Rasch analysis of the General Self-Efficacy Scale in a sample of persons with morbid obesity.
Rasch analysis of the General Self-Efficacy Scale in a sample of persons with morbid obesity.
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DOI：
10.1186/1477-7525-11-202
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发表时间：
2013-11-25
影响因子：
3.6
通讯作者：
Lerdal A
中科院分区：
文献类型：
--
作者：
Bonsaksen T;Kottorp A;Gay C;Fagermoen MS;Lerdal A
自我效能感是实现生活方式改变所必需的，因此它是与健康相关的重要目标。本研究的目的是评估一般自我效能量表（GSE）的心理测量学特性，使用Rasch分析的样本中的成人病态肥胖。从患者教育课程中招募了一个方便的病态肥胖成年人样本。共有141名参与者在课程开始时完成了GSE和人口调查问卷。统计方法包括分析的评级量表功能，项目适合Rasch部分信用模型，单维度，方面的人的反应效度，人分离的可靠性，和差分项目功能。还评价了省略与Rasch模型拟合较差的项目的版本。在原始10项版本中，第2项的评定量表没有单调前进，前三个GSE项目没有证明与Rasch模型的拟合优度可接受。在省略这三个项目的7项版本中，评定量表对所有项目都起作用，并且所有项目都表现出与Rasch模型的良好拟合。10项和7项版本的GSE都部分符合一维性标准。两个版本都不符合个人反应效度的标准，尽管7项的结果略好于10项的版本。这两个版本的GSE表现出的能力，分为三个不同层次的一般自我效能感的受访者。有些项目在年龄、教育程度和工作状况方面存在差异，但在7项目版本中较少。对于患有病态肥胖的成年人，7项版本的GSE似乎比原始的10项版本具有更好的心理测量特性。
Self-efficacy is needed for effectuating lifestyle changes, and it is therefore an important target related to health. The purpose of this study was to evaluate the psychometric properties of the General Self-Efficacy Scale (GSE) using Rasch analysis in a sample of adults with morbid obesity. A convenience sample of adults with morbid obesity was recruited from patient education courses. A total of 141 participants completed the GSE and a demographic questionnaire at the beginning of the course. The statistical approach included analysis of rating scale function, item fit to the Rasch partial credit model, unidimensionality, aspects of person-response validity, person-separation reliability, and differential item function. A version omitting items with poor fit to the Rasch model was also evaluated. The rating scale did not advance monotonically for item #2 in the original 10-item version, and the first three GSE items did not demonstrate acceptable goodness-of-fit to the Rasch model. In a 7-item version omitting these three items, the rating scale functioned well for all items, and all items demonstrated good fit to the Rasch model. Both the 10-item and 7-item versions of the GSE partially met the criteria for unidimensionality. Neither version met the criterion for person response validity, although the results were slightly better for the 7-item than for the 10-item version. Both versions of the GSE demonstrated the ability to separate the respondents into three distinct levels of general self-efficacy. Several items had differential item function in relation to age, education or work status, but there were fewer in the 7-item version. For adults with morbid obesity, a 7-item version of the GSE seems to have better psychometric properties than the original 10-item version.
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影响因子：
3.5
作者：
Lerdal, Anners;Andenaes, Randi;Fagermoen, May Solveig
通讯作者：
Fagermoen, May Solveig
影响因子：
3.4
作者：
de Zwaan, Martina;Petersen, Inga;Herpertz, Stephan
通讯作者：
Herpertz, Stephan
影响因子：
5.5
作者：
Cross, MJ;March, LM;Brooks, PM
通讯作者：
Brooks, PM
影响因子：
--
作者：
Billington, CJ;Epstein, LH;Harrison, B
通讯作者：
Harrison, B
影响因子：
2.1
作者：
Bonsaksen, Tore;Lerdal, Anners;Fagermoen, May Solveig
通讯作者：
Fagermoen, May Solveig