scholarly journals Effects of prior deployments and perceived resilience on anger trajectories of combat-deployed soldiers

2021 ◽  
pp. 1-10
Author(s):  
Laura Campbell-Sills ◽  
Jason D. Kautz ◽  
Karmel W. Choi ◽  
James A. Naifeh ◽  
Pablo A. Aliaga ◽  
...  
Keyword(s):  
Protective Effect ◽  
Growth Models ◽  
Mixed Effects ◽  
Us Army ◽  
Deployment Cycle ◽  
Army Soldiers ◽  
Problematic Anger ◽  
First Time ◽  
Best Fit ◽  
Over Time

Abstract Background Problematic anger is frequently reported by soldiers who have deployed to combat zones. However, evidence is lacking with respect to how anger changes over a deployment cycle, and which factors prospectively influence change in anger among combat-deployed soldiers. Methods Reports of problematic anger were obtained from 7298 US Army soldiers who deployed to Afghanistan in 2012. A series of mixed-effects growth models estimated linear trajectories of anger over a period of 1–2 months before deployment to 9 months post-deployment, and evaluated the effects of pre-deployment factors (prior deployments and perceived resilience) on average levels and growth of problematic anger. Results A model with random intercepts and slopes provided the best fit, indicating heterogeneity in soldiers' levels and trajectories of anger. First-time deployers reported the lowest anger overall, but the most growth in anger over time. Soldiers with multiple prior deployments displayed the highest anger overall, which remained relatively stable over time. Higher pre-deployment resilience was associated with lower reports of anger, but its protective effect diminished over time. First- and second-time deployers reporting low resilience displayed different anger trajectories (stable v. decreasing, respectively). Conclusions Change in anger from pre- to post-deployment varies based on pre-deployment factors. The observed differences in anger trajectories suggest that efforts to detect and reduce problematic anger should be tailored for first-time v. repeat deployers. Ongoing screening is needed even for soldiers reporting high resilience before deployment, as the protective effect of pre-deployment resilience on anger erodes over time.

scholarly journals Development of character strengths across the deployment cycle among U.S. Army soldiers

2020 ◽  
Author(s):  
William J. Chopik ◽  
Whitney L. Kelley ◽  
Loryana L. Vie ◽  
Jeewon Oh ◽  
Douglas G. Bonett ◽  
...  
Keyword(s):  
Character Development ◽  
Character Strengths ◽  
Deployment Cycle ◽  
Post Traumatic Growth ◽  
Post Traumatic ◽  
Army Soldiers ◽  
First Time ◽  
Over Time ◽  
Positive Character

Objective: Despite a narrative of post-traumatic growth and resilience, research reliably demonstrating positive character development following adversity has proved elusive. In the current study, we examined changes in character strengths in Army soldiers deploying for the first time. The sample was comprised of 212,386 Army soldiers (Mage = 26.5 years old, SD = 7.13; 70.8% White) who were deploying for the first time. Character strengths were assessed once before and up to three times following soldiers’ return from deployment. We found evidence for two classes of change—a resilient class (“stable high”) and a declining class (“persistent low”). Most soldiers were resilient—they had high levels of character strengths prior to deployment and changed very little across the deployment cycle. Approximately 40% of soldiers started with lower character and experienced initial declines post-deployment, from which they experienced no more than small gains over time. Character strengths were highly stable across the deployment transition but some soldiers experienced initial declines from which they never fully rebounded. The findings are discussed in the context of the mechanisms that drive character development.

