As an unexpected result was observed, with only one participant falling into the DIB-R group, the analysis was conducted on the participants who were in SCID-II (n= 135) and SCID-II/DIB-R groups (n= 126).
Between the seventeen studied outcome factors, only eight maintained statistical significance after Bonferroni correction and were included in the stepwise regression analysis to study which of them predicted BPD diagnoses with the DIB-R. Four factors were significant predictors of SCID-II/DIB-R group diagnoses: greater number of BPD criteria (Wald = 45.84; p < .001; OR = 2.81), more suicidal behaviors (Wald = 6.77; p = .009; OR = 3.53), more self-harm behaviors (Wald = 15.48; p < .001; OR = 5.52), and worse occupational status (Wald = 4.54; p = <.001; OR = 3.16) (Table 4).
The aim of this study was to investigate the different association of poor outcome risk factors in BPD patients diagnosed with BPD according to the SCID-II, the DIB-R or both interviews.
As the only one patient diagnosed with BPD by the DIB-R was excluded from the statistical analysis, a comparison with a DIB-R group was no available; so a logistic regression analysis was performed to identify the predictive risk of poor outcome variables of DIB-R diagnosis.
Secondly, we were not able to study a DIB-R group because only one patient was diagnosed with BPD by the DIB-R only.
In this line, our results rather than show than different disorder category diagnosed by both interviews indicate than the DIB-R diagnoses a subgroup of BPD patients with higher symptom severity and worse therapeutic prognosis compared to those BPD patients diagnosed by the SCID-II.