Cardiac catheterisation in the postoperative period emerges as a primary tool, providing effectiveness and safety in diagnosis, treatment guidance, and resolution of major residual lesions.

This is a retrospective case-control study. We collected the clinical records of patients who underwent cardiac catheterisation between January 2003 and December 2022 within the initial 72 hours after surgery in the pediatric cardiac ICU of a national referral hospital in Mexico City. Descriptive, univariate, and multivariate analyses were performed.

A total of 6,243 surgeries were performed, of which 264 were cardiac catheterizations carried out within the first 72 hours of the postoperative period;these included 73 diagnostic procedures and 191 interventional procedures. One hundred and thirty-five (135) catheterisations targeted recent suture intervention sites. The primary indications for cardiac catheterisation included low cardiac output and the suspicion of major residual lesions. Approximately 65% of interventions occurred within the first 24 hours and solved 426 residual lesions. No significant associations were found between mortality, complications, and the need for surgical reintervention in patients who underwent interventional catheterisation at recent suture sites (OR 1.93;95% CI:0.94–4.07:p = 0.076). Seventeen patients (17) were extubated in the initial 24 hours post-catheterisation. Two major complications were identified: rupture of the systemic-to-pulmonary shunt in the anastomosis, and a pulmonary artery laceration requiring emergency surgery. One patient died.

Cardiac catheterisation has evolved into a vital instrument to diagnose and resolve abnormalities and significant residual lesions without increasing the morbidity and mortality risks.

Impulsivity is a multidimensional trait associated with substance use disorders (SUDs), but the relationship between distinct impulsivity facets and stages of substance use involvement remains unclear.

We used genomic structural equation modeling and genome-wide association studies (N = 79,729–903,147) to examine the latent genetic architecture of nine impulsivity traits and seven substance use (SU) and SUD traits.

We found that the SU and SUD factors were strongly genetically inter-correlated (rG=0.77) but their associations with impulsivity facets differed. Lack of premeditation, negative and positive urgency were equally positively genetically correlated with both the SU (rG=.0.30–0.50) and SUD (rG=0.38–0.46) factors; sensation seeking was more strongly genetically correlated with the SU factor (rG=0.27 versus rG=0.10); delay discounting was more strongly genetically correlated with the SUD factor (rG=0.31 versus rG=0.21); and lack of perseverance was only weakly genetically correlated with the SU factor (rG=0.10). After controlling for the genetic correlation between SU/SUD, we found that lack of premeditation was independently genetically associated with both the SU (β=0.42) and SUD factors (β=0.21); sensation seeking and positive urgency were independently genetically associated with the SU factor (β=0.48, β=0.33, respectively); and negative urgency and delay discounting were independently genetically associated with the SUD factor (β=0.33, β=0.36, respectively).

Our findings show that specific impulsivity facets confer risk for distinct stages of substance use involvement, with potential implications for SUDs prevention and treatment.

Cannabis use and familial vulnerability to psychosis have been associated with social cognition deficits. This study examined the potential relationship between cannabis use and cognitive biases underlying social cognition and functioning in patients with first episode psychosis (FEP), their siblings, and controls.

We analyzed a sample of 543 participants with FEP, 203 siblings, and 1168 controls from the EU-GEI study using a correlational design. We used logistic regression analyses to examine the influence of clinical group, lifetime cannabis use frequency, and potency of cannabis use on cognitive biases, accounting for demographic and cognitive variables.

FEP patients showed increased odds of facial recognition processing (FRP) deficits (OR = 1.642, CI 1.123–2.402) relative to controls but not of speech illusions (SI) or jumping to conclusions (JTC) bias, with no statistically significant differences relative to siblings. Daily and occasional lifetime cannabis use were associated with decreased odds of SI (OR = 0.605, CI 0.368–0.997 and OR = 0.646, CI 0.457–0.913 respectively) and JTC bias (OR = 0.625, CI 0.422–0.925 and OR = 0.602, CI 0.460–0.787 respectively) compared with lifetime abstinence, but not with FRP deficits, in the whole sample. Within the cannabis user group, low-potency cannabis use was associated with increased odds of SI (OR = 1.829, CI 1.297–2.578, FRP deficits (OR = 1.393, CI 1.031–1.882, and JTC (OR = 1.661, CI 1.271–2.171) relative to high-potency cannabis use, with comparable effects in the three clinical groups.

