Gender differences in a wide range of trauma symptoms after victimization and accidental traumas: a cross-sectional study in a clinical setting.

Background: There are large gender differences in PTSD prevalence. Gender differences in a wide range of trauma symptoms including disturbances in self-organization have not been extensively researched. Objective: To explore gender differences in a wide range of trauma symptoms by comparing victimization trauma (VT) with accidental trauma (AT). Method: A cross-sectional study of 110 traumatized patients attending a mental health outpatient clinic in Oslo, Norway (38.2% men, Mage = 40.4, 40% ethnic Norwegians). The trauma was categorized as VT or AT based on the Life Events Checklist. The Structured Clinical Interview for DSM-IV-PTSD-module and Structured Interview for Disorders of Extreme Stress Not-Otherwise-Specified (DESNOS) assessed a wide range of trauma symptoms. First, we examined gender differences within the trauma categories, then MANCOVA for an adjusted two-by-two between-groups analysis. Results: Among VT patients, men reported more symptoms of alteration of negative self-perception (p = .02, ES = 0.50) and alteration in systems of meaning (p < .01, ES = 1.04). Within the AT group, women reported more symptoms of affect and impulses (p = .01, ES = 0.94). The VT-AT difference was significantly higher in men in intrusion (p < .01, η2 = 0.04), affect and impulses (p < .01, η2 = 0.12), negative self-perception (p < .01, η2 = 0.11), difficulty in relations (p = .01, η2 = 0.10) and alterations in systems of meaning (p = .01, η2 = 0.14). Conclusion: Comparing the VT-AT differences between the genders, men with VT had relatively more symptoms of intrusion, self-organization, identity, ideology/meaning, cognition, and relations difficulties. Effect sizes were moderate to large. Men may be relatively more vulnerable to VT than AT, while women may be more equally affected by VT and AT. Acknowledging possible gender differences in a wider range of trauma symptoms depending on trauma category may have clinical benefits.

Antecedentes: Existen grandes diferencias de género en la prevalencia del trastorno de estrés postraumático. Las posibles diferencias de género en una amplia gama de síntomas de trauma, incluidas las alteraciones en la autoorganización, no se han investigado exhaustivamente.Objetivo: Explorar las diferencias de género en una amplia gama de síntomas de trauma comparando el trauma de victimización (TV) con los traumas accidentales (TA).Método: Un estudio transversal de 110 pacientes traumatizados que asistían a una clínica ambulatoria de salud mental en Oslo, Noruega (38,2% hombres, edad promedio = 40,4, 40% de etnia noruega). El trauma primario se clasificó como TV o TA según la Lista de verificación de eventos vitales. La Entrevista clínica estructurada para el módulo DSM-IV-TEPT y la Entrevista estructurada para trastornos de estrés extremo no especificado (DESNOS en su sigla en inglés) evaluaron una amplia gama de síntomas de trauma, principalmente analizando puntuaciones brutas de síntomas. Primero, examinamos las diferencias de género dentro de las categorías de trauma. Luego usamos MANCOVA para un análisis ajustado de dos por dos entre grupos.Resultados: Entre los afectados por TV, los hombres reportaron más síntomas de alteración de la autopercepción negativa (p = .02, ES = 0.50) y alteración en los sistemas de significado (p < .01, ES = 1.04). Dentro del grupo TA, las mujeres informaron más síntomas de afecto e impulsos (p = 0.01, ES = 0,94). La diferencia TV-TA fue significativamente mayor en los hombres en uno de los tres grupos de síntomas de TEPT, intrusión (p < .01, η2 = 0.04), y cuatro de seis dominios de DESNOS, afecto e impulsos (p < .01, η2 = 0.12), autopercepción negativa (p < .01, η2 = 0.11), dificultad en las relaciones con los demás (p = .01, η2 = 0.10) y alteraciones en los sistemas de significado (p = .01, η2 = 0.14).Conclusión: Al comparar las diferencias de TV y TA entre los géneros, los hombres con TV tenían relativamente más síntomas de intrusión, autoorganización, identidad, ideología/significado, cognición y dificultades en las relaciones. Los tamaños del efecto fueron de moderados a grandes. Los hombres pueden ser relativamente más vulnerables al TV que al TA, mientras que las mujeres pueden verse más igualmente afectadas por el TV y el TA. Reconocer las posibles diferencias de género en una gama más amplia de síntomas de trauma según la categoría del trauma puede tener beneficios clínicos.

