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Int J Intercult Relat
Psychiatry Investig

Screening instrument for borderline personality disorder (SI-Bord)

 Screening instrument for borderline personality disorder (SI-Bord)

 แบบคัดกรองบุคลิกภาพแปรปรวนแบบเจ้าอารมณ์ ( ไซบอร์ด)


Tinakon Wongpakaran

Nahathai Wongpakaran


Download the SI-Bord here  SI-Bord Thai.pdf

                                             SI-Bord Eng Revised April 2023.pdf

                                             SI-Bord_PL Polish.pdf 


                                             SI-Bord Vietnamese .pdf


 SI-Bord consists of 5 questions representing the DSM-5 criteria of BPD for 1) abandonment avoidance, 2) interpersonal relationships instability, 3) identity disturbance, 4) suicidal and self-harm behaviors and 5) affective instability. It is a 4-point Likert scales, ranging from never (0) to very often (3). The total score ranges from 0 to 15.  The higher score represents more BPD symptoms or traits.

 Psychometric Property

 Construct validity

- SI-Bord showed to be a unidimensional scale with acceptable reliability (Cronbach’s alpha is 0.76) among Thai university students,  Cronbach's alpha of 0.724 among 700 Chinese university students, and Cronbach’s alpha for the entire scale was 0.85 for Polish sample.

 Concurrent validity  

SI-Bord positively correlated with depression and perceived stress (r = 0.669 to r = 0.690, p < 0.001) but negatively correlated with perceived social support (r = -0.520, p < 0.001).

         Diagnostic validity

 The ROC curve was analyzed against gold standard (the psychiatrists). The AUC was 0.826 (95% CI, 0.715–0.907; p < 0.0001). Youden’s index and optimal criterion suggested a cut-off of > 9, which yielded a sensitivity of 56.25% (95%CI, 29.9%–80.2%), a specificity of 92.31% (95%CI, 81.5%–97.9%). With the cut-off >7, it yielded a sensitivity of 75.00% (95%CI,47.6 - 92.7), and a specificity of 73.08% (95%CI,59.0 - 84.4).

Permission to use:  The use of SI-Bord is not associated with any cost. However, if you choose to utilize the scale, please give credit to the following paper (as well as any other relevant sources).

 Lohanan T, Leesawat T, Wongpakaran T, Wongpakaran N, Karawekpanyawong N, Oon-Arom A, Kuntawong P. Development and validation of a screening instrument for borderline personality disorder (SI-Bord) for use among university students.  BMC Psychiatry. 2020 Aug 17;20(1):479. doi: 10.1186/s12888-020-02807-6.


For Thai, English, and Chinese language : please Contact Prof. Nahathai Wongpakaran or Prof. Nahathai Wongpakaran

For Polish language : please give credit to Piotr Brud, Jan Cieciuch ( also cite Brud and Cieciuch (2022) for Polish version)

For Vietnamese language : please give credit to Hoàng Thị Thu Trang 

Useful references : 

 Lohanan T, Leesawat T, Wongpakaran T, Wongpakaran N, Karawekpanyawong N, Oon-Arom A, Kuntawong P. Development and validation of a screening instrument for borderline personality disorder (SI-Bord) for use among university students. BMC Psychiatry. 2020 Aug 17;20(1):479. doi: 10.1186/s12888-020-02807-6.


Ingkachotivanich N, Wongpakaran T, Wongpakaran N, Oon-Arom A, Karawekpanyawong N, Lohanan T, Leesawat T. (2022). Different Effects of Perceived Social Support on the Relationship between Perceived Stress and Depression among University Students with Borderline Personality Disorder Symptoms: A Multigroup Mediation Analysis.Healthcare (Basel). Nov 3;10(11):2212. doi: 10.3390/healthcare10112212. 



Jia N, Sakulsriprasert C, Wongpakaran N, Suradom C, O' Donnell R. (2022). Healthcare (Basel). Sep 12;10(9):1751. doi: 10.3390/healthcare10091751. 

Brud, P. P., Cieciuch, J. (2022). Polish adaptation of self-report instruments for studying borderline personality traits – FFBI and FFBI-SF. Psychiatria Polska, 1-16.





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