• 한국전문물리치료학회지
• /
• 제30권1호
• /
• pp.32-40
• /
• 2023

Background: Equating is a statistical procedure used to create a common measurement scale across two instruments. Item-level information should be taken into consideration so that scores can communicate interchangeably across the instruments. Objects: To investigate a common measurement scale across two health-related quality of life questionnaires (HRQOL) applied to various cancer survivors who underwent palliative care in healthcare institutions. Methods: A total of 139 cancer survivors who underwent palliative care were recruited from two rehabilitation hospitals and an oriental medicine hospital. Participants consisted of various cancer survivors who presented to the sites for palliative care. They were asked to fill out Korean versions of the World Health Organization Quality of Life (WHOQOL-BREF) and EuroQOL-5 dimension (EQ-5D) questionnaires following the palliative care. For the item level comparison, the Rasch rating scale model was used to investigate how participants regarded individual test items of two instruments in relation to item difficulty calibrations. Results: All items except the three items fit the Rasch model. One item (anxiety/depression) of the EQ-5D and two items (dependence on medical aids and negative feelings) of the WHOQOL-BREF are misfit. The WHOQOL-BREF targets the survivors well, while the EQ-5D is able to target the survivors with lower HRQOL levels with some ceiling effects. By inspecting the item difficulty calibrations of the two instruments, five items of the WHOQOL-BREF are selected as common items in relation to the EQ-5D. These five items are considered compatible with each other. Differential item functioning (DIF) analysis reveals that the healthcare item of the WHOQOL-BREF vs the self-care item of the EQ-5D exhibits significant DIF. Conclusion: Findings suggest that one paired item should be taken into consideration when equating the WHOQOL-BREF and the EQ-5D applied to cancer survivors who underwent palliative care.

• 대한간호학회지
• /
• 제29권6호
• /
• pp.1365-1378
• /
• 1999

This study is a methodological research study to develop an instrument to measure in patients with cancer and to test the validity and reliability of the instrument. The research procedure was as follows : 1) The first step was to develop conceptual framework based on a comprehensive review of the literature and in-depth interviews with patients with cancer. This conceptual framework was organized in to three dimensions (the intrapersonal dimension, the significant-other and context related dimension, the transcendental dimension). Initially 59 items were adopted. 2) These items were analyzed through the index of content validity(CVI) and 53 items were selected which met more than 80% on the CVI. 3) The pretest was carried out with 87 patients with cancer. After the pretest results were analyzed by item analysis, 44 items were selected. A second test of content validity was conducted and 6 items were eliminated considering the 80% CVI. 4) To test for reliability and validity, data collection was done during the period from January 25, 1999, to February 26, 1999. The subjects for the test were 160 patients with cancer and 185 healthy persons. analysis, item analysis and multitrait-multimethod method to analyze validity. The findings are as follows : 1) The Cronbach's alpha coefficient for internal consistency was .92 for the total 38 items and .79, .82, .85, for the three dimensions in that order. 2) The item analysis was based on the corrected item to total correlation coefficient( .30 or more) and information about the alpha estimate if this item was dropped from the scale. 3) As a result of the initial factor analysis using principal component analysis and varimax rotation, one item was deleted because of factor complexity (indiscriminate factor loadings). In the secondary factor analysis, 7 factors with eigenvalue of more than 1.0 were extracted and these factors explained 56 percents of the total variance. The seven factors were labeled as 'family relationship', 'emotional condition', 'physical discomfort', 'meaning and goal of life', 'contextual stimuli', 'change of body image', 'guilt feelings'. 4) The convergence effect between this instrument and the life satisfaction scale was identified and there was significant positive correlation(r= .52, p= .00). The discriminant validity between this instrument and the depression scale(CES-D) was tested and there was significant negative correlation(r= -.50, p= .00). The instrument for accessing the suffering of patients with cancer developed in this study was identified as a tool with a high degree of reliability and validity. In this sense, this tool can be effectively utilized for assessment in caring for patients with cancer.

• 한국의류산업학회지
• /
• 제14권3호
• /
• pp.347-362
• /
• 2012

The analysis results of the characteristics of children's clothes for school girls from the 2006S/S-2010S/S collections reveal that the most frequent type of item composition was 2'PS & 3'PS. T-shirts were the popular kind of item for upper garments and pants for lower garments. The major silhouettes were H and A line. The predominant neckline was U, which was followed by camisole and V. The major collar styles were stand-up and flat. Chromatic colors were used more than achromatic ones and after white the most popular colors were blue, pink, red, black, navy, and green. The dominant color scheme was a two-color or three-color scheme. The percentage of solid and patterned material garments was the highest and the most popular pattern was flowers. The most popular style of garment had no decorative detail that was followed by one-item, two-item, and three-item decoration. The major kinds of decorative detail were frills, pleats, and prints.

