Mohebbi Mehrnaz, Mahmoudian Saeid, Motevalian Seyed Abbas, Janani Leila, Farhadi Mohammad, Daneshi Ahmad
Head & Neck Research Center, Department of Ear, Nose, and Throat Diseases, Iran University of Medical Sciences, Tehran, Iran.
Department of Otorhinolaryngology, Hannover Medical University (MHH), Hannover, Germany.
Basic Clin Neurosci. 2019 Nov-Dec;10(6):597-607. doi: 10.32598/BCN.9.10.360. Epub 2019 Sep 1.
Sensory Gating Inventory (SGI) measures behavioral aspects of Sensory Gating (SG), which filters irrelevant sensory inputs into the higher cortex. It modifies sensitivity to sensory stimuli. Abnormal SG leads to overloading of information in the brain and its subsequent dysfunction. Electrophysiological techniques cannot assess the behavioral aspects of SG. We aimed to design the Persian version of SGI with high validity and reliability.
After a forward and then backward translation of the original SGI, we assessed the content validity and construct validity of the Persian version. A total of 405 participants filled the Persian version of SGI. To assess test-retest reliability, 100 participants filled the inventory again 7-10 days later. The content validity ratio and index, as well as confirmatory factor analysis, were computed, too. Finally, the Cronbach's alpha, Cohen's kappa, and intraclass correlation coefficients were calculated.
The content validity ratios of all items of the inventory were more than 60%, which means that they were necessary according to the experts' opinions. Confirmatory factor analysis confirmed the fitness of the 4-factor structure of the original Inventory. The test-retest reliability using the intraclass correlation coefficient and Cronbach's alpha coefficients were also high for the four subscales. The Cohen's kappa coefficients revealed moderate to substantial level of agreement between the first and second scores for all items.
The Persian version of SGI has good and acceptable psychometric properties. It can be used as a valid and reliable tool for studying behavioral aspects of SG in Persian speaking population.
感觉门控量表（SGI）测量感觉门控（SG）的行为方面，感觉门控可将无关的感觉输入过滤到高级皮层。它会改变对感觉刺激的敏感性。异常的感觉门控会导致大脑中的信息过载及其随后的功能障碍。电生理技术无法评估感觉门控的行为方面。我们旨在设计具有高有效性和可靠性的波斯语版SGI。
在对原始SGI进行正向翻译然后反向翻译之后，我们评估了波斯语版的内容效度和结构效度。共有405名参与者填写了波斯语版的SGI。为了评估重测信度，100名参与者在7至10天后再次填写了该量表。还计算了内容效度比和指数以及验证性因素分析。最后，计算了克朗巴哈系数、科恩卡帕系数和组内相关系数。
该量表所有条目的内容效度比均超过60%，这意味着根据专家意见它们是必要的。验证性因素分析证实了原始量表四因素结构的适配性。四个分量表使用组内相关系数和克朗巴哈系数的重测信度也很高。科恩卡帕系数显示所有条目的第一次和第二次得分之间的一致性处于中等至较高水平。
波斯语版的SGI具有良好且可接受的心理测量学特性。它可以作为研究波斯语人群感觉门控行为方面的有效且可靠的工具。