A Descriptive Study of US Army Soldiers Referred to, Evaluated By And Enrolled In The Army Substance Abuse Program, 1988-2003

2006 ◽  
Author(s):  
Ilyssa E. Hollander ◽  
Nicole S. Bell ◽  
Margaret Phillips ◽  
Paul J. Amoroso ◽  
Les MacFarling
Keyword(s):  
Substance Abuse ◽  
Descriptive Study ◽  
Us Army ◽  
Substance Abuse Program ◽  
Army Soldiers

Soil and Stream Water Chemistry During Spring Snowmelt

1992 ◽  
Vol 23 (1) ◽  
pp. 13-26 ◽  
Author(s):  
W. H. Hendershot ◽  
L. Mendes ◽  
H. Lalande ◽  
F. Courchesne ◽  
S. Savoie
Keyword(s):  
Stream Water ◽  
Base Cations ◽  
Stream Chemistry ◽  
Stream Water Chemistry ◽  
The Matrix ◽  
Adsorption Desorption ◽  
The Relationship ◽  
Best Fit ◽  
Spring Snowmelt ◽  
Over Time

In order to determine how water flowpath controls stream chemistry, we studied both soil and stream water during spring snowmelt, 1985. Soil solution concentrations of base cations were relatively constant over time indicating that cation exchange was controlling cation concentrations. Similarly SO4 adsorption-desorption or precipitation-dissolution reactions with the matrix were controlling its concentrations. On the other hand, NO3 appeared to be controlled by uptake by plants or microorganisms or by denitrification since their concentrations in the soil fell abruptly as snowmelt proceeded. Dissolved Al and pH varied vertically in the soil profile and their pattern in the stream indicated clearly the importance of water flowpath on stream chemistry. Although Al increased as pH decreased, the relationship does not appear to be controlled by gibbsite. The best fit of calculated dissolved inorganic Al was obtained using AlOHSO4 with a solubility less than that of pure crystalline jurbanite.

Multifinality, equifinality, and fanning: Developmental concepts and statistical implications

2021 ◽  
pp. 016502542110204
Author(s):  
Ben Hinnant ◽  
John Schulenberg ◽  
Justin Jager
Keyword(s):  
Interindividual Variability ◽  
Growth Models ◽  
Practical Importance ◽  
Simulated Data ◽  
Developmental Changes ◽  
Effect Sizes ◽  
Over Time ◽  
Developmental Window

Multifinality, equifinality, and fanning are important developmental concepts that emphasize understanding interindividual variability in trajectories over time. However, each concept implies that there are points in a developmental window where interindividual variability is more limited. We illustrate the multifinality concept under manipulations of variance in starting points, using both normal and zero-inflated simulated data. Results indicate that standardized estimates and effect sizes are inflated when predicting components of growth models with limited interindividual variance, which could lead to overinterpretation of the practical importance of findings. Conceptual implications are considered and recommendations are provided for evaluating developmental changes in common situations that researchers may encounter.

Activities and risk factors associated with fall-related injuries among US Army soldiers

2020 ◽  
pp. bmjmilitary-2020-001564
Author(s):  
Raina D Brooks ◽  
T Grier ◽  
B H Jones ◽  
M C Chervak
Keyword(s):  
Risk Factors ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Physically Active ◽  
Us Army ◽  
Factors Associated ◽  
Younger Age ◽  
Near Falls ◽  
Independent Risk Factors ◽  
Army Soldiers

IntroductionFalls/near falls are the second leading cause of hospitalisation and outpatient visits among US Army soldiers. While numerous studies have evaluated fall-related or near fall-related injuries among elderly adults, few have evaluated this association among young adults. The objective of this study is to describe the characteristics and risk factors associated with fall-related or near fall-related injuries among male US Army soldiers.MethodsThis is a cross-sectional study of male US Army Airborne Division soldiers (n=5187). Electronic surveys captured demographic, lifestyle, physical training (PT), fitness and injury data during spring/summer of 2016. Multiple logistic regression was used to identify independent risk factors of fall-related or near fall-related injuries, adjusting for potential confounders.ResultsPrimary findings indicated that activities and risk factors associated with fall-related or near fall-related injuries among soldiers included younger age (≤35 years), holding a job that required minimal lifting activities, slower 2-mile run times and not running during personal PT.ConclusionsThe findings from this study suggest that male US Army soldiers and other physically active men may benefit from (1) obtaining and/or maintaining higher aerobic endurance and muscular strength, and (2) training focused on preventing fall-related injuries during PT, road marching and sports/recreational activities. Moreover, prevention strategies and education should further target younger soldiers (≤35 years old), as younger age is not modifiable.