• 한국전자거래학회:학술대회논문집
• /
• 한국전자거래학회 2005년도 종합학술대회
• /
• pp.147-153
• /
• 2005

최근 인터넷 쇼핑몰에서 상품을 구매하는 고객들에게 편의성과 효율성을 제공하기 위하여 구매자들의 선호도나 가격에 맞는 상품을 추천해 주는 연구들이 활발하게 진행되고 있지만추천된 상품들의 구매시점에 관한 연구는 찾아보기 어렵다. 이에 본 논문에서는 인터넷 쇼핑몰의 적극적인 마케팅 일환으로 판매가격의 흐름을 시계열 패턴으로 분석하여 상품의 구매시점 정보를 제공하는 방안을 제안한다. 이를 위하여 과거의 판매 기록 데이터베이스에 있는 판매가격의 기준이 되는 패턴과 유사한 변화를 보이는 패턴을 정규화된 유사도로써 검색하고, 검색된 가격 패턴을 기준으로 미래의 가격 패턴의 변화를 분석하여, 미래 가격 패턴의 변화 폭에 따라 상품에 대한 구매시점을 제공한다.

• 한국보육지원학회지
• /
• 제19권6호
• /
• pp.39-54
• /
• 2023

Objective: This study aimed to develop a parent play interaction observation scale (PPIOS-Toddler) and analyze it in terms of item discrimination, reliability, and validity. Methods: The subjects of the study were 97 toddlers and mothers. This scale consisted of three categories, six domains and 22 items on a 5-point scale. For the item discrimination of the observation scale, an independent standard t-test was conducted to analyze the significant difference in average between the upper and lower groups for each item. The reliability of the observation scale was calculated by Cronbach's α, the intra-item agreement, and the validity was examined through content validity, the correlation between subdomains and total scores, and official validity using PICCOLO. Results: In item discrimination analysis, all items exhibited differences between upper and lower groups. The overall internal agreement for the observation scale was 0.95, with factor-specific internal agreement ranging from 0.83 to 0.95. The observation scale demonstrated notable correlations between total scores and sub-factors (0.45 to 0.93) and significant correlations with PICCOLO total scores (0.66 to 0.86). Conclusion/Implications: The study successfully verified the item discrimination, reliability, and validity of the Parent Play Interaction Observation Scale (PPIOS-Toddler).

• Journal of the Korean Data and Information Science Society
• /
• 제22권3호
• /
• pp.487-494
• /
• 2011

본 연구는 글로벌 스포츠리더 양성의 기반이라 할 수 있는 스포츠영재의 심리사회특성을 알아보는데 있어 기본적인 요인인 자아존중감의 문항적합도를 파악하기 위한 목적으로 이루어졌다. 이를 위해 한국체육대학교 2010년 체육영재양성사업에 참여하여 체육영재로 선발된 아동 50명에 대해 설문을 실시하고 통계분석 하였다. 조사도구로는 Rosenberg (1965)의 자아존중감 척도를 사용하였으며, 총 8문항에 대해 4점 리커트 척도로 응답하도록 하였다. 점수가 높을수록 자아존중감 정도가 높음을 의미하며, 본 연구에서 신뢰도인 크론바 알파는 .785였다. SPSS 18.0을 사용하여 빈도분석, 기술통계, 신뢰도 분석을 수행하였다. 문항적합도를 산출하기 위하여 WINSTEPS 3.70 (Linacre, 2010)을 사용하여 피험자신뢰도, 문항신뢰도, 척도수의 적절성, 문항적합도와 문항난이도, 척도의 난이도에 따른 적절성을 산출하였다. 연구목적에 따른 통계분석 결과 첫째, 자아존중감 피험자 신뢰도는 내-외적합도 1.01~1.03 문항신뢰도는 내-외적합도 1.01~1.01로 적합하였다. 둘째, 척도 범주수의 적절성에서는 단계지수로 판단한 결과 4점척도가 적합하였다. 셋째, 문항적합도와 문항난이도분석에서는 문항 2, 7, 8번 3문항에서 문제점이 발견되었다. 넷째, 척도의 적절성에서는 스포츠영재의 능력분포와 척도자체의 난이도면에서 판단할 때, 2, 7, 8번 문항은 적절하지 못한 것으로 확인되었다.

