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1.
Ann Surg ; 279(2): 240-245, 2024 Feb 01.
Article in English | MEDLINE | ID: mdl-37226805

ABSTRACT

OBJECTIVE: To determine whether people living with human immunodeficiency virus (PLWHIV) and people living with hepatitis C virus (PLWHCV) experience inequities in receipt of emergency general surgery (EGS) care. BACKGROUND: PLWHIV and PLWHCV face discrimination in many domains; it is unknown whether this extends to the receipt of EGS care. METHODS: Using data from the 2016 to 2019 National Inpatient Sample, we examined 507,458 nonelective admissions of adults with indications for one of the 7 highest-burden EGS procedures (partial colectomy, small-bowel resection, cholecystectomy, operative management of peptic ulcer disease, lysis of peritoneal adhesions, appendectomy, or laparotomy). Using logistic regression, we evaluated the association between HIV/HCV status and the likelihood of undergoing one of these procedures, adjusting for demographic factors, comorbidities, and hospital characteristics. We also stratified analyses for the 7 procedures separately. RESULTS: After adjustment for covariates, PLWHIV had lower odds of undergoing an indicated EGS procedure [adjusted odds ratio (aOR): 0.81; 95% CI: 0.73-0.89], as did PLWHCV (aOR: 0.66; 95% CI: 0.63-0.70). PLWHIV had reduced odds of undergoing cholecystectomy (aOR: 0.68; 95% CI: 0.58-0.80). PLWHCV had lower odds of undergoing cholecystectomy (aOR: 0.57; 95% CI: 0.53-0.62) or appendectomy (aOR: 0.76; 95% CI: 0.59-0.98). CONCLUSIONS: PLWHIV and PLWHCV are less likely than otherwise similar patients to undergo EGS procedures. Further efforts are warranted to ensure equitable access to EGS care for PLWHIV and PLWHCV.


Subject(s)
General Surgery , Hepatitis C , Surgical Procedures, Operative , Adult , Humans , United States/epidemiology , Hepacivirus , HIV , Retrospective Studies , Emergencies , Colectomy
2.
Curr Psychiatry Rep ; 26(7): 351-358, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38717658

ABSTRACT

PURPOSE OF REVIEW: Eating disorders require more effective therapies than are currently available. While cognitive behavioural therapy for eating disorders (CBT-ED) has the most evidence to support its effectiveness, it requires substantial improvement in order to enhance its reach and outcomes, and to reduce relapse rates. Recent years have seen a number of noteworthy developments in CBT-ED, which are summarised in this paper. RECENT FINDINGS: The key advances identified here include: improvements in the efficiency and availability of CBT-ED; expansion of applicability to younger cases across durations of eating disorder; and new methodologies. There have been important recent advances in the field of CBT-ED. However, it is important to stress that there remain gaps in our evidence base and clinical skills, and suggestions are made for future research and clinical directions.


Subject(s)
Cognitive Behavioral Therapy , Feeding and Eating Disorders , Humans , Cognitive Behavioral Therapy/methods , Feeding and Eating Disorders/therapy
3.
BMC Public Health ; 24(1): 1221, 2024 May 03.
Article in English | MEDLINE | ID: mdl-38698393

ABSTRACT

BACKGROUND: Firearm violence is an intensifying public health problem in the United States. News reports shape the way the public and policy makers understand and respond to health threats, including firearm violence. To better understand how firearm violence is communicated to the public, we aimed to determine the extent to which firearm violence is framed as a public health problem on television news and to measure harmful news content as identified by firearm-injured people. METHODS: This is a quantitative content analysis of Philadelphia local television news stories about firearm violence using a database of 7,497 clips. We compiled a stratified sample of clips aired on two randomly selected days/month from January-June 2021 from the database (n = 192 clips). We created a codebook to measure public health frame elements and to assign a harmful content score for each story and then coded the clips. Characteristics of stories containing episodic frames that focus on single shooting events were compared to clips with thematic frames that include broader social context for violence. RESULTS: Most clips employed episodic frames (79.2%), presented law enforcement officials as primary narrators (50.5%), and included police imagery (79.2%). A total of 433 firearm-injured people were mentioned, with a mean of 2.8 individuals shot included in each story. Most of the firearm-injured people featured in the clips (67.4%) had no personal information presented apart from age and/or gender. The majority of clips (84.4%) contained at least one harmful content element. The mean harmful content score/clip was 2.6. Public health frame elements, including epidemiologic context, root causes, public health narrators and visuals, and solutions were missing from most clips. Thematic stories contained significantly more public health frame elements and less harmful content compared to episodic stories. CONCLUSIONS: Local television news produces limited public health coverage of firearm violence, and harmful content is common. This reporting likely compounds trauma experienced by firearm-injured people and could impede support for effective public health responses to firearm violence. Journalists should work to minimize harmful news content and adopt a public health approach to reporting on firearm violence.