Our findings suggest increased odds of cognitive biases in FEP patients who have never used cannabis and in low-potency users. Future studies should elucidate this association and its potential implications.

Relapse prevention is crucial in patients with schizophrenia, as repeated episodes can worsen psychopathology and functionality. There is strong evidence of antipsychotics efficacy in preventing relapse; however, non-compliance rates in patients with schizophrenia are very high. Long-acting injectable antipsychotics (LAIs) are an important treatment option but remain underutilized.

Aripiprazole once-monthly is a long-acting intramuscular injectable formulation of aripiprazole indicated for the maintenance treatment of schizophrenia in adult patients stabilized on oral aripiprazole.

If one injection start regimen is adopted, on the day of initiation, an injection of 400mg Aripiprazole once monthly should be administered accompanied by 10mg to 20mg of oral aripiprazole per day for the successive 14 days New treatment regimen: On the day it begins, inject 400 mg Aripiprazole twice at different sites and provide one 20 mg dose of oral aripiprazole

The main aim of this study is to evaluate the efficacy and tolerance of Aripiprazole long-acting injectable (ALAI) in stable patients with schizophrenia.The initial dose was administered according to the new regimen (Two injection Start).

The secondary objective is to compare hospitalizations and emergency interventions during 24 months before (retrospective) and after (prospective) switching to ALAI.

The study included 15 patients diagnosed with stable schizophrenia (DSM 5 criteria) who underwent treatment with ALAI. The beginning dosage was administered using the new regimen (Two Injection Start).

Over an 24-month follow-up period, the Clinical Global Impression-Schizophrenia scale (CGI-SCH), treatment adherence, concomitant medication, hospitalizations, emergency assists, and reported side effects were evaluated every three months.

Mean initial scores were 4.24 (±0.83) on GCI-SCH.

After 24 months, the mean scores varied from baseline by -1.21±0.74 (P<0.01) on the ICG-SCH.

The percentage of patients who remained admission-free at the end of the 24 months was 73%.

The treatment adherence rate for ALAI after 24 months was 66%.

The most frequent side effect with an incidence of 20% was transient mild insomnia. None of the patients who started ALAI after the 2-injection start regimen experienced severe adverse effects or severe adverse effects.

There were 20 hospital admissions during the 24-month period prior to the switch to ALI, which fell to 5 hospital admissions 24 months following the switch.

Similarly, there were 38 emergency assists during the 24-month period before the switch to ALI, which dropped to 9 emergency assists 24 months after the switch.

We found of Aripiprazole long-acting injectable (The starting dose was administered following the new regimen (Two injection Start)) is effective, safe, and well tolerated in clinical practice conditions

None Declared

Delirium is common in hospital settings, with approximately 3% to 45% of older patients in hospitals developing delirium during their stay. Among the elderly and those with severe or advanced medical conditions, the reported percentage of patients with delirium is over 56%. The three motor subtypes of delirium are hyperactive, hypoactive, and mixed. Another way to characterize delirium is based on whether it is reversible, irreversible, or terminal.

Identifying appropriate pharmacological treatment options among antipsychotics and their correlation with various precipitating and predisposing factors in the in-hospital context

This was a retrospective, cross-sectional, observational study that utilized a database created by the psychiatry department at the National Medical Center 20 de Noviembre, with data collected from April 2021 to April 2022. The database contains anonymized administrative and clinical data of patients who were seen in the psychiatry department for the diagnosis of any type of delirium, using the CAM scale for classification. The database includes records and data of hospitalized patients, encompassing all specialties at this medical center

A total of 139 patients were included in the study, of which 39% were female and 61% were male, with a mean age of 67 and a median age of 68 years. It was observed that the average duration of delirium symptoms, from receiving the consultation to remission, was approximately 6 days (p <0.005) (OR 5.12-6.62), and the average length of hospital stay was approximately 20 days (OR 17.3-22.09). Among the patients, 50.39% were overweight, 63% had hypertension (HTA), 29% had chronic kidney injury, 24% had a history of delirium, and 73% had recent surgical interventions. Patients with diabetes mellitus had a 3.1 times higher risk, those with HTA had a 2.8 times higher risk, and those with kidney injury had a 3.8 times higher risk of having a positive CAM result. It was observed that haloperidol, used in 84% of the patients, showed the highest percentage reduction in CAM scores

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The results of this study emphasize the importance of identifying risk factors associated with delirium and implementing effective treatment for this condition. It was observed that the average duration of delirium symptoms was approximately 6 days, which is relevant for understanding the course and management of this illness. Furthermore, it was found that the average hospital stay was 20 days, underscoring the burden that delirium can place on healthcare systems.

