Faculty Bibliography

It is unclear if impairments in social functioning and peer relationships significantly differ across common developmental conditions such as attention-deficit/hyperactivity disorder (ADHD), oppositional defiant disorder (ODD), conduct disorder (CD), and associated callous-unemotional traits (CU traits). The current study explored sex differences and symptoms of parent- and teacher-reported psychopathology on peer relationships and prosocial behaviour in a sample of 147 referred children and adolescents (aged 5-17 years; 120 m). The results showed that increases in parent-reported ADHD Inattentive symptoms and teacher-reported ADHD Hyperactive-Impulsive symptoms, CD, ODD, and CU traits were significantly associated with peer relationship problems across sex. At the same time, teacher-reported symptoms of ODD and both parent- and teacher-reported CU traits were related to difficulties with prosocial behaviour, for both boys and girls, with sex explaining additional variance. Overall, our findings show a differential association of the most common disruptive behaviours to deficits in peer relationships and prosocial behaviour. Moreover, they highlight that different perspectives of behaviour from parents and teachers should be taken into account when assessing social outcomes in disruptive behaviours. Given the questionable separation of conduct problem-related constructs, our findings not only point out the different contribution of those aspects in explaining peer relationships and prosocial behaviour, but furthermore the variance from different informants about those aspects of conduct problems.

Background: Factors associated with successful endoscopic therapy for iatrogenic gastrointestinal luminal perforations are not well known. We aim to evaluate safety and efficacy outcomes of endoscopic closure of perforations and identify factors associated with successful closure.
Method(s): We conducted a multicenter retrospective study from 7 North American referral centers. All patients underwent attempted endoscopic closure of iatrogenic perforations. Primary outcomes evaluated were technical success and immediate clinical success (less than 14 days). Secondary outcomes were adverse events, length of hospital stay, and long term clinical success (more than 14 days). Cases were analyzed based on immediate clinical success status. Univariate and multivariable analyses were performed.
Result(s): A total of 144 iatrogenic perforation cases were reviewed. Collectively, a total of 163 endoscopic closure procedures were performed with median follow up 192 days. Technical and immediate clinical success were achieved in 122/144 cases (84.7%). Mean perforation size was 11.28 mm. Perforation occurrence: 67 during upper endoscopy (diagnostic, dilation, EMR, stent placement/removal and endoscopic US), 35 during colonoscopy (diagnostic, EMR, stent placement/removal, dilation and EUS), 17 during surgical endoscopy (ESD, POEM)and 25 during ERCP. Univariate analysis of patient demographics, index perforation procedure details, closure procedure details, and need for surgical intervention are reported in Table 1. Factors associated with immediate clinical success with respective (OR [95% CI], p<0.05)were morning timing (AM)of index procedure 3.34(1.23-9.09), fellow involvement in index procedure 0.37(0.14-0.97), antibiotic use 5.13(1.45-18.12), needle decompression 0.11(0.03-0.45), use of stent 4.63(1.02-20.88)and technical success of closure procedure 16.7(5.58-50.24). None of the perforations that occurred during surgical endoscopy cases had clinical failure of closure. Patients with immediate clinical success had shorter hospital stay (5.7 vs. 9.3 days)and achieved higher long term clinical success (96.2% vs. 7.7%)compared to those with immediate clinical failure. In the multivariable model, technical success 22.20(3.99-123.6)was the only positive predictor of immediate clinical success; while needle decompression 0.11(0.02-0.76)was the only negative predictor. The overall adverse event rate for endoscopic closure procedures was 13.9%, outlined in Table 1.
Conclusion(s): Endoscopic closure techniques are safe and effective for treatment of iatrogenic perforations. Technical success of the endoscopic closure procedure is a positive predictor of immediate clinical success. Needle decompression is negative predictor of successful closure. Patients that achieve immediate clinical success have shorter hospitalizations and higher rates of long term clinical success. [Figure presented]
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The Child Behavior Checklist (CBCL) is widely used to assess behavioral and emotional problems in youth. The CBCL Diagnostic and Statistical Manual (DSM)-Oriented Anxiety Problems subscale (CBCL-AP) was developed for the identification of DSM-IV anxiety disorders. Using data from 298 youth aged 6- to 18, the CBCL-AP scale was examined to determine its ability to differentially predict, via Receiver Operating Characteristics (ROC) analysis, the presence of (a) generalized anxiety disorder (GAD), (b) separation anxiety disorder (SAD), (c) specific phobia (SPPH), or (d) the presence of any of these disorders. Independent Evaluators (IEs) administered the Anxiety Disorders Interview Schedule for Children (ADIS-C/P) to determine the presence of an anxiety disorder. The ability of the CBCL-AP to predict to anxiety disorders was compared to the ability of the CBCL Anxious/Depressed (CBCL-A/D) scale and the seven empirically derived CBCL syndrome subscales and five DSM-Oriented subscales to predict anxiety disorder diagnoses. Results revealed that CBCL-AP scores significantly predicted all diagnoses. CBCL-A/D scores significantly predicted SAD (AUC = 0.67), GAD (AUC = 0.69), and the presence of any of the three disorders (AUC = 0.72), but not the presence of SPPH (AUC = 0.52). Although the CBCL-AP scale may not be a substitute for extensive diagnostics, it has demonstrated utility as an instrument for assessing anxiety and can serve to identify anxious youth in need of mental health services.