Subject(s)
Firearms , Public Health , Television , Violence , Humans , Philadelphia , Television/statistics & numerical data , Firearms/statistics & numerical data , Violence/statistics & numerical data , Violence/prevention & control , Wounds, Gunshot/prevention & control , Wounds, Gunshot/epidemiology , Gun Violence/prevention & control , Gun Violence/statistics & numerical data
4.
Cogn Behav Ther ; 53(1): 29-47, 2024 01.
Article in English | MEDLINE | ID: mdl-37807843

ABSTRACT

Evidence-based cognitive-behaviour therapy for eating disorders (CBT-ED) differs from other forms of CBT for psychological disorders, making existing generic CBT measures of therapist competence inadequate for evaluating CBT-ED. This study developed and piloted the reliability of a novel measure of therapist competence in this domain-the Cognitive Behaviour Therapy Scale for Eating Disorders (CBTS-ED). Initially, a team of CBT-ED experts developed a 26-item measure, with general (i.e. present in every session) and specific (context- or case-dependent) items. To determine statistical properties of the measure, nine CBT-ED experts and eight non-experts independently observed six role-played mock CBT-ED therapy sessions, rating the therapists' performance using the CBTS-ED. The inter-item consistency (Cronbach's alpha and McDonald's omega) and inter-rater reliability (ICC) were assessed, as appropriate to the clustering of the items. The CBTS-ED demonstrated good internal consistency and moderate/good inter-rater reliability for the general items, at least comparable to existing generic CBT scales in other domains. An updated version is proposed, where five of the 16 "specific" items are reallocated to the general group. These preliminary results suggest that the CBTS-ED can be used effectively across both expert and non-expert raters, though less experienced raters might benefit from additional training in its use.


Subject(s)
Cognitive Behavioral Therapy , Feeding and Eating Disorders , Humans , Reproducibility of Results , Cognitive Behavioral Therapy/methods , Clinical Competence , Feeding and Eating Disorders/therapy
5.
Eur Eat Disord Rev ; 2024 Apr 09.
Article in English | MEDLINE | ID: mdl-38590285

ABSTRACT

BACKGROUND: There is currently a limited understanding of the identification, nature, and treatment of Atypical Anorexia Nervosa (AAN). Recent systematic reviews have identified only small numbers of candidate papers, and some areas lack any meaningful review so far - particularly treatment outcomes. A key issue is the lack of clarity in the literature regarding the definition of weight loss criteria. OBJECTIVES: This scoping review aimed to determine the nature and extent of our knowledge of AAN, in order to assist in the development of future systematic reviews and meta-analyses, as well as indicating what further research is needed. METHOD: Following the identification of 6747 records, 317 records using the term AAN or a defined equivalent were identified from six databases, including the 'grey' literature. RESULTS: Of the 317 studies, 111 provided participant characteristics, and only 10 provided discrete treatment outcomes. Each of these subsets of the data are tabulated and supported with supplementary material, so that future systematic reviewers can access this resource. DISCUSSION: The pattern and content of the existing studies allows recommendations to be made regarding future reviews, research and clinical practice. There is a particular need for clear weight/weight loss criteria and adequate interventions.

6.
J Org Chem ; 88(3): 1918-1921, 2023 Feb 03.
Article in English | MEDLINE | ID: mdl-36661076

ABSTRACT

We found that a previously reported synthesis of 9,9-disubstituted 9,10-dihydroacridines (DHAs) that relied on an acid-catalyzed cyclization was plagued by a competing elimination reaction, resulting in some elimination products being incorrectly identified as their structural isomer DHAs. In this report, we provide improved synthetic procedures for 9,9-disubstituted DHAs, demonstrated by the synthesis of two 9,9-diethyl DHAs.