In conclusion, this study highlights the importance of identifying risk factors and providing appropriate treatment, such as the use of haloperidol, to improve outcomes in patients with delirium.

None Declared

Reviewing the histories of patients with childhood and adolescent schizophrenia, on numerous occasions, traumatic factors with great emotional and social impact are observed, such as situations of mistreatment, abuse and emotional deprivation, where help is requested but resources are scarce and the approach is limited without work in network.

1. Analysis of the consultation pathways in adolescents with severe psychiatric and socio-familial symptoms and the time delay in optimal guidance. 2. Evaluate the services involved. 3. Evaluate the clinical control of treatment with aripiprazole.

Retrospective observational analysis, 5 months, of prodromal symptoms of childhood psychosis and help-seeking pathways in a 13-year-old adolescent, as well as a description of the pharmacological approach and professional teams involved.

A 13-year-old adolescent who went to the emergency room with her mother for ingesting anti-cockroaches with self-inflicted intent. Reviewing his medical history, 4 serious autolytic gestures were detected in the last 2 months. Referred to Mental Health who did not attend.

On clinical examination, florid psychotic, with perplexity, self-reference, ideation of harm, language and behavioral disorganization. Auditory and kinesthetic hallucinations. A situation of neglect of the minor and abuse by the parents is detected; the risk had not been previously reported. Oral aripiprazole (up to 15 mg/day) was prescribed with good tolerance and progressive improvement in symptoms.

We worked jointly with Social Services, the Juvenile Prosecutor’s Office, Education and the hospital Psychiatry unit. In some of the resources the situation was already evident, the scope of their action was limited and delaying attention for months.

Based on cases like this, we ask ourselves if psychiatrists are sensitized to the comorbidity of serious mental pathology and the existence of risk situations in minors and if they are oriented toward multiprofessional management. Networking provides us with an early diagnosis, improving the therapeutic approach.

None Declared

Cognitive reserve (CR) refers to the ability of the brain to cope with damage or pathology. In bipolar disorder (BD), it has been seen that the effects of the disease may potentially reduce CR, thus compromising cognitive outcomes. This concept takes on special relevance in late life in BD, due to the increased risk of cognitive decline because of the accumulative effects of the disease and the potential effects of aging. Therefore, we believe that CR may be a protective factor against cognitive decline in older adults with bipolar disorder (OABD).

The aim of this study was to study the CR in OABD compared with healthy controls (HC) and to analyze its association with psychosocial functioning and cognitive performance.

A sample of euthymic OABD, defined as patients over 50 years old, and HC were included. CR was assessed using the CRASH scale. Differences in demographic, clinical, and cognitive variables between patients and HC were analyzed by t-test or X2 as appropriated. Lineal simple and multiple regressions analyses were used to study the association of CR and several clinical variables with functional and cognitive performance.

A total of 83 participants (42 OABD and 41 HC) were included. Compared to HC, OABD exhibited poorer cognitive performance (p<0.001), psychosocial functioning (p<0.001) and lower CR (p<0.001). Within the patient’s group, the linear simple regression analysis revealed that CR was associated with psychosocial functioning (β=-2.16; p=0.037), attention (β= 3.03; p=0.005) and working memory (β = 2.98; p=0.005) while no clinical factors were associated. Age and CR were associated with processing speed and verbal memory, but after applying multiple regression model, only the effect of age remained significant (β =-2.26; p= 0.030, and β =-2.23; p= 0.032 respectively). CR, age, and number of episodes were related to visual memory, but the multiple regression showed that only age (β = -2.37; p= 0.023) and CR (β = 3.99; p<0.001) were associated. Regarding executive functions only the number of manic episodes were significant. CR and age at onset were associated with visuospatial ability, but multiple regression only showed association of CR (β =2.23; p=0.032). Other clinical factors such as number of depressive or hypomanic episodes, illness duration, admissions, type of BD, and psychotic symptoms were not associated.

To the best of our knowledge, this is the first report that studies the CR in a sample of OABD. We demonstrated that OABD had lower CR than HC. Importantly, we observed that CR was associated with cognitive and psychosocial functioning in OABD, even more than disease-related factors. These results suggest the potential protector effect of CR against cognitive impairment, supporting that improving modifiable factors associated with the enhancement of CR can prevent cognitive decline.

