Validation of a French translation of the McLean Screening Instrument for Borderline Personality Disorder, invariance across genders, and association with depression, trauma symptoms, and substance use among university students

Abstract: The present study investigated psychometric properties of a French translation of the McLean Screening Instrument for Borderline Personality Disorder (MSI-BPD; Zanarini et al., 2003) in a large sample of university students (N = 1,350). A confirmatory factor analysis supported the single-factor structure of the MSI-BPD, and its configural, metric and scalar invariance across gender was established. Internal consistency was high (tetrachoric α = .88; Ω = .88). MSI-BPD scores were significantly correlated to depressive symptoms (r = .57), trauma symptoms (r = .40), negative consequences of substance use (r = .25), and frequency of drug use (r = .11). Finally, 9.5% of the sample reached the clinical cutoff, which is similar to the pooled prevalence for BPD reported in a recent meta-analysis of university students. The present study showed that the French translation of the MSI-BPD is a psychometrically sound screening tool for BPD in both men and women

Measurement invariance of the Personality Inventory for DSM-5 across sex

IntroductionThere has been an international movement towards dimensional models of personality disorders (PDs) in the last decades, which culminated in the publication of the Alternative Model of Personality Disorders (AMPD) in the Emerging Measures and Models section of the DSM-5. This model was accompanied by a APA-sanctioned Personality Inventory for DSM-5 (PID-5) for the assessment of the AMPD pathological personality traits. One major issue with the assessment of personality disorders pertains to sex differences, and measurement invariance across sex in assessment instruments for PDs is necessary in order to ensure non-biased evaluations and to make valid comparisons between men and women. This study aimed to provide more information on measurement invariance across sex for the PID-5, using both the original scoring approach provided by the authors of the instrument and the scoring approach suggested by the APA in the published version of the PID-5.MethodsThis study was conducted with a sample of 2273 participants from the general Québec (Canada) adult population aged 18 to 90 years (M = 46.59; SD = 16.32; 51.8% women).ResultsThe original scoring approach model showed good fit to data after freeing paths between certain traits and reached strict invariance. The APA scoring approach also showed good fit to data and reached strict invariance, but needed an adjustment (path freed between Emotional lability and Impulsivity in men) to reach scalar invariance.DiscussionIn line with previous research, the PID-5 is invariant across sex and the five-factor structure adjusts well to data. The APA scoring approach appears to attenuate the cross-loading problem observed with the original scoring approach. In light of these results, we recommend using the APA scoring approach to derive domain scores

Validity of the LPFS-BF 2.0

Abstract : With the introduction of the Alternative Model of Personality Disorders in the DSM-5, the need for short measures of the level of personality functioning has emerged, both for screening purposes and for assessing change during treatment. The Level of Personality Functioning Scale-Brief Form 2.0 (LPFS-BF 2.0) was constructed for this and has received support for its two-factor structure and criterion validity. The authors aimed to provide additional construct validity evidence for the LPFS-BF 2.0 by examining its factor structure and measurement invariance across the Dutch, English, French, and Spanish versions and across gender, and its criterion validity. Results showed that the two-factor model had a good fit to the data in the four linguistic versions. Configural and metric invariance were supported across linguistic versions and gender, while scalar invariance was partially supported. Reporting a mental health disorder and having consulted with a mental health professional were associated with higher LPFS-BF 2.0 scores

Clostridium difficile-associated diarrhea in a region of Quebec from 1991 to 2003: a changing pattern of disease severity

