Incidence and risk factors for delayed intracranial hemorrhage after mild brain injury in anticoagulated patients: a multicenter retrospective study.

Background: Anticoagulated patients with mild traumatic brain injury (mTBI) and a negative cerebral CT on admission, commonly undergo a repeated CT scan after observation in the emergency department (ED) to detect delayed intracranial hemorrhage (ICH). However, the utility of this practice is controversial, with recent evidence suggesting that the risk of delayed ICH in these patients is low. This study aims to evaluate incidence, outcomes, and risk factors of delayed ICH in patients receiving direct oral anticoagulants (DOACs) or vitamin K antagonists (VKAs) presenting to the ED with mTBI.

An online delivered running and walking group program to support low-active post-secondary students' well-being and exercise behavior during the COVID-19 pandemic: a pilot randomized controlled trial.

Objective: Examine the feasibility and acceptability of a social identity-informed, online delivered, running and walking group program to support low-active post-secondary students' exercise behavior and well-being during the COVID-19 pandemic.

Methods: A two-arm, non-blinded, parallel pilot randomized controlled trial was conducted whereby low-active post-secondary students at a Canadian university were equally randomized to an online delivered running/walking group program or an attention control condition. Primary feasibility and acceptability outcomes included program interest, study enrolment and retention, questionnaire completion, program attendance, program satisfaction, and affective exercise attitudes.

The Effect of Cognitive Fusion on Change in PTSD and Depression Symptom Severity in Veterans Engaged in Group Psychotherapy.

Cognitive fusion occurs when people experience their thoughts as literally true and allow them to dictate behavior. Fusion has been shown to be associated with increased symptoms of post-traumatic stress disorder (PTSD) and depression; however, the association between change in cognitive fusion, PTSD, and depression symptoms has been relatively uninvestigated. Our study aims to examine the associations between PTSD, depression symptoms, and cognitive fusion in Canadian veterans from pre- to post-treatment.

Predictors of changes in running and smoking identity among individuals in the Run to Quit smoking cessation program.

Objectives: Multiple health behaviour change is a viable strategy to promote health outcomes. An example is the use of running behaviour to support smoking cessation in the group-mediated Run to Quit program. On the basis that changes in running and smoking identity were related to changes in running and smoking behaviour among individuals in the Run to Quit program, the purpose of this study was to extend these findings by examining key predictors of change in both running and smoking identity.

Effects of 12 Weeks of At-Home, Application-Based Exercise on Health Care Workers' Depressive Symptoms, Burnout, and Absenteeism: A Randomized Clinical Trial.

Importance: During the COVID-19 pandemic, health care workers (HCWs) reported a significant decline in their mental health. One potential health behavior intervention that has been shown to be effective for improving mental health is exercise, which may be facilitated by taking advantage of mobile application (app) technologies.

Objective: To determine the extent to which a 12-week app-based exercise intervention can reduce depressive symptoms, burnout, and absenteeism in HCWs, compared with a wait list control condition.

Simultaneous estimation of the intermediate correlation matrix for arbitrary marginal densities.

A popular approach to the simulation of multivariate, non-normal data in the social sciences is to define a multivariate normal distribution first, and then alter its lower-dimensional marginals to achieve the shape of the distribution intended by the researchers. A consequence of this process is that the correlation structure is altered, so further methods are needed to specify an intermediate correlation matrix in the multivariate normal distribution step. Most of the techniques available in the literature estimate this intermediate correlation matrix bivariately (i.

Over-reaching with causality language in neurodevelopmental infant research: A methodological literature review.

Background: A methodological review of 78 empirical articles focusing on the neurodevelopmental outcomes of at-risk infants was conducted.

Aims: To examine ways language and terminology are used to describe methods, present results, and/or state conclusions in studies published during 1994-2005, a decade reflecting major advances in neurodevelopmental research and in medical intervention. More specifically, to investigate to what extent the design of the study and the language in the results section aligned in regard to causality.

Psychological needs and exercise behaviour: a comparison of two psychological needs models.

Objective: Psychological need satisfaction, from a self-determination theory (SDT) perspective, has been applied extensively to understand predictors of exercise behaviour. Dweck proposed a psychological needs framework that includes basic needs (optimal predictability, competence, acceptance), compound needs derived from combinations of basic needs (self-esteem/status, trust, control), and a superordinate compound need for self-coherence that includes identity and meaning. The purpose was to examine whether psychological needs operationalized within Dweck's model account for variance in exercise behaviour in ways that the SDT model does not.

Continuous-Time Modeling of the Bidirectional Relationship Between Incidental Affect and Physical Activity.

Background: Previous research suggests that there is a bidirectional relationship between incidental affect (i.e., how people feel in day-to-day life) and physical activity behavior.

Accuracy of mixture item response theory models for identifying sample heterogeneity in patient-reported outcomes: a simulation study.

Purpose: Mixture item response theory (MixIRT) models can be used to uncover heterogeneity in responses to items that comprise patient-reported outcome measures (PROMs). This is accomplished by identifying relatively homogenous latent subgroups in heterogeneous populations. Misspecification of the number of latent subgroups may affect model accuracy.

How to think clearly about the central limit theorem.

The central limit theorem (CLT) is one of the most important theorems in statistics, and it is often introduced to social sciences researchers in an introductory statistics course. However, the recent replication crisis in the social sciences prompts us to investigate just how common certain misconceptions of statistical concepts are. The main purposes of this article are to investigate the misconceptions of the CLT among social sciences researchers and to address these misconceptions by clarifying the definition and properties of the CLT in a manner that is approachable to social science researchers.

