the Children's Eating Behavior Inventory- Korean Version (K-CEBI), which was used for assessing validity. The confirmatory factor analysis revealed that the theoretically-based 8-factor structure of PMAS fit the data well. The PMAS scores suggested acceptable levels of internal consistency and test-retest reliability. Validity was also supported by significant correlations between the K-CEBI scores and the differences in K-PMAS scores between the parents of children with developmental disorders and those of typically developing children. The results of one-way ANOVA showed no significant differences in K-PMAS scores between the genders. However, there were significant differences across ages. The means and standard deviations of the PMAS scale scores are provided. Clinical and research implications as well as limitations are discussed.

• Korean Journal of Culture and Social Issue
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• v.24 no.3
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• pp.385-410
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• 2018

Materialistic values can be a important variable to understand Koreans' psychological well-being and mental health. This study aimed to validate the Korean version of the Material Values Scale (K-MVS)(Richins & Dawson, 1992). In study 1, we performed confirmatory factor analysis(CFA) to ascertain the three factor model of the original MVS using 417 Korean undergraduate student data(sample 1). The CFA confirmed the three-factor model of the MVS. Yet, three items that yielded low factor loadings in this study as well as in other MVS validation studies were excluded from the final model. In study 2, content, construct, and concurrent validity of the K-MVS were examined with 650 undergraduate student data(Sample 2). We also tested measurement invariance across two groups(i.e., college student group of Sample 2 and employee group of Sample 3). The result revealed that the three-factor model of the K-MVS hold true across the two groups. Lastly test-retest reliability was calculated with 408 female college student data(Sample 4) that filled out K-MVS twice within 6 months. These findings suggest that the K-MVS is a reliable and valid measure for assessing materialistic values in Korea.

• Korean Journal of Radiology
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• v.23 no.1
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• pp.77-88
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• 2022

Objective: Our study aimed to evaluate the quality of radiomics studies on brain metastases based on the radiomics quality score (RQS), Transparent Reporting of a multivariable prediction model for Individual Prognosis Or Diagnosis (TRIPOD) checklist, and the Image Biomarker Standardization Initiative (IBSI) guidelines. Materials and Methods: PubMed MEDLINE, and EMBASE were searched for articles on radiomics for evaluating brain metastases, published until February 2021. Of the 572 articles, 29 relevant original research articles were included and evaluated according to the RQS, TRIPOD checklist, and IBSI guidelines. Results: External validation was performed in only three studies (10.3%). The median RQS was 3.0 (range, -6 to 12), with a low basic adherence rate of 50.0%. The adherence rate was low in comparison to the "gold standard" (10.3%), stating the potential clinical utility (10.3%), performing the cut-off analysis (3.4%), reporting calibration statistics (6.9%), and providing open science and data (3.4%). None of the studies involved test-retest or phantom studies, prospective studies, or cost-effectiveness analyses. The overall rate of adherence to the TRIPOD checklist was 60.3% and low for reporting title (3.4%), blind assessment of outcome (0%), description of the handling of missing data (0%), and presentation of the full prediction model (0%). The majority of studies lacked pre-processing steps, with bias-field correction, isovoxel resampling, skull stripping, and gray-level discretization performed in only six (20.7%), nine (31.0%), four (3.8%), and four (13.8%) studies, respectively. Conclusion: The overall scientific and reporting quality of radiomics studies on brain metastases published during the study period was insufficient. Radiomics studies should adhere to the RQS, TRIPOD, and IBSI guidelines to facilitate the translation of radiomics into the clinical field.