scholarly journals Prolonged efficacy of pembrolizumab in a patient presenting a multi-treated metastatic hepatocholangiocarcinoma

2020 ◽  
Vol 13 ◽  
pp. 175628482093518 ◽  
Author(s):  
Angélique Saint ◽  
Maxime Benchetrit ◽  
Sébastien Novellas ◽  
Denis Ouzan ◽  
Alexander Tuan Falk ◽  
...  
Keyword(s):  
Therapeutic Strategy ◽  
Complete Response ◽  
It Management ◽  
Tumor Control ◽  
Line Treatment ◽  
Viral Hepatitis C ◽  
Programmed Cell Death 1 ◽  
First Time ◽  
Inhibitor Treatment ◽  
Over Time

Introduction: Hepatocholangiocarcinoma (HCC-ICC) is a rare tumor presenting the histologic characteristics of both hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (ICC). As there is no consensus on it management, the therapeutic strategy rests on the specific treatments for HCC or ICC. Programmed cell death 1 (PD-1) inhibitors showed encouraging results in the second line treatment of HCC after sorafenib but it efficacy in HCC-ICC has never been reported. Methods and results: We present the case of a 72-year-old male patient treated for metastatic HCC-ICC due to a viral hepatitis C cirrhosis in progression after two lines of treatment. Tumor was characterized by a PDL-1 status of 85%. Patient received pembrolizumab at doses of 200 mg every 21 days by intravenous infusion. After one injection he was presented an immediate clinical benefit, a partial response was observed after two months of treatment and a complete response two months later. This response was maintained over time along with toxicity-free tumor control after 18 months treatment. Conclusion: To our knowledge, we reported for the first time the efficacy of a PD1 inhibitor treatment in a patient presenting metastatic HCC-ICC due to viral cirrhosis and overexpressing PDL-1 after failure of two lines of treatment.

scholarly journals The power of modelling pulsatile profiles

2021 ◽  
Author(s):  
Michiel J. van Esdonk ◽  
Jasper Stevens
Keyword(s):  
Growth Hormone ◽  
Statistical Power ◽  
Quantitative Description ◽  
Mixed Effects ◽  
Post Dose ◽  
Deconvolution Analysis ◽  
Linear Mixed Effects ◽  
Non Linear ◽  
Over Time ◽  
Modelling Approach

AbstractThe quantitative description of individual observations in non-linear mixed effects models over time is complicated when the studied biomarker has a pulsatile release (e.g. insulin, growth hormone, luteinizing hormone). Unfortunately, standard non-linear mixed effects population pharmacodynamic models such as turnover and precursor response models (with or without a cosinor component) are unable to quantify these complex secretion profiles over time. In this study, the statistical power of standard statistical methodology such as 6 post-dose measurements or the area under the curve from 0 to 12 h post-dose on simulated dense concentration–time profiles of growth hormone was compared to a deconvolution-analysis-informed modelling approach in different simulated scenarios. The statistical power of the deconvolution-analysis-informed approach was determined with a Monte-Carlo Mapped Power analysis. Due to the high level of intra- and inter-individual variability in growth hormone concentrations over time, regardless of the simulated effect size, only the deconvolution-analysis informed approach reached a statistical power of more than 80% with a sample size of less than 200 subjects per cohort. Furthermore, the use of this deconvolution-analysis-informed modelling approach improved the description of the observations on an individual level and enabled the quantification of a drug effect to be used for subsequent clinical trial simulations.