Analysis of dynamic psychological processes to understand and promote physical activity behaviour using intensive longitudinal methods: a primer.

Physical activity behaviour displays temporal variability, and is influenced by a range of dynamic psychological processes (e.g., affect) and shaped by various co-occurring events (e.

Differential Item Functioning of the Center for Epidemiologic Studies Depression Scale Among Chinese Adolescents.

This study examined differential item functioning (DIF) in the Center for Epidemiologic Studies Depression Scale (CES-D) between Chinese and White adolescents (aged 13 to 17 years) living in Canada. A series of ordinal logistic regressions were used to test for uniform and non-uniform DIF on items in the CES-D. The DIF analyses identified non-uniform DIF for Item 7 ("I felt that everything I did was an effort").

An Examination of Dweck's Psychological Needs Model in Relation to Exercise-Related Well-Being.

This two-part study examined Dweck's psychological needs model in relation to exercise-related well-being and particularly focused on the basic need for optimal predictability and compound needs for identity and meaning. In Part 1 (N = 559), using exploratory factor analysis, scores derived from items assessing optimal predictability (prediction of affect and instrumental utility in exercise) were empirically distinct from scores derived from items assessing competence, relatedness, and autonomy. In Part 2, participants from Part 1 (N = 403) completed measures of exercise-related well-being 4 weeks after baseline assessment.

"To Tech or Not to Tech?" A Critical Decision-Making Framework for Implementing Technology in Sport.

The current technological age has created exponential growth in the availability of technology and data in every industry, including sport. It is tempting to get caught up in the excitement of purchasing and implementing technology, but technology has a potential dark side that warrants consideration. Before investing in technology, it is imperative to consider the potential roadblocks, including its limitations and the contextual challenges that compromise implementation in a specific environment.

The Role of Item Distributions on Reliability Estimation: The Case of Cronbach's Coefficient Alpha.

Simulations concerning the distributional assumptions of coefficient alpha are contradictory. To provide a more principled theoretical framework, this article relies on the Fréchet-Hoeffding bounds, in order to showcase that the distribution of the items play a role on the estimation of correlations and covariances. More specifically, these bounds restrict the theoretical correlation range [-1, 1] such that certain correlation structures may be unfeasible.

A Propensity Score Method for Investigating Differential Item Functioning in Performance Assessment.

This study introduces a novel differential item functioning (DIF) method based on propensity score matching that tackles two challenges in analyzing performance assessment data, that is, continuous task scores and lack of a reliable internal variable as a proxy for ability or aptitude. The proposed DIF method consists of two main stages. First, propensity score matching is used to eliminate preexisting group differences before the test, ideally creating equivalent groups as in a randomized experimental study.

Effects of Group-Based Exercise on Flourishing and Stigma Consciousness among Older Adults: Findings from a Randomised Controlled Trial.

Background: To examine the extent to which group-based exercise programs, informed by self-categorisation theory, result in improvements in psychological flourishing and reductions in age- and gender-related stigma consciousness among older adults.

Methods: In the study, older adults (N = 485, ≥ 65 years) were randomised to similar age same gender (SASG), similar age mixed gender (SAMG), or "standard" mixed age mixed gender (MAMG) group-based exercise programs. Flourishing and stigma consciousness were assessed on six occasions during the 24-week intervention and represented secondary trial outcomes.

A Measurement Is a Choice and Stevens' Scales of Measurement Do Not Help Make It: A Response to Chalmers.

Chalmers recently published a critique of the use of ordinal proposed in Zumbo et al. as a measure of test reliability in certain research settings. In this response, we take up the task of refuting Chalmers' critique.

An ecological view of measurement: focus on multilevel model explanation of differential item functioning.

Background: The 3rd Regional Comparative and Explanatory Study reports, analyses and compares academic results in mathematics, sciences, and reading for 15 Latin American countries. Validity is the foundation of a testing procedure, and the process of validation is important to the overall success of educational assessment as a whole. This methodological study deals specifically with an ecological point of view which includes and situates the person, process, context, and time of the testing situation.

Getting the most out of intensive longitudinal data: a methodological review of workload-injury studies.

Objectives: To systematically identify and qualitatively review the statistical approaches used in prospective cohort studies of team sports that reported intensive longitudinal data (ILD) (>20 observations per athlete) and examined the relationship between athletic workloads and injuries. Since longitudinal research can be improved by aligning the (1) theoretical model, (2) temporal design and (3) statistical approach, we reviewed the statistical approaches used in these studies to evaluate how closely they aligned these three components.

Design: Methodological review.

The Development and Psychometric Properties of the Multidimensional Assessment of Teamwork in Sport.

The purpose of this research was to develop a questionnaire to assess the multidimensional construct of teamwork in sport and to examine various aspects of validity related to that instrument. A preliminary questionnaire was first created, and feedback on this instrument was then obtained from a sample of team-sport athletes (n = 30) and experts in sport psychology (n = 8). A modified version of the questionnaire was then completed by 607 athletes from 48 teams, and 5 multilevel confirmatory factor analyses were conducted to examine the structural properties of data derived from this instrument.

On the solution multiplicity of the Fleishman method and its impact in simulation studies.

The Fleishman third-order polynomial algorithm is one of the most-often used non-normal data-generating methods in Monte Carlo simulations. At the crux of the Fleishman method is the solution of a non-linear system of equations needed to obtain the constants to transform data from normality to non-normality. A rarely acknowledged fact in the literature is that the solution to this system is not unique, and it is currently unknown what influence the different types of solutions have on the computer-generated data.