Supplementary Material for: Social Anxiety/Taijin-Kyofu Scale (SATS): Development and Psychometric Evaluation of a New Instrument

<i>Background:</i> Taijin-kyofu (TK), especially the ‘convinced' subtype of TK (c-TK; also known as the ‘offensive' subtype of TK), is described as a Japanese culture-bound syndrome similar to social anxiety disorder (SAD). Recently, in Western countries, the symptoms of c-TK have been investigated in patients with SAD. We developed the Social Anxiety/Taijin-Kyofu Scale (SATS), a 12-item structured clinician-rated instrument designed to rate the severity of TK symptoms, and examined its reliability and validity. <i>Methods:</i> The SATS was administered to 15 patients with c-TK diagnosed using the traditional Japanese TK criteria. Interviews used to score patients' symptoms were recorded on videotape. Additionally, the Clinical Global Impression-Severity Scale (CGI-S) was administered to assess convergent validity. Interrater reliability was assessed on 15 videotaped interviews; the interviews were independently rated by 10 other raters. Test-retest re-liability was assessed on 15 videotaped interviews by the same rater at an interval of more than 4 weeks. <i>Results:</i> The SATS had high internal consistency (Cronbach's α = 0.97) and good interrater reliability (ICC = 0.88-0.93) and test-retest reliability (ICC = 0.94-0.99). The SATS total score correlated with the CGI-S scores (r = 0.77, p &lt; 0.0001). <i>Conclusion:</i> The SATS appears to be a reliable and valid measure of the symptoms of TK.

背景：对人恐怖症（Taijin-kyofu，TK），尤其是其“确信型”亚型（c-TK，亦被称为TK的“攻击性”亚型），被归类为一类与社交焦虑障碍（Social Anxiety Disorder, SAD）相似的日本文化特定综合征。近年来，西方国家已针对社交焦虑障碍患者的c-TK症状开展相关研究。本研究开发了社交焦虑/对人恐怖症量表（Social Anxiety/Taijin-Kyofu Scale, SATS）——一款包含12个条目、由临床医师评定的结构化工具，用于量化评估TK症状的严重程度，并对其信度与效度进行了检验。方法：本研究纳入15名经日本传统TK诊断标准确诊的c-TK患者，对其施测SATS。用于评定患者症状的访谈过程以录像形式留存记录。此外，本研究同时施测临床整体印象严重度量表（Clinical Global Impression-Severity Scale, CGI-S），以检验SATS的聚合效度。在评分者间信度检验环节，由另外10名独立评分者对15段录像访谈进行独立评定；在重测信度检验环节，由同一位评分者在间隔至少4周后，再次对15段录像访谈进行评定。结果：SATS表现出较高的内部一致性（克朗巴赫α系数=0.97），良好的评分者间信度（组内相关系数ICC=0.88~0.93）与重测信度（ICC=0.94~0.99）。SATS总分与CGI-S得分呈显著正相关（r=0.77，p<0.0001）。结论：综上，SATS是一款用于评定TK症状的可靠且有效的测评工具。