Machine Learning in Aging: An Example of Developing Prediction Models for Serious Fall Injury in Older Adults.

BACKGROUND: Advances in computational algorithms and the availability of large datasets with clinically relevant characteristics provide an opportunity to develop machine learning prediction models to aid in diagnosis, prognosis, and treatment of older adults. Some studies have employed machine learning methods for prediction modeling, but skepticism of these methods remains due to lack of reproducibility and difficulty in understanding the complex algorithms that underlie models. We aim to provide an overview of two common machine learning methods: decision tree and random forest. We focus on these methods because they provide a high degree of interpretability. METHOD: We discuss the underlying algorithms of decision tree and random forest methods and present a tutorial for developing prediction models for serious fall injury using data from the Lifestyle Interventions and Independence for Elders (LIFE) study. RESULTS: Decision tree is a machine learning method that produces a model resembling a flow chart. Random forest consists of a collection of many decision trees whose results are aggregated. In the tutorial example, we discuss evaluation metrics and interpretation for these models. Illustrated using data from the LIFE study, prediction models for serious fall injury were moderate at best (area under the receiver operating curve of 0.54 for decision tree and 0.66 for random forest). CONCLUSIONS: Machine learning methods offer an alternative to traditional approaches for modeling outcomes in aging, but their use should be justified and output should be carefully described. Models should be assessed by clinical experts to ensure compatibility with clinical practice.

High prevalence of unintentional injuries and socio-psychological correlates among school-going adolescents in Timor-Leste.

OBJECTIVES: The study aimed to report on the prevalence and socio-psychological correlates of non-fatal injury among school-going adolescents in Timor-Leste. METHODS: Cross-sectional data from the 2015 Timor-Leste "Global School-based Health Survey (GSHS)" included 3,704 school children (median age 16 years, interquartile range 3) that were representative of all students in secondary school, excluding grade 12. RESULTS: The proportion of participants with one or multiple serious injuries in the past year was 70.0% (40.6% once, 17.2% two-three times and 12.2% 4-12 times). The most frequent cause of the reported injury were "I fell" (33.8%) and motor vehicle (10.2%) and the most common type of injury was "a broken bone or dislocated joint" (7.8%) and "cut, puncture or stab wound" (6.7%). In adjusted multinomial logistic regression analysis, suicide attempt was associated with one injury, and truancy was associated with both one and multiple injury. Current tobacco use, lifetime cannabis use, soft drink consumption, and loneliness were associated with multiple injuries. CONCLUSIONS: Several variables were identified that could be targeted in injury prevention programmes in this school population.

Post-traumatic stress symptoms and cognition in children exposed to motor vehicle accident trauma.

Research investigating the cognition of children exposed to non-familial trauma is scarce and the effects of post-traumatic stress symptoms in this population remain unclear. Thus, this research aimed to investigate the cognition of children exposed to motor vehicle accidents given the high incidence of this trauma globally. It was hypothesized that children with post-traumatic stress symptoms (PTSS; i.e., children with subthreshold or a full diagnosis of PTSD; n = 6) would perform significantly worse on cognitive measures compared to children exposed to trauma only (TO; i.e., children with very minimal or no PTSS; n = 10) and a healthy control group (n = 19). Analyses showed children with PTSS demonstrated significantly poorer perceptual reasoning F(2,32) = 7.21, p = .01, partial η2 = .31; verbal learning F(2,32) = 3.87, p = .05, partial η2 = .20; and delayed verbal memory F(2,32) = 4.40, p = .05, partial η2 = .22, compared to HCs. The magnitude of the differences between the groups was large. Differences in immediate verbal recall, executive functioning, and verbal intellectual abilities were moderate to large in magnitude, with the PTSS group performing worse than both groups, but these findings did not reach significance. Overall findings from this study provide further support for the notion that children exposed to non-familial trauma with significant PTSS display cognitive difficulties compared to healthy children.

An App-Based Intervention for Caregivers to Prevent Unintentional Injury Among Preschoolers: Cluster Randomized Controlled Trial.