Neighbourhood places, collective efficacy and crime: A longitudinal perspective

Urban Studies ◽  
2021 ◽  
pp. 004209802110088
Author(s):  
Renee Zahnow ◽  
Jonathan Corcoran ◽  
Anthony Kimpton ◽  
Rebecca Wickes
Keyword(s):  
Land Use ◽  
Social Control ◽  
Social Interactions ◽  
Collective Efficacy ◽  
Social Cohesion ◽  
Mixed Effects ◽  
Land Use Classification ◽  
Social Survey ◽  
Panel Models ◽  
Over Time

Neighbourhood places like shops, cafes and parks support a variety of social interactions ranging from the ephemeral to the intimate. Repeated interactions at neighbourhood places over time lay the foundation for the development of social cohesion and collective efficacy. In this study, we examine the proposition that changes in the presence or arrangement of neighbourhood places can destabilise social cohesion and collective efficacy, which has implications for crime. Using spatially integrated crime, social survey and parcel-level land-use classification data, we estimate mixed effects panel models predicting changes in theft and nuisance crimes across 147 Australian neighbourhoods. The findings are consistent with neighbourhood social control and crime opportunity theories. Neighbourhood development – indicated by fewer vacant properties and fewer industrial and agricultural sites – is associated with higher collective efficacy and less crime over time. Conversely, introducing more restaurants, transit stations and cinemas is associated with higher theft and nuisance over time regardless of neighbourhood collective efficacy. We argue that the addition of socially conducive places can leave neighbourhoods vulnerable to crime until new patterns of sociability emerge and collective efficacy develops.

Effects of Modified Foodservice Practices in Military Dining Facilities on Ad Libitum Nutritional Intake of US Army Soldiers

2013 ◽  
Vol 113 (7) ◽  
pp. 920-927 ◽  
Author(s):  
Aaron P. Crombie ◽  
LesLee K. Funderburk ◽  
Tracey J. Smith ◽  
Susan M. McGraw ◽  
Leila A. Walker ◽  
...  
Keyword(s):  
Nutritional Intake ◽  
Us Army ◽  
Ad Libitum ◽  
Army Soldiers

scholarly journals Increases in social support co-occur with decreases in depressive symptoms and substance use problems among adults in permanent supportive housing: an 18-month longitudinal study

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Zhengqi Tan ◽  
Eun-Young Mun ◽  
Uyen-Sa D. T. Nguyen ◽  
Scott T. Walters
Keyword(s):  
Social Support ◽  
Substance Use ◽  
Depressive Symptoms ◽  
Protective Factor ◽  
Growth Models ◽  
Parallel Process ◽  
Supportive Housing ◽  
Permanent Supportive Housing ◽  
Substance Use Problems ◽  
Over Time

Abstract Background Social support is a well-known protective factor against depressive symptoms and substance use problems, but very few studies have examined its protective effects among residents of permanent supportive housing (PSH), a housing program for people with a history of chronic homelessness. We utilized unconditional latent growth curve models (LGCMs) and parallel process growth models to describe univariate trajectories of social support, depressive symptoms, and substance use problems and to examine their longitudinal associations in a large sample of adults residing in PSH. Methods Participants were 653 adult PSH residents in North Texas (56% female; 57% Black; mean age: 51 years) who participated in a monthly health coaching program from 2014 to 2017. Their health behaviors were assessed at baseline and tracked every six months at three follow-up visits. Results Unconditional LGCMs indicated that over time, social support increased, whereas depressive symptoms and substance use problems decreased. However, their rates of change slowed over time. Further, in parallel process growth models, we found that at baseline, individuals with greater social support tended to have less severe depressive symptoms and substance use problems (coefficients: − 0.67, p < 0.01; − 0.52, p < 0.01, respectively). Individuals with a faster increase in social support tended to have steeper rates of reduction in both depressive symptoms (coefficient: − 0.99, p < 0.01) and substance use problems (coefficient: − 0.98, p < 0.01), respectively. Conclusions This study suggests that plausibly, increases in social support, though slowing over time, still positively impact depressive symptoms and substance use problems among PSH residents. Future PSH programs could emphasize social support as an early component as it may contribute to clients’ overall health.

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