Swinkels Wilhelmina A M, Kuyk Jarl, van Dyck Richard, Spinhoven Philip
Stichting Epilepsie Instellingen Nederland (SEIN), Heemstede,The Netherlands.
Epilepsia. 2004 Jul;45(7):844-8. doi: 10.1111/j.0013-9580.2004.55203.x.
The psychometric properties of the Dutch version of the Washington Psychosocial Seizure Inventory (WPSI) were investigated.
The dimensional structure, reliability, and validity of the WPSI scales were assessed in 218 patients with epilepsy. The association with relevant patient and epilepsy characteristics also was studied.
An exploratory seven-factor principal components analysis was compared with a confirmatory factor analysis, and a loss of 3.36% of total variance was found. To increase the homogeneity of the scales, 30 items with low factor loadings or highest factor loading on the wrong clinical scale were excluded. This resulted in a higher amount of explained variance and improvement of the factor loadings of the remaining items. The reliability and validity of the WPSI scales was satisfactory to good. No clinically relevant associations were found between the WPSI scales and patient and epilepsy characteristics.
The factor structure, reliability, and validity of the Dutch translation of the WPSI are good and comparable to the original English version of Dodrill. The results demonstrate that shortening the WPSI makes the inventory more reliable and the clinical scales less dependent on each other.
对荷兰版华盛顿癫痫心理社会量表(WPSI)的心理测量学特性进行研究。
对218例癫痫患者评估WPSI各量表的维度结构、信度和效度。同时研究其与相关患者及癫痫特征的关联。
将探索性七因素主成分分析与验证性因素分析进行比较,发现总方差损失了3.36%。为提高量表的同质性,排除了30个在错误临床量表上具有低因子载荷或最高因子载荷的项目。这导致解释方差量增加,其余项目的因子载荷得到改善。WPSI各量表的信度和效度良好。未发现WPSI各量表与患者及癫痫特征之间存在临床相关关联。
WPSI荷兰语翻译版的因子结构、信度和效度良好,与原始英语版的多德里尔量表相当。结果表明,缩短WPSI可使该量表更可靠,且临床量表之间的相互依赖性降低。