[Reliability and factorial structure of a rating scale for persistent vegetative state].
[Reliability and factorial structure of a rating scale for persistent vegetative state].
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[持续性植物人状态评定量表的可靠性和因子结构]。
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
Y. Ohashi
中科院分区：
文献类型：
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作者：
S. Fujiwara;N. Nakasato;Y. Nagamine;T. Yoshimoto;K. Suematsu;R. Takeda;S. Takahashi;E. Oda;Y. Ohashi
我们开发了一种新的评定量表，Kohnan植物人评分，来衡量植物人状态患者的严重程度和微小的临床变化。有日本神经外科学会规定的植物人状态条件对应的7项：运动功能、进食、排便、眼动、发声、交流、面部表情。每个项目分为5个序数类别：轻微（得分= 1），轻度(2)，中度(4)和极端(5)。总分为7 - 35分，分数越高表示越严重。我们检验了Kohnan营养评分的可靠性和析因结构。研究对象为10例符合植物人状态的患者。四名神经外科医生对受试者进行评分，其中两名在间隔一周后重复评分。作为信度的度量，对每个条目计算（加权）Cohen（1960, 1968）提出的Kappa系数，对汇总分数计算类内相关系数（ICC）。为了分析因子结构，进行了因子分析。评分内信度加权Kappa最小值为0.44，评分间信度加权Kappa最大值为0.37，评分间信度加权Kappa最大值为0.69。在因子结构上，第一因子的贡献率为91.5%，表明量表的单维性。ICC对总得分的估计为0.90 （95% ci: 0.766-0.970）。在此基础上，Kohnan植物性评分具有一定的单维性和较高的可靠性，可供实际应用。
We developed a new rating scale, Kohnan Vegetative Score, to measure severity and small clinical changes in vegetative state patients. It has 7 items corresponding to the conditions of vegetative state by Japanese Society of Neurosurgery: motor function, food ingestion, urination and defecation, eye movement, vocalization, communication, and facial expression. Each item is rated in 5 ordinal categories: slight (score = 1), mild(2), moderate(4), and extreme(5). The sum of the scores is used as the summary score, which ranges from 7 to 35, and high score means 'severe'. We examined the reliability and the factorial structure of the Kohnan Vegetative Score. The subjects were 10 patients who met the conditions of vegetative state. Four neurosurgeons rated the subjects, and then 2 of them repeated the rating after one week interval. As a measure of reliability, the (weighted) Kappa coefficient proposed Cohen (1960, 1968) was calculated for each item, and the intraclass correlation coefficient (ICC) was calculated for the summary score. To analyze the factorial structure, the factor analysis was carried out. The minimum and the maximum weighted Kappa values were 0.44 and 0.64 for intra-rater reliability, and 0.37 and 0.69 for inter-rater reliability, respectively. Concerning the factorial structure, the contribution of the first factor was 91.5% which indicated the unidimensionality of the scale. The ICC's estimate for the summary score were 0.90 (95% C.I.: 0.766-0.970). On the basis of these results, the Kohnan Vegetative Score has unidimensionality and high reliability enough for a practical use.