7.
World J Surg ; 47(10): 2330-2337, 2023 10.
Article in English | MEDLINE | ID: mdl-37452143

ABSTRACT

INTRODUCTION: In low-income settings, there is a high unmet need for hernia surgery, and most procedures are performed with tissue repair techniques. In preparation for a randomized clinical trial, medical doctors and associate clinicians received a short-course competency-based training on inguinal hernia repair with mesh under local anaesthesia. The aim of this study was to evaluate feasibility, safety and effectiveness of the training. METHODS: All trainees received a one-day theoretical module on mesh hernia repair under local anaesthesia followed by hands-on training. Performance was assessed using the American College of Surgeon's Groin Hernia Operative Performance Rating System. Patients were followed up two weeks and one year after surgery. Outcomes of the patients operated on during the training trial were compared to the 229 trial patients operated on after the training. RESULTS: During three surgical camps, seven medical doctors and six associate clinicians were trained. In total, 129 patients were operated on as part of the training. Of the 13 trainees, 11 reached proficiency. Patients in the training group had more wound infections after two weeks (8.5% versus 3.1%; p = 0.041). There was no difference in recurrence and mortality after one year, and none of the deaths were attributed to the surgery. DISCUSSION AND CONCLUSION: Mesh repair is the international standard for inguinal hernia repair worldwide. Nevertheless, this is not widely accessible in low-income settings. This study has demonstrated that short-course intensive hands-on training of MDs and ACs in mesh hernia repair is effective and safe. TRIAL REGISTRATION: International Clinical Trial Registry ISRCTN63478884.


Subject(s)
Hernia, Inguinal , Humans , Hernia, Inguinal/surgery , Groin/surgery , Surgical Mesh , Sierra Leone , Herniorrhaphy/methods , Recurrence
8.
Cogn Behav Ther ; 52(4): 347-379, 2023 07.
Article in English | MEDLINE | ID: mdl-36974519

ABSTRACT

Exposure therapy is effective but widely underused. Numerous studies indicate therapist factors that might explain this pattern of underuse. This systematic review and meta-analysis synthesised those previous research findings, to identify which therapist factors are clearly associated with their intent to use exposure therapy. A systematic review and six random-effects meta-analyses synthesised studies identified in three databases (Scopus, PsychINFO, Web of Science) and through reference lists and citation searches. Most studies relied on a survey design, resulting in weak quality of research. Twenty-six eligible studies were included in the narrative synthesis, (including 5557 participants), while 21 studies yielded sufficient data to enter the meta-analysis. Medium to large pooled effect sizes indicated that therapists with more positive beliefs, a CBT orientation, and training in exposure therapy were significantly more likely to use exposure. Small pooled effect sizes indicated that older and more anxious therapists were less likely to use exposure. Therapist years of experience was not significantly associated with exposure use. There was no evidence of publication bias. Therapist characteristics clearly play a role in the use of exposure therapy, and future clinical and research work is required to address this limitation in the delivery of this effective therapy.


Subject(s)
Implosive Therapy , Humans , Anxiety , Narration
9.
J Surg Res ; 278: 1-6, 2022 10.
Article in English | MEDLINE | ID: mdl-35588570

ABSTRACT

INTRODUCTION: "Talk and die" traditionally described occult presentations of fatal intracranial injuries, but we broaden its definition to victims of penetrating trauma. METHODS: We conducted a descriptive analysis of patients with penetrating torso trauma who presented with a Glasgow Coma Scale verbal score ≥3 and died within 48 h of arrival from 2008 to 2018. RESULTS: Sixty patients were identified. Eighteen (30.0%) required resuscitative thoracotomy with 7 (11.7%) dying in the trauma bay. Fifty-three (86.9%) patients went to the operating room, and 35 (66.0%) required multicavitary exploration. The most common injuries were hollow viscous (58.5%), intra-abdominal vascular (49.0%), liver (28.3%), pulmonary (26.4%), intrathoracic vascular (18.9%), and cardiac (15.75) injuries. Twenty-three (43.4%) patients survived their initial operation, but died in the first 48 h postoperatively. CONCLUSIONS: Patients who "talk and die" most frequently have intra-abdominal vascular injures and require multicavitary exploration.