BACKGROUND: App-based interventions have the potential to reduce child injury in countries with limited prevention resources, but their effectiveness has not been rigorously examined. OBJECTIVE: This study aimed to assess the effectiveness of an app-based intervention for caregivers of preschoolers to prevent unintentional injury among Chinese preschoolers. METHODS: A 6-month cluster randomized controlled trial was conducted from December 2017 to June 2018. Recruitment was conducted through preschools, which were randomly allocated to either the control group (ie, app-based parenting education excluding unintentional injury prevention) or the intervention group (ie, app-based parenting education including unintentional injury prevention). A total of 2920 caregivers of preschoolers aged 3-6 years from 20 preschools in Changsha, China, were recruited offline through the schools. The primary outcome was unintentional injury incidences among preschoolers in the past 3 months; this measure was assessed through an online caregiver-report at the baseline visit and at 3-month and 6-month follow-up visits. Secondary outcome measures included caregivers' self-reported attitudes and behaviors concerning child supervision during the last week. Generalized estimating equations (GEEs) were used to assess the effectiveness of the app-based intervention on responses at 3 and 6 months after adjusting for sociodemographic variables, baseline level of the outcome variable, and engagement with interventions in the assigned group. All analyses were intention-to-treat. A per-protocol sensitivity analysis was also conducted. RESULTS: In total, 1980 of the 2920 caregivers completed the study. The mean age of participants was 32.0 years (SD 5.5) and 68.99% (1366/1980) of them were female. During the 6-month follow-up visit, unintentional injury incidence did not change significantly in either group: incidence in the intervention group went from 8.76% (94/1073) to 8.11% (87/1073), P=.59; incidence in the control group went from 9.4% (85/907) to 7.5% (69/907), P=.15. The changes did not differ between the groups (odds ratio [OR] 1.14, 95% CI 0.80-1.62). Changes in the average score in attitude concerning unintentional injury prevention were also similar between the groups (B .05, 95% CI -0.03 to 0.13). Changes in unintentional injury prevention behaviors were greater in the intervention group than in the control group after the intervention (B .87, 95% CI 0.33-1.42). Analyses of individual injury prevention behaviors showed that the intervention reduced three risky behaviors: unsafe feeding of children (OR 0.73, 95% CI 0.60-0.89); incorrectly placing children in cars (OR 0.73, 95% CI 0.57-0.93); and allowing children to ride bicycles, electric bicycles, or motorcycles unsupervised (OR 0.80, 95% CI 0.64-0.99). The intervention also improved scores on three safety-focused behaviors: testing water temperature before giving children a bath (OR 1.26, 95% CI 1.05-1.52); properly storing sharp objects (OR 1.24, 95% CI 1.01-1.52); and safely storing medicines, detergents, and pesticides (OR 1.24, 95% CI 1.02-1.51). CONCLUSIONS: The app-based intervention did not reduce unintentional injury incidence among preschoolers but significantly improved caregivers' safety behaviors. This app-based intervention approach to improve caregiver behaviors surrounding child injury risk offers promise to be modified and ultimately disseminated broadly. TRIAL REGISTRATION: Chinese Clinical Trial Registry ChiCTR-IOR-17010438; http://www.chictr.org.cn/showproj.aspx?proj=17376 (Archived by WebCite at http://www.webcitation.org/75jt17X84). INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): RR2-10.1186/s12889-018-5790-1.

Needs Analysis for a Parenting App to Prevent Unintentional Injury in Newborn Babies and Toddlers: Focus Group and Survey Study Among Chinese Caregivers.

BACKGROUND: With the growing popularity of mobile health technology, app-based interventions delivered by smartphone have become an increasingly important strategy toward injury prevention. OBJECTIVE: This study aimed to develop a framework supporting the design of an app-based intervention to prevent unintentional injury, targeted for caregivers of Chinese children aged 0 to 6 years. METHODS: A theory-based mixed-method study, including focus groups and Web-based quantitative survey, was performed. Adult caregivers who care for children aged 0 to 6 years and own a smartphone were recruited into 2 sequential stages of research. First, focus groups were conducted among the caregivers at community health care centers and preschools from December 2015 to March 2016. Focus groups (8-10 participants per group) explored awareness, experiences, and opinions of caregivers toward using an app to prevent unintentional injury among children. Second, based on the focus groups findings, a Web-based quantitative survey was designed and distributed to caregivers in November 2016; it collected information on specific needs for the app-based intervention. Thematic analysis and quantitative descriptive analyses were performed. RESULTS: In total, 12 focus groups were completed, involving 108 caregivers. Most participants expressed a strong desire to learn knowledge and skills about unintentional child injury prevention and held positive attitudes toward app-based interventions. Participants expressed multiple preferences concerning the app-based intervention, including their contents, functions, interactive styles, installation and registration logistics, and privacy protection and information security. Following the focus groups, 1505 caregivers completed a WeChat-based quantitative survey, which generated roughly similar results to those of focus groups and added numerical metrics concerning participants' preferences on what to learn, when to learn it, and how to learn it. A detailed framework was established involving 5 components: (1) content design, (2) functional design, (3) interactive style, (4) installation and registration logistics, and (5) privacy protection and information security, and 15 specific requirements. CONCLUSIONS: We developed a framework that can be used as a guide to design app-based interventions for parents and caregivers, specifically for unintentional injury prevention of children aged 0 to 6 years.