L. Montejo: None Declared, C. Torrent Grant / Research support from: Spanish Ministry of Science and Innovation (PI20/00344) integrated into the Plan Nacional de I+D+I and co-financed by the ISCIII-Subdireccion General de Evaluacio ́n and the Fondo Europeo de Desarrollo Regional (FEDER), S. Martín: None Declared, A. Ruiz: None Declared, M. Bort: None Declared, G. Fico Grant / Research support from: Fellowship from “La Caixa” Foundation (ID 100010434 - fellowship code LCF/BQ/DR21/11880019), V. Oliva: None Declared, M. De Prisco: None Declared, J. Sanchez-Moreno Grant / Research support from: Spanish Ministry of Science and Innovation (PI20/00060) integrated into the Plan Nacional de I+D+I and co-financed by the ISCIII-Subdireccion General de Evaluacio ́n and the Fondo Europeo de Desarrollo Regional (FEDER),, E. Jimenez Grant / Research support from: Spanish Ministry of Science and Innovation (PI20/00060)integrated into the Plan Nacional de I+D+I and co-financed by the ISCIII-Subdireccion General de Evaluacio ́n and the Fondo Europeo de Desarrollo Regional (FEDER),, A. Martinez-Aran: None Declared, E. Vieta Grant / Research support from: Spanish Ministry of Science and Innovation (PI18/ 00805, PI21/00787) integrated into the Plan Nacional de I+D+I and cofinanced by the ISCIIISubdireccio ́n General de Evaluacio ́n and the Fondo Europeo de Desarrollo Regional (FEDER); the Instituto de Salud Carlos III; the CIBER of Mental Health (CIBERSAM); the Secretaria d’Universitats i Recerca del Departament d’Economia i Coneixement (2017 SGR 1365), the CERCA Programme, and the Departament de Salut de la Generalitat de Catalunya for the PERIS grant SLT006/17/00357; the European Union Horizon 2020 research and innovation program (EU.3.1.1. Understanding health, wellbeing and disease: Grant No 754907 and EU.3.1.3. Treating and managing disease: Grant No 945151)., B. Sole: None Declared

In recent years, research has focused on the older adults with bipolar disorder (OABD), aged 50 years and over, a constantly growing population due to the increased of life expectancy. Actually, some authors suggest that these individuals constitute a distinct subtype with a specific and different needs such as seen in epidemiologic, clinical and cognitive features. Further research has revealed significant differences between females and males with BD in clinical and cognitive variables in middle-aged and young patients, but this topic among OABD population remains unclear.

The aim of this study is to identify the distinctive profile in clinical, functional and neurocognitive variables between females and males in OABD.

A sample of OABD and Healthy Controls (HC) were included. Euthymic patients or in partial remission were included. Neurocognition was measured with a battery of tests that included premorbid intelligence quotient, working memory, verbal and visual memory, processing speed, language and executive functions. Independent t-test and Chi-squared test analysis were performed as appropriated.

According to the analysis, statistically significant differences were seen between females and males. A more impaired cognitive profile is observed in women. They performed worse in the subscales of Arithmetic (F= 6.728, p = <0.001), forward digits (F= 0.936, p= 0.019) and Total Digits (F= 1.208, p= 0.019) of the WAIS-III, in the Stroop Color Word Test, color reading (F= 0.130, p= < 0.001), in the Continuous Performance Test, block change measure (F= 2.059, p= 0.037), in the Rey-Osterrieth Complex Figure-copy (F= 0.005, p= 0.029) and in the Boston Naming Test (F= 0.011, p= 0.024). Nor significant differences were found in clinical neither in psychosocial functioning variables.

In view of the following results, and since no differences were observed between women and men in terms of clinical and functional outcomes, it could be said that the differences observed in cognition cannot be explained by disease-related factors. Furthermore, these results highlight the need to develop a gender-specific cognitive interventions in OABD population. In this way, we could have an impact on the course of the illness to reach a better quality of life.

S. Martín-Parra: None Declared, C. Torrent Grant / Research support from: Spanish Ministry of Science and Innovation (PI20/00344) integrated into the Plan Nacional de I+D+I and co-financed by the ISCIIISubdireccion General de Evaluación and the Fondo Europeo de Desarrollo Regional (FEDER), A. Ruiz: None Declared, M. Bort: None Declared, G. Fico Grant / Research support from: Fellowship from “La Caixa” Foundation (ID 100010434 - fellowship code LCF/BQ/DR21/11880019), V. Oliva: None Declared, M. Prisco: None Declared, J. Sanchez-Moreno Grant / Research support from: Spanish Ministry of Science and Innovation (PI20/00060) integrated into the Plan Nacional de I+D+I and co-financed by the ISCIII-Subdireccion General de Evaluación and the Fondo Europeo de Desarrollo Regional (FEDER), E. Jimenez Grant / Research support from: Spanish Ministry of Science and Innovation (PI20/00060) integrated into the Plan Nacional de I+D+I and co-financed by the ISCIII-Subdireccion General de Evaluación and the Fondo Europeo de Desarrollo Regional (FEDER), A. Martinez-Aran: None Declared, E. Vieta Grant / Research support from: Spanish Ministry of Science and Innovation (PI18/ 00805, PI21/00787) integrated into the Plan Nacional de I+D+I and cofinanced by the ISCIII Subdirección General de Evaluación and the Fondo Europeo de Desarrollo Regional (FEDER); the Instituto de Salud Carlos III; the CIBER of Mental Health (CIBERSAM); the Secretaria d’Universitats i Recerca del Departament d’Economia i Coneixement (2017 SGR 1365), the CERCA Programme, and the Departament de Salut de la Generalitat de Catalunya for the PERIS grant SLT006/17/00357; the European Union Horizon 2020 research and innovation program (EU.3.1.1. Understanding health, wellbeing and disease: Grant No 754907 and EU.3.1.3. Treating and managing disease: Grant No 945151), B. Sole: None Declared, L. Montejo: None Declared

Suicide is one of the leading causes of unnatural death worldwide. There might be meaningful differences between those individuals that attempt suicide once in their lifespan and those who make multiple attempts in terms of sociodemographic and clinical characteristics. There are no previous meta-analysis addressing this topic in the adult population.

We aimed to examine the factors that differentiate single and multiple suicide attempters in adult population.

We followed the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines to conduct this review and meta-analysis. The review protocol was registered in PROSPERO. We carried out a systematic literature search in three databases to identify original studies that explored the differences between single and multiple suicide attempters among adult population. A total of 75 studies were included in the review and 69 were included in the meta-analysis.

Multiple attempters were more likely to present certain disorders such as mood and psychotic disorders, as well as personality or substance use disorders. Higher suicide ideation and suicide intent scores also characterized this group. Childhood trauma experiences, stressful life events, and higher rates of hopelessness were statistically significant in multiple attempters.

Identifying the factors predicting multiple suicide attempts helps to delineate a high-risk suicidal profile that should be taken into account in the clinical and suicide prevention scenario.

None Declared

Schizophreniform Disorder is described pretty similar to schizophrenia, but with the difference of the symptoms duration which have to last for at least 1 month but less than 6 months. Patients have to be back at their baseline functional level once the disorder has resolved. This is a heterogeneous group of patients who have either a disorder similar to schizophrenia or something closer to a mood disorder.

To analyze clinical, psychopathological and epidemiological characteristics of schizophreniform disorder and also review causes, incidence, prevalence, diagnostic, therapeutic tools and the importance of maintaining the treatment, because of the abandonment of the treatment, which is a predictor of relapses.

A review of the main impact literature concerning schizophreniform disorder is done during the last five years: prevalence, incidence, pathogenesis and its relationship with other psychiatric disorders encoded in DSM-V are studied.

The etiology is unknown. Psychotic symptoms can be treated with antipsychotics for 3 to 6 months. They usually respond faster than patients with schizophrenia (75% vs 20% respond within 8 days).

The disease has a favorable prognosis, and has similarities with mood disorders. However, some data suggest a close relationship to schizophrenia. In support of the relationship with mood disorders, patients have more affective symptoms and a better outcome than patients with schizophrenia.

None Declared

The relationship between Borderline Personality Disorder and Attention Deficit Hyperactivity Disorder has been highlighted in different studies over the last few years, with an estimated prevalence of around 15-35% of ADHD in adult patients diagnosed with BPD and a 7.4 times higher risk of developing BPD in patients diagnosed with ADHD.

To conduct a pragmatic review of the recent literature on the relationship between ADHD and BPD, so that it serves as a starting point for an in-depth study of the sociodemographic, clinical and cross-sectional dimensional factors of both disorders.

A bibliographic review of scientific articles published in recent years, in English and Spanish, extracted from the MEDLINE database, which delve into the relationship between BPD and ADHD, will be carried out. In addition, the common psychopathological dimensions, such as impulsivity or emotional dysregulation, as well as the weight of other dimensional factors related to both disorders, will be studied.

The results of the selected articles will be grouped, for a better understanding, in the following sections:

• - Clinical factors and shared comorbidities.

• - Psychopathological dimensions: impulsivity and emotional dysregulation.

• - Other common dimensional factors.

There are common symptoms and etiological or perpetuating factors, as well as comorbidities shared in both conditions, which in many cases make the correct diagnosis and, therefore, the appropriate therapeutic approach to these patients, quite difficult. Taking into account the differential characteristics of BPD and ADHD, it is possible to create different profiles that allow a precise approach to both disorders in those cases in which they coexist in the same patient.

None Declared

Negative symptoms are present in more than two thirds of schizophrenic patients throughout the evolution of the disorder. These include symptoms related to reduced motivation or pleasure, such as avolition, anhedonia and asociality, and reduced expressivity, including alogia and blunted affect.

We present the case of a 24-year-old man who was admitted to our Psychosis Day Hospital after several psychotic episodes, presenting with prominent negative symptomatology that was imbued with mystical delusional beliefs.

1. 1) To describe the clinical particularities of this case, focusing on the improvement of negative symptoms during the course of treatment at our Day Hospital.

2. 2) To review the available evidence regarding the pharmacological and psychotherapeutic management of negative symptoms of schizophrenia.

A review of the patient’s clinical history and complementary tests were carried out. Likewise, we reviewed the available literature in relation to the management of negative symptoms of schizophrenia in an ambulatory setting.

The patient was admitted to our Day Hospital after four psychiatric hospitalizations due to mystical delusions, ideas of grandiosity and hyper-spirituality, along with prominent negative symptoms at the moment of inclusion at our centre, including social withdrawal, diminished affective response, lack of interest in the academic sphere and poor social drive. Although previous positive symptoms were present in a lesser degree, the patient interpreted the presence of the negative symptoms described above as a “punishment” or “test” from spiritual creatures.

Management of negative symptoms represents a major unmet need in schizophrenia. Modest effect size evidence for pharmacological approaches favours the use of antipsychotic in monotherapy and augmentation of antipsychotic treatment with other agents, such as antidepressants. Scarce evidence regarding psychotherapeutic approaches to these symptoms points to the use of cognitive behaviour therapy and social skills training.

• - Clinical identification and characterization of negative symptoms is crucial when treating patients with schizophrenia, as these are associated with important disability and poorer functional outcomes.

• - Differentiation of primary and secondary negative symptoms is a key aspect in the evaluation and management of schizophrenic patients.

• - This case outlines the coexistence of positive and negative symptoms, and illustrates the challenges in the pharmacological and psychotherapeutic management of these symptoms at a Psychosis Day Hospital.

None Declared

Knowledge of sex differences in risk factors for posttraumatic stress disorder (PTSD) can contribute to the development of refined preventive interventions. Therefore, the aim of this study was to examine if women and men differ in their vulnerability to risk factors for PTSD.

As part of the longitudinal AURORA study, 2924 patients seeking emergency department (ED) treatment in the acute aftermath of trauma provided self-report assessments of pre- peri- and post-traumatic risk factors, as well as 3-month PTSD severity. We systematically examined sex-dependent effects of 16 risk factors that have previously been hypothesized to show different associations with PTSD severity in women and men.

Women reported higher PTSD severity at 3-months post-trauma. Z-score comparisons indicated that for five of the 16 examined risk factors the association with 3-month PTSD severity was stronger in men than in women. In multivariable models, interaction effects with sex were observed for pre-traumatic anxiety symptoms, and acute dissociative symptoms; both showed stronger associations with PTSD in men than in women. Subgroup analyses suggested trauma type-conditional effects.

Our findings indicate mechanisms to which men might be particularly vulnerable, demonstrating that known PTSD risk factors might behave differently in women and men. Analyses did not identify any risk factors to which women were more vulnerable than men, pointing toward further mechanisms to explain women's higher PTSD risk. Our study illustrates the need for a more systematic examination of sex differences in contributors to PTSD severity after trauma, which may inform refined preventive interventions.