BACKGROUND: Recent reports suggest that Clostridium difficile colitis may be evolving into a more severe disease. During the second half of 2002 we noted an increase in the number of patients with severe C. difficile-associated diarrhea (CDAD) in our institution. We describe cases of CDAD at our institution over a 13-year period and investigate changes in illness severity. METHODS: We undertook a retrospective chart review of all cases of CDAD diagnosed at the Centre hospitalier universitaire de Sherbrooke from Jan. 1, 1991, to Dec. 31, 2003. Because the hospital serves a well-defined population of Quebec, we were also able to calculate population-based incidence during this period. We abstracted data on individual patients from patient charts and from hospital and pharmacy computer databases. We defined cases of CDAD as having a positive C. difficile cytotoxicity assay result, or endoscopic or histopathological evidence of pseudomembranous colitis. A case was considered complicated if one or more of the following was observed: megacolon, perforation, colectomy, shock requiring vasopressor therapy, or death within 30 days after diagnosis. RESULTS: A total of 1721 cases of CDAD were diagnosed during the study period. The incidence increased from 35.6 per 100 000 population in 1991 to 156.3 per 100 000 in 2003; among patients aged 65 years or more, it increased from 102.0 to 866.5 per 100 000. The proportion of cases that were complicated increased from 7.1% (12/169) in 1991–1992 to 18.2% (71/390) in 2003 (p < 0.001), and the proportion of patients who died within 30 days after diagnosis increased from 4.7% (8/169) in 1991– 1992 to 13.8% (54/390) in 2003 (p < 0.001). A high leukocyte count (20.0 х 10(9)/L or greater) and an elevated creatinine level (200 μmol/L or greater) were strongly associated with adverse outcomes: in 2003, 45 (40.9%) of 110 patients with a high leukocyte count or creatinine level, or both, had complicated CDAD and 28 (25.5%) died within 30 days after diagnosis. After adjustment for age and other confounding factors, patients initially given oral vancomycin therapy had a risk of progression to complicated CDAD that was 79% lower than the risk among patients initially treated with metronidazole (adjusted odds ratio 0.2, 95% confidence interval 0.06–0.8, p = 0.02). INTERPRETATION: An epidemic of CDAD with an increased case-fatality rate has had important consequences on the elderly population of our region. Our observational data suggest that the equivalence of vancomycin and metronidazole in the treatment of CDAD needs to be questioned

Prevalence of AMPD

Abstract : The Alternative Model of Personality Disorders (AMPD), introduced in Section III of the DSM-5 (APA, 2013), was proposed as a new operationalization of personality disorders (PD) aiming to overcome the several limitations of the traditional symptom-based model (Waugh et al., 2017; Zimmerman et al., 2019). In the AMPD, PD are defined by two dimensional criteria (the level of personality functioning and maladaptive personality traits), but as a hybrid model, it also allows for categorical assessment of PD (i.e. “hybrid types”) to facilitate continuity with clinical practice. The present study aimed to provide normative data for two widely used instruments assessing Criterion A (Level of Personality Functioning Scale – Self-Report; Morey, 2017) and B (Personality Inventory for DSM-5; Krueger et al., 2012) in a large populational French-Canadian sample. Regarding the categorical assessment, Gamache et al. (2022) recently tested scoring approaches for extracting the PD hybrid types from dimensional measures of the AMPD. In the present study, these approaches were used to estimate prevalence rates for these PD hybrid types in two samples. In the populational sample, results showed that prevalence rates varied from 0.2% (antisocial PD) to 3.0% (trait-specified PD), with an overall prevalence of 5.9% to 6.1% for any PD hybrid type. Prevalence was higher in men than in women in the populational sample, but the contrary was observed in the at-risk sample. Prevalence was higher in younger adults than in middle-aged and older adults

Table_2_Measurement invariance of the Personality Inventory for DSM-5 across sex.xlsx

IntroductionThere has been an international movement towards dimensional models of personality disorders (PDs) in the last decades, which culminated in the publication of the Alternative Model of Personality Disorders (AMPD) in the Emerging Measures and Models section of the DSM-5. This model was accompanied by a APA-sanctioned Personality Inventory for DSM-5 (PID-5) for the assessment of the AMPD pathological personality traits. One major issue with the assessment of personality disorders pertains to sex differences, and measurement invariance across sex in assessment instruments for PDs is necessary in order to ensure non-biased evaluations and to make valid comparisons between men and women. This study aimed to provide more information on measurement invariance across sex for the PID-5, using both the original scoring approach provided by the authors of the instrument and the scoring approach suggested by the APA in the published version of the PID-5.MethodsThis study was conducted with a sample of 2273 participants from the general Québec (Canada) adult population aged 18 to 90 years (M = 46.59; SD = 16.32; 51.8% women).ResultsThe original scoring approach model showed good fit to data after freeing paths between certain traits and reached strict invariance. The APA scoring approach also showed good fit to data and reached strict invariance, but needed an adjustment (path freed between Emotional lability and Impulsivity in men) to reach scalar invariance.DiscussionIn line with previous research, the PID-5 is invariant across sex and the five-factor structure adjusts well to data. The APA scoring approach appears to attenuate the cross-loading problem observed with the original scoring approach. In light of these results, we recommend using the APA scoring approach to derive domain scores.</p

