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"Latar belakang: Indeks Etiologi Gangguan Sendi Temporomandibula (GSTM) sebelumnya dibuat dengan Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) yang merupakan baku emas alat diagnostik TMD. Saat ini baku emas tersebut telah disempurnakan menjadi Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). Belum ada penelitian yang menguji akurasi Indeks Etiologi GSTM dengan baku emas DC/TMD. Tujuan: Mencari nilai titik potong baru Indeks Etiologi GSTM dan menguji akurasinya menggunakan baku emas DC/TMD. Metode: Penelitian ini adalah uji diagnostik dengan desain potong lintang yang dilakukan pada 171 subjek menggunakan pengisian Indeks Etiologi GSTM dan pemeriksaan klinis DC/TMD. Hasil: Analisis kurva Receiver Operating Characteristic (ROC) menghasilkan nilai Area Under the Curve (AUC) sebesar 80,5% (95% CI: 73,7-87,4%). Nilai titik potong optimal yaitu 6 dengan sensitivitas 67,9% dan spesifisitas 86,2%. Nilai Positive Predictive Value (PPV) 82,6%, Negative Predictive Value (NPV) 73,7%, Likelihood Rasio Positive (LR+) 4,92, dan Likelihood Rasio Negative (LR-) 0,37. Kesimpulan: Indeks Etiologi GSTM yang diuji dengan DC/TMD sebagai baku emas memiliki akurasi yang baik untuk digunakan sebagai alat skrining TMD. Nilai titik potong 6 sebagai batas antara risiko tinggi dan risiko rendah GSTM.

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Background: The Temporomandibular Etiology Index was previously made with the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) as the gold standard of TMD diagnostic tool. Now the gold standard has been refined to become the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). There are no studies that have tested the accuracy of the Temporomandibular Etiology Index with the DC/TMD gold standard. Purpose: To determine the new cut-off point of the Temporomandibular Etiology Index and test its accuracy using the DC/TMD gold standard. Methods: This study design was a cross-sectional diagnostic test conducted on 171 subjects using Temporomandibular Etiology Index questionnaires and DC/TMD clinical examination. Results: Receiver Operating Characteristic (ROC) curve analysis resulted in an Area Under the Curve (AUC) value of 80.5% (95% CI: 73.7-87.4%). The optimal cut-off point was 6 with 67.9% sensitivity and 86.2% specificity. Positive Predictive Value (PPV) 82.6%, Negative Predictive Value (NPV) 73.7%, Positive Likelihood Ratio (LR +) 4.92, and Negative Likelihood Ratio (LR-) 0.37. Conclusion: Temporomandibular Etiology Index has been tested with DC/TMD as the gold standard and has a good accuracy to be used as a TMD screening tool. The cut-off point of 6 is the boundary between high and low risk of temporomandibular disorders."