• 컴퓨터교육학회논문지
• /
• 제15권6호
• /
• pp.33-41
• /
• 2012

본 논문은 온라인 평가 문항 관리 시스템 및 방법에 관한 것이다. 제안하는 시스템은 학습자 정보 데이터베이스, 영역별, 난이도별로 분류된 문항을 저장하는 문제 은행 데이터베이스로 구성된다. 문제은행 데이터베이스는 특정 학습자 또는 특정 학습에 대한 문항을 선택하는 문항 선제부, 특정 학습자 또는 특정 학습에 대한 문제지를 제작하는 문제지 제작부, 문제지를 저장하였다가 온라인 테스트를 수행할 때 출력하는 문제지 은행 데이터베이스를 포함한다. 학습자가 온라인 테스트에 제출된 문항들에 대한 문항 선택순서, 보기 선택순서, 클릭회수, 반응시간에 대한 평가 데이터를 수집하는 온라인 테스트부, 및 온라인 테스트부로부터 수집된 학습자의 온라인 테스트 평가 데이터를 분석하여 학습자의 학습수준과 학습능력, 성향을 평가하고 진단하여 보고하는 반응패턴 분석부를 포함한다. 제안하는 시스템은 보기 선택순서, 클릭회수, 반응시간을 학습자의 평가결과에 반영하여 효율적으로 학습자의 학습수준과 학습능력, 성향을 평가하고 진단할 수 있다.

• Industrial Engineering and Management Systems
• /
• 제11권2호
• /
• pp.134-141
• /
• 2012

It is difficult to find an appropriate ordering policy for a many types of items. One of the reasons for this difficulty is that each item has a different demand trend. We will classify items by shipment trend and then decide the ordering policy for each item category. In this study, we indicate that categorizing items from their statistical characteristics leads to an ordering policy suitable for that category. We analyze the ordering policy and shipment trend and propose a new method for selecting the ordering policy which is based on finding the strongest relation between the classification of the items and the ordering policy. In our numerical experiment, from actual shipment data of about 5,000 items over the past year, we calculated many statistics that represent the trend of each item. Next, we applied the canonical correlation analysis between the evaluations of ordering policies and the various statistics. Furthermore, we applied the cluster analysis on the statistics concerning the performance of ordering policies. Finally, we separate items into several categories and show that the appropriate ordering policies are different for each category.

• 한국터널지하공간학회 논문집
• /
• 제14권6호
• /
• pp.683-697
• /
• 2012

본 논문에서는 쉴드 TBM 터널에서 적용 가능한 리스크 분석 방법을 연구하였다. FTA 방법을 통해 리스크 아이템과 각각의 발생확률을 확인하고 AHP 방법을 통해 각각의 리스크 아이템의 영향도를 구하였다. 마지막으로 각각의 리스크 아이템의 리스크 레벨을 평가할 수 있었다. 개발된 방법을 EPB 쉴드 터널이 사용된 서울 지하철 현장에 적용하여 리스크 분석 결과가 현장 데이터에 부합하는 합리적 결과임을 검증하였다.

• Child Health Nursing Research
• /
• 제15권3호
• /
• pp.314-324
• /
• 2009

Purpose: This study was done to test the reliability and validity of the Korean parent as a teacher (KPAAT) inventory for a group of parents of preschoolers. Methods: For this methodological study with 187parents were recruited from October to December, 2004 using convenience sampling. Self-report questionnaires measured level of child-rearing attitude. Internal consistency reliability was assessed with Cronbach's alpha coefficients. Construct validity of KPAAT inventory was analyzed using item analyses and factor analysis. Statistical analysis was done using SPSS Program Version 14.0. Results: The Cronbach's alpha coefficient for the KPAAT inventory was 0.881. For item analyses, inter-item correlation coefficients were -0.029${\sim}$0.781. Corrected item-total correlation coefficients were 0.012-0.737. Item-to"subscale correlation coefficients ranged from 0.509 to 0.817. Subscale-to-total correlation coefficients were 0.965, 0.711, respectively. Orthogonal varimax rotation of the 85 items in 16 areas of the KPAAT inventory, showed two factors, positive parenting attitude and negative parenting attitude. These two factors explained 48.2% of the total variance. Conclusion: In the original KPAAT inventory six factors were identified through factor analysis, however, in this study only two factors were extracted. Whereas, internal consistency reliability was within an acceptable range, these results suggest additional studies are needed to improve the validity of the KPAAT inventory.