Equivalence of the French-Canadian translation to the original English version of the Adult Self-Report

Cette recherche a pour objectif d’évaluer l’équivalence de la version en français pour le Canada de l’Adult Self-Report (ASR) (Achenbach & Rescorla, 2003) à sa version originale états-unienne en langue anglaise. Des étudiants universitaires bilingues (n = 251) de quatre provinces canadiennes ont répondu aux versions anglaise et française, à une à deux semaines d’intervalle. Des corrélations allant de 0,72 à 0,87 montrent un degré de correspondance élevé entre les deux versions. La taille des différences entre les moyennes aux échelles varie de négligeable (d = 0,01) à petite (d = 0,19). Les coefficients alpha ordinaux de la version française varient de 0,66 à 0,96, mais sont plus faibles que ceux de la version anglaise pour plusieurs échelles. Dans l’ensemble, les résultats permettent de conclure que l’équivalence de la version en français pour le Canada de l’ASR à sa version originale en langue anglaise est suffisante pour en recommander l’utilisation.Abstract : The aim of the present study was to evaluate the equivalence of the French-Canadian version of the Adult Self-Report (ASR; Achenbach & Rescorla, 2003) to its original English (USA) version. Both the original English version and the newly translated French-Canadian version were administered to 251 bilingual students from four Canadian provinces (Manitoba, New-Brunswick, Ontario, and Quebec), with a one to two weeks interval. Correlations varying from 0.72 to 0.87 indicated a high degree of correspondence between the scales of the two versions. Cohen's d calculated using Morris and DeShon's (2002) formula for within-subjects designs indicate that differences between mean scores varied from near-zero (d = 0.01) to small (d = 0.19), and suggest that they are not clinically significant. Ordinal alpha coefficients for the scales of the French-Canadian version varied from 0.66 to 0.96 but are inferior to those of the English version in seven of the eleven scales. Globally, results indicate that the equivalence of the French-Canadian version to the original English version of the ASR is sufficient to recommend its use

Table_1_Measurement invariance of the Personality Inventory for DSM-5 across sex.docx

IntroductionThere has been an international movement towards dimensional models of personality disorders (PDs) in the last decades, which culminated in the publication of the Alternative Model of Personality Disorders (AMPD) in the Emerging Measures and Models section of the DSM-5. This model was accompanied by a APA-sanctioned Personality Inventory for DSM-5 (PID-5) for the assessment of the AMPD pathological personality traits. One major issue with the assessment of personality disorders pertains to sex differences, and measurement invariance across sex in assessment instruments for PDs is necessary in order to ensure non-biased evaluations and to make valid comparisons between men and women. This study aimed to provide more information on measurement invariance across sex for the PID-5, using both the original scoring approach provided by the authors of the instrument and the scoring approach suggested by the APA in the published version of the PID-5.MethodsThis study was conducted with a sample of 2273 participants from the general Québec (Canada) adult population aged 18 to 90 years (M = 46.59; SD = 16.32; 51.8% women).ResultsThe original scoring approach model showed good fit to data after freeing paths between certain traits and reached strict invariance. The APA scoring approach also showed good fit to data and reached strict invariance, but needed an adjustment (path freed between Emotional lability and Impulsivity in men) to reach scalar invariance.DiscussionIn line with previous research, the PID-5 is invariant across sex and the five-factor structure adjusts well to data. The APA scoring approach appears to attenuate the cross-loading problem observed with the original scoring approach. In light of these results, we recommend using the APA scoring approach to derive domain scores.</p