BACKGROUND:Caregivers of children with primary immunodeficiency disorders (PIDs) experience significant psychological distress during their child's hematopoietic cell transplantation (HCT) process. OBJECTIVES:This study aims to understand caregiver challenges and identify areas for health care system-level improvements to enhance caregiver well-being. METHODS:In this mixed-methods study caregivers of children with PIDs were contacted in August to November 2017 through online and electronic mailing lists of rare disease consortiums and foundations. Caregivers were invited to participate in an online survey assessing sociodemographic variables, the child's medical characteristics, psychosocial support use, and the World Health Organization-5 Well-Being Index. Open-ended questions about health care system improvements were included. Descriptive statistics and linear multivariate regression analyses were conducted. A modified content analysis method was used to code responses and identify emergent themes. RESULTS:Among the 80 caregiver respondents, caregivers had a median age of 34 years (range, 23-62 years) and were predominantly female, white, and married with male children given a diagnosis of severe combined immune deficiency. In the adjusted regression model lower caregiver well-being was significantly associated with lower household income and medical complications. Challenges during HCT include maintaining relationships with partners and the child's healthy sibling or siblings, managing self-care, and coping with feelings of uncertainty. Caregivers suggested several organizational-level solutions to enhance psychosocial support, including respite services, online connections to other PID caregivers, and bedside mental health services. CONCLUSIONS:Certain high-risk subpopulations of caregivers might need more targeted psychosocial support to reduce the long-term effect of the HCT experience on their well-being. Caregivers suggested several organizational-level solutions for provision of this support.

Identify correlates of nicotine dependence [lifetime (l) and ongoing (o)] in adults with attention-deficit/hyperactivity disorder (ADHD) in childhood. We conducted a 33-year prospective follow-up of boys (mean age 8) with combined type ADHD (n = 135/207, 65% original sample). Correlates of nicotine dependence in adulthood were selected from characteristics obtained in childhood and adolescence. Among selected childhood features, only immature behavior was significantly related to nicotine dependence (OR(o) = 0.29, p = 0.02), indexing decreased risk. In contrast, several adolescent variables significantly correlated (p < 0.01) with nicotine dependence at mean age 41, including alcohol substance use disorder (SUD, OR(l) = 4.97), non-alcohol SUD (OR(o) = 4.33/OR(l) = 10.93), parental antisocial personality disorder (OR(l) = 4.42), parental SUD (OR(l) = 3.58), dropped out of school (OR(l) = 2.29), impulsivity (OR(o) = 1.53/OR(l) = 1.59), hyperactivity (OR(o) = 1.38), and number of antisocial behaviors (OR(o) = 1.10/OR(l) = 1.14). Results highlight the role of adolescent psychopathology in the development of nicotine dependence, motivating prospective longitudinal efforts to better define the developmental trajectories of risk and protection.

Although pharmacological therapies are recommended as a key component in the treatment of attention-deficit hyperactivity disorder, their use continues to prompt intense debate. Despite considerable research efforts, several gaps in the knowledge base and several questions over the quality of evidence exist. Particular issues surrounding pharmacological treatments include uncertainties about long-term effectiveness and safety, safety profiles in adults, and the comparative effectiveness of different medications. In this Review, we focus on four key methodological issues for future research: (1) the use of appropriate trial designs; the need for (2) outcome measures targeting effectiveness beyond symptom control and (3) safety outcome measures; and (4) the application of clinical and administrative research databases to assess real-world outcomes. Potential solutions include increased use of randomised placebo-controlled withdrawal trials and large pharmacoepidemiological studies that use electronic health-care records on the long-term effectiveness and safety of medications. Pragmatic head-to-head randomised trials would also provide direct evidence on comparative effectiveness and safety profiles.

Autofluorescence is the emission of light by naturally occurring tissue components on the absorption of incident light. Autofluorescence within the eye is associated with several disorders, such as Age-related Macular Degeneration (AMD) which is a leading cause of central vision loss. Its pathogenesis is incompletely understood, but endogenous fluorophores in retinal tissue might play a role. Hyperspectral fluorescence microscopy of ex-vivo retinal tissue can be used to determine the fluorescence emission spectra of these fluorophores. Comparisons of spectra in healthy and diseased tissues can provide important insights into the pathogenesis of AMD. However, the spectrum from each pixel of the hyperspectral image is a superposition of spectra from multiple overlapping tissue components. As spectra cannot be negative, there is a need for a non-negative blind source separation model to isolate individual spectra. We propose a tensor formulation by leveraging multiple excitation wavelengths to excite the tissue sample. Arranging images from different excitation wavelengths as a tensor, a non-negative tensor decomposition can be performed to recover a provably unique low-rank model with factors representing emission and excitation spectra of these materials and corresponding abundance maps of autofluorescent substances in the tissue sample. We iteratively impute missing values common in fluorescence measurements using Expectation-Maximization and use L₂ regularization to reduce ill-posedness. Further, we present a framework for performing group hypothesis testing on hyperspectral images, finding significant differences in spectra between AMD and control groups in the peripheral macula. In the absence of ground truth, i.e. molecular identification of fluorophores, we provide a rigorous validation of chosen methods on both synthetic and real images where fluorescence spectra are known. These methodologies can be applied to the study of other pathologies presenting autofluorescence that can be captured by hyperspectral imaging.

BACKGROUND:Hikikomori is a severe form of social withdrawal, originally described in Japan but recently reported in other countries. Debate exists as to what extent hikikomori is viewed as a problem outside of the Japanese context. OBJECTIVE:We aimed to explore perceptions about hikikomori outside Japan by analyzing Western language content from the popular social media platform, Twitter. METHODS:We conducted a mixed methods analysis of all publicly available tweets using the hashtag #hikikomori between February 1 and August 16, 2018, in 5 Western languages (Catalan, English, French, Italian, and Spanish). Tweets were first classified as to whether they described hikikomori as a problem or a nonproblematic phenomenon. Tweets regarding hikikomori as a problem were then subclassified in terms of the type of problem (medical, social, or anecdotal) they referred to, and we marked if they referenced scientific publications or the presence of hikikomori in countries other than Japan. We also examined measures of interest in content related to hikikomori, including retweets, likes, and associated hashtags. RESULTS:A total of 1042 tweets used #hikikomori, and 656 (62.3%) were included in the content analysis. Most of the included tweets were written in English (44.20%) and Italian (34.16%), and a majority (56.70%) discussed hikikomori as a problem. Tweets referencing scientific publications (3.96%) and hikikomori as present in countries other than Japan (13.57%) were less common. Tweets mentioning hikikomori outside Japan were statistically more likely to be retweeted (P=.01) and liked (P=.01) than those not mentioning it, whereas tweets with explicit scientific references were statistically more retweeted (P=.01) but not liked (P=.10) than those without that reference. Retweet and like figures were not statistically significantly different among other categories and subcategories. The most associated hashtags included references to Japan, mental health, and the youth. CONCLUSIONS:Hikikomori is a repeated word in non-Japanese Western languages on Twitter, suggesting the presence of hikikomori in countries outside Japan. Most tweets treat hikikomori as a problem, but the ways they post about it are highly heterogeneous.

BACKGROUND:Twitter is an indicator of real-world performance, thus, is an appropriate arena to assess the social consideration and attitudes toward psychosis. OBJECTIVE:The aim of this study was to perform a mixed-methods study of the content and key metrics of tweets referring to psychosis in comparison with tweets referring to control diseases (breast cancer, diabetes, Alzheimer, and human immunodeficiency virus). METHODS:Each tweet's content was rated as nonmedical (NM: testimonies, health care products, solidarity or awareness and misuse) or medical (M: included a reference to the illness's diagnosis, treatment, prognosis, or prevention). NM tweets were classified as positive or pejorative. We assessed the appropriateness of the medical content. The number of retweets generated and the potential reach and impact of the hashtags analyzed was also investigated. RESULTS:We analyzed a total of 15,443 tweets: 8055 classified as NM and 7287 as M. Psychosis-related tweets (PRT) had a significantly higher frequency of misuse 33.3% (212/636) vs 1.15% (853/7419; P<.001) and pejorative content 36.2% (231/636) vs 11.33% (840/7419; P<.001). The medical content of the PRT showed the highest scientific appropriateness 100% (391/391) vs 93.66% (6030/6439; P<.001) and had a higher frequency of content about disease prevention. The potential reach and impact of the tweets related to psychosis were low, but they had a high retweet-to-tweet ratio. CONCLUSIONS:We show a reduced number and a different pattern of contents in tweets about psychosis compared with control diseases. PRT showed a predominance of nonmedical content with increased frequencies of misuse and pejorative tone. However, the medical content of PRT showed high scientific appropriateness aimed toward prevention.