Subject(s)
Wounds, Penetrating , Glasgow Coma Scale , Humans , Resuscitation , Retrospective Studies , Thoracotomy , Wounds, Penetrating/complications , Wounds, Penetrating/surgery
10.
Prev Med ; 165(Pt A): 107221, 2022 12.
Article in English | MEDLINE | ID: mdl-36002055

ABSTRACT

Interpersonal firearm injuries pose a persistent public health threat in the United States (US). Strategic interventions to curb these injuries require evaluation of measurable outcomes that prove effectiveness and substantiate efforts for wider scaling and implementation. One common outcome of interest used among injury prevention researchers and practitioners is 'recidivism' referring to recurrent injury from acts of violence in a previously firearm injured person. In this commentary we urge that the term which can insinuate racialized criminality and reinforce stigma, no longer be used to describe people who experience firearm injuries. We also advocate for reconsideration of 'recidivism' as an ideal evaluation metric for the success of tertiary firearm injury prevention programs.


Subject(s)
Firearms , Wounds, Gunshot , Humans , United States , Wounds, Gunshot/prevention & control , Violence/prevention & control , Public Health
11.
Prev Med ; 158: 107020, 2022 05.
Article in English | MEDLINE | ID: mdl-35301043

ABSTRACT

Recent increases in firearm violence in U.S. cities are well-documented, however dynamic changes in the people, places and intensity of this public health threat during the COVID-19 pandemic are relatively unexplored. This descriptive epidemiologic study spanning from January 1, 2015 - March 31, 2021 utilizes the Philadelphia Police Department's registry of shooting victims, a database which includes all individuals shot and/or killed due to interpersonal firearm violence in the city of Philadelphia. We compared victim and event characteristics prior to the pandemic with those following implementation of pandemic containment measures. In this study, containment began on March 16, 2020, when non-essential businesses were ordered to close in Philadelphia. There were 331 (SE = 13.9) individuals shot/quarter pre-containment vs. 545 (SE = 66.4) individuals shot/quarter post-containment (p = 0.031). Post-containment, the proportion of women shot increased by 39% (95% CI: 1.21, 1.59), and the proportion of children shot increased by 17% (95% CI: 1.00, 1.35). Black women and children were more likely to be shot post-containment (RR 1.11, 95% CI: 1.02, 1.20 and RR 1.08, 95% CI: 1.03, 1.14, respectively). The proportion of mass shootings (≥4 individuals shot within 100 m within 1 h) increased by 53% post-containment (95% CI: 1.25, 1.88). Geographic analysis revealed relative increases in all shootings and mass shootings in specific city locations post-containment. The observed changes in firearm injury epidemiology following COVID-19 containment in Philadelphia demonstrate an intensification in firearm violence, which is increasingly impacting people who are likely made more vulnerable by existing social and structural disadvantage. These findings support existing knowledge about structural causes of interpersonal firearm violence and suggest structural solutions are required to address this public health threat.


Subject(s)
COVID-19 , Firearms , Wounds, Gunshot , COVID-19/epidemiology , Child , Female , Humans , Pandemics , Philadelphia/epidemiology , Violence , Wounds, Gunshot/epidemiology
12.
J Org Chem ; 86(3): 2037-2057, 2021 02 05.
Article in English | MEDLINE | ID: mdl-33474939

ABSTRACT

N-Nitrosamines are a class of compounds notorious both for the potent carcinogenicity of many of its members and for their widespread occurrence throughout the human environment, from air and water to our diets and drugs. Considerable effort has been dedicated to understanding N-nitrosamines as contaminants, and methods for their prevention, remediation, and detection are ongoing challenges. Understanding the chemistry of N-nitrosamines will be key to addressing these challenges. To facilitate such understanding, we focus in this Perspective on the structure, reactivity, and synthetic applications of N-nitrosamines with an emphasis on alkyl N-nitrosamines. The role of N-nitrosamines as water contaminants and the methods for their detection are also discussed.


Subject(s)
Nitrosamines , Humans , Water
13.
Prev Med ; 141: 106275, 2020 12.
Article in English | MEDLINE | ID: mdl-33027614

ABSTRACT

Firearm injury is a public health crisis in the United States. Selective media coverage may contribute to incomplete public understanding of firearm injury. To better understand how firearm injury is communicated to the public, we analyzed media coverage of intentional, interpersonal shootings in 3 U.S. cities. We hypothesized that multiple shootings and fatal shootings would be more likely to make the news, as would shootings