Long-Term Posttraumatic Stress Following Accidental Injury in Children and Adolescents: Results of a 2-4-Year Follow-Up Study.

In this study, we determined the long-term prevalence of posttraumatic stress disorder (PTSD) in children and adolescents after accidental injury and gained insight into factors that may be associated with the occurrence of PTSD. In a prospective longitudinal study, we assessed diagnosed PTSD and clinically significant self-reported posttraumatic stress symptoms (PTSS) in 90 children (11-22 years of age, 60% boys), 2-4 years after their accident (mean number of months 32.9, SD 6.6). The outcome was compared to the first assessment 3 months after the accident in 147 children, 8-18 years of age. The prevalence of PTSD was 11.6% at first assessment and 11.4% at follow-up. Children with PTSD or PTSS reported significantly more permanent physical impairment than children without. Children who completed psychotherapy had no symptoms or low levels of symptoms at follow-up. Given the long-term prevalence of PTSD in children following accidents, we recommend systematic monitoring of injured children. The role of possible associated factors in long-term PTSS needs further study.

The Association Between Acute Pain and Posttraumatic Stress Symptoms in Children and Adolescents 3 Months After Accidental Injury.

Previous research suggests that acute pain is a risk factor for later posttraumatic stress symptoms (PTSS). In a prospective cohort study, we examined the association between acute pain from accidental injury and PTSS in children and adolescents, taking into account factors potentially related to pain or posttraumatic stress. Participants were 135 children and adolescents, 8-18 years old. We measured the worst experienced pain since the accident took place with a visual analogue scale. Three months after the accident, posttraumatic stress was assessed with a self-report measure. We found a positive association between acute pain and posttraumatic stress. The amount of pain was negatively associated with injury severity in girls and positively associated with the presence of an extremity fracture in boys. In children who reported severe pain, this pain was significantly associated with PTSS and may account for around 10% of the variance in the severity of PTSS. Although the experience of pain is subjective, our study indicates that severe pain is associated with the severity of later PTSS. Timely management of pain according to acute pain protocols in all phases and disciplines after accidental injury is therefore recommended.

Maternal mental health and childhood injury: evidence from the UK Millennium Cohort Study.

OBJECTIVE: We assessed whether maternal mental health problems increased rates for child injury during the preschool years and mid-childhood, and the extent to which associations could be accounted for by a range of potential explanatory factors. DESIGN: We analysed the UK Millennium Cohort Study, a nationally representative sample with data collected throughout childhood. Multinomial regression was used to investigate whether two measures of maternal mental health (diagnosed depression/anxiety and psychological distress) were associated with subsequent childhood injury. Models adjusted for sociodemographics, parenting and child externalising behaviours. MAIN OUTCOME MEASURE: Maternal report of unintentional injuries (none, 1, 2+) recorded at three data collection periods (3-5 years; 5-7 years; 7-11 years). RESULTS: The analytic sample comprised n=9240 families who participated 3-11 years with complete data on exposures and outcomes (multiply imputing missing covariates). Exposure to maternal mental health problems was associated with increased rates of subsequent childhood injuries. Associations attenuated after adjustment for potential explanatory factors, although they remained elevated. For example, high maternal distress was associated with injuries 3-5 years (adjusted relative risk ratio (aRRR): 1 injury=1.18, 95% CI 0.86 to 1.61; 2+ injuries=2.22, 95% CI 1.22 to 4.02); injuries 5-7 years (aRRR: 1 injury=1.31, 95% CI 0.97 to 1.76; 2+ injuries=1.84, 95% CI 1.09 to 3.09); and injuries 7-11 years (aRRR: 1 injury=1.03, 95% CI 0.81 to 1.31; 2+ injuries=1.33, 95% CI 0.97 to 1.81). CONCLUSIONS: Children exposed to mothers with mental health problems had higher rates of childhood injury than those not exposed. If further investigation of this association suggests causality then it will be important to test measures that address mothers' mental health issues with a view to reducing injuries among their children.