The Toronto Adolescent and Youth Cohort Study: Study Design and Early Data Related to Psychosis Spectrum Symptoms, Functioning, and Suicidality.

BACKGROUND: Psychosis spectrum symptoms (PSSs) occur in a sizable percentage of youth and are associated with poorer cognitive performance, poorer functioning, and suicidality (i.e., suicidal thoughts and behaviors). PSSs may occur more frequently in youths already experiencing another mental illness, but the antecedents are not well known. The Toronto Adolescent and Youth (TAY) Cohort Study aims to characterize developmental trajectories in youths with mental illness and understand associations with PSSs, functioning, and suicidality. METHODS: The TAY Cohort Study is a longitudinal cohort study that aims to assess 1500 youths (age 11-24 years) presenting to tertiary care. In this article, we describe the extensive diagnostic and clinical characterization of psychopathology, substance use, functioning, suicidality, and health service utilization in these youths, with follow-up every 6 months over 5 years, including early baseline data. RESULTS: A total of 417 participants were enrolled between May 4, 2021, and February 2, 2023. Participants met diagnostic criteria for an average of 3.5 psychiatric diagnoses, most frequently anxiety and depressive disorders. Forty-nine percent of participants met a pre-established threshold for PSSs and exhibited higher rates of functional impairment, internalizing and externalizing symptoms, and suicidality than participants without PSSs. CONCLUSIONS: Initial findings from the TAY Cohort Study demonstrate the feasibility of extensive clinical phenotyping in youths who are seeking help for mental health problems. PSS prevalence is much higher than in community-based studies. Our early data support the critical need to better understand longitudinal trajectories of clinical youth cohorts in relation to psychosis risk, functioning, and suicidality.

Academic performance in Iranian medical students during the pre-clinical stage.

Background: Better understanding of factors associated with medical school performance is necessary to improve admission processes and to help students succeed in their career. This study follows a group of Iranian med students during their first 2.5 years of medical education, to evaluate their academic success in accordance with their demographic, cognitive and non-cognitive characteristics. Methods: 143 of 200 matriculants of Iran University of Medical Sciences medical school in 2010, were followed for 5 consecutive semesters of the preclinical stage. Demographic and cognitive characteristics were collected using self-administered data collection forms. The NEO Five-Factor (personality) Inventory (NEO-FFI) was used to assess participants' non-cognitive characteristics. The 5 semesters' cumulative Grade Point Average (GPA) was the measure of academic performance. Pooled t-test, one-way ANOVA, multiple linear regression and logistic regression model, and Spearman coefficients of correlation were applied in data analysis Results: There was a significant difference in participants' GPA regarding their gender (p=0.008), using privilege in National University Entrance Examination (NUEE)(p<0.0001), the number of times one has taken part in NUEE (p=0.034) and being occupied in paid jobs (p=0.01). There were no significant differences in participants' GPA regarding NEO-FFI domains. Conclusions: Females and students with a better academic performance prior to their admission in medical school had better academic records. We found no association between academic performance and personality because participants were followed through a preclinical stage where non-cognitive characteristics plays a less important role in their performance and evaluations.