Table 3.
Results of mediation models reported in terms of the association among the personality traits, clinical scales and the student group variable (NSSI-BE vs NO-NSSI-BE)
| Unadjusted results | Adjusted (for clinical scale) results | ||||
|---|---|---|---|---|---|
| BPD traits | Unadjusted# OR (p-value) | Spearman ρ (p-value) | Adjusted# OR (p-value) | Clinical scale p-value | AIC |
| Separation Anxiety | 1.91 (<.001) | 235.50 | |||
| DERS | 0.40 (<.001) | 1.51 (.022) | <.001 | 219.45 | |
| CTQ | 0.08 (.289) | 1.90 (<.001) | .028 | 231.68 | |
| BIS-11 | 0.23 (.002) | 1.75 (.001) | .041 | 231.69 | |
| SCARE | 0.33 (<.001) | 1.56 (.014) | .002 | 211.36 | |
| PHQ-9 | 0.32 (<.001) | 1.52 (.021) | <.001 | 206.14 | |
| Anxiousness | 1.97 (<.001) | 234.08 | |||
| DERS* | 0.67 (<.001) | 1.23 (.329) | .001 | 223.96 | |
| CTQ | 0.38 (<.001) | 1.84 (.001) | .273 | 234.77 | |
| BIS-11 | 0.24 (.001) | 1.82 (.001) | .026 | 229.62 | |
| SCARE* | 0.73 (<.001) | 1.38 (.181) | .054 | 215.85 | |
| PHQ-9* | 0.68 (<.001) | 1.13 (.560) | <.001 | 211.30 | |
| Depressivity | 1.98 (<.001) | 234.48 | |||
| DERS* | 0.58 (<.001) | 1.30 (.219) | .001 | 223.39 | |
| CTQ | 0.44 (<.001) | 1.85 (.001) | .237 | 234.92 | |
| BIS-11 | 0.23 (.002) | 1.81 (.001) | .030 | 230.40 | |
| SCARE* | 0.46 (<.001) | 1.45 (.058) | .004 | 213.92 | |
| PHQ-9* | 0.62 (<.001) | 1.05 (.833) | <.001 | 211.59 | |
| Impulsivity | 1.45 (.018) | 246.23 | |||
| DERS* | 0.32 (<.001) | 1.17 (.368) | <.001 | 224.10 | |
| CTQ | 0.31 (<.001) | 1.34 (.068) | .063 | 244.24 | |
| BIS-11 | 0.52 (<.001) | 1.23 (.259) | .067 | 241.48 | |
| SCARE* | 0.15 (.051) | 1.30 (.123) | <.001 | 215.24 | |
| PHQ-9* | 0.25 (<.001) | 1.23 (.244) | <.001 | 210.26 | |
| Emotional lability | 2.13 (<.001) | 229.88 | |||
| DERS* | 0.67 (<.001) | 1.43 (.092) | .003 | 222.03 | |
| CTQ | 0.28 (<.001) | 2.03 (<.001) | .148 | 229.61 | |
| BIS-11 | 0.41 (<.001) | 1.95 (<.001) | .194 | 227.95 | |
| SCARE | 0.61 (<.001) | 1.58 (.028) | .036 | 212.64 | |
| PHQ-9* | 0.60 (<.001) | 1.43 (.075) | <.001 | 208.43 | |
| Hostility | 1.66 (.002) | 241.50 | |||
| DERS* | 0.42 (<.001) | 1.27 (.181) | <.001 | 223.11 | |
| CTQ | 0.35 (<.001) | 1.54 (.011) | .129 | 240.80 | |
| BIS-11 | 0.31 (<.001) | 1.51 (.014) | .043 | 236.47 | |
| SCARE | 0.30 (<.001) | 1.47 (.038) | .001 | 213.21 | |
| PHQ-9* | 0.38 (<.001) | 1.23 (.239) | <.001 | 210.24 | |
| Perceptual dysregulation | 1.89 (.004) | 241.57 | |||
| DERS* | 0.58 (<.001) | 1.21 (.280) | <.001 | 223.72 | |
| CTQ | 0.40 (<.001) | 1.65 (.035) | .226 | 241.98 | |
| BIS-11 | 0.44 (<.001) | 1.58 (.042) | .056 | 237.25 | |
| SCARE* | 0.45 (<.001) | 1.25 (.258) | .001 | 216.16 | |
| PHQ-9* | 0.60 (<.001) | 1.08 (.688) | <.001 | 211.47 | |
| Distractibility | 2.29 (<.001) | 226.85 | |||
| DERS | 0.54 (<.001) | 1.68 (.012) | .002 | 218.29 | |
| CTQ | 0.39 (<.001) | 2.18 (<.001) | .370 | 228.01 | |
| BIS-11 | 0–58 (<.001) | 2.28 (<.001) | .979 | 226.94 | |
| SCARE | 0.30 (<.001) | 1.85 (.002) | .002 | 207.02 | |
| PHQ-9 | 0.53 (<.001) | 1.57 (.032) | <.001 | 206.85 | |
DERS Difficulties in Emotion Regulation Scale, CTQ Childhood Trauma Questionnaire, BIS Barratt Impulsiveness Scale, SCARE Screen for Child Anxiety Related Emotional Disorders, PHQ-9 Patient Health Questionnaire
#OR evaluated on the standardized variables. The reference group is NO-NSSI-BE
Unadjusted ORs refer to univariate logistic models results (first step of Baron and Kenny); adjusted ORs were carried out by multiple logistic models and refer to ORs of the personality traits adjusted for the clinical scale. The column of Spearman ρ coefficients represents the association between the traits and clinical scales (second step of Baron and Kenny); the column of adjusted ORs represents the association between personality traits and the group variable adjusted for the corresponding clinical scale (last step of Baron and Kenny)
* Highlights a mediation effect of clinical scale on the relation trait-group: i.e. when the clinical scale is introduced in the multiple logistic model, the ORs associated to traits (column Adjusted# OR) become non-significant and the relative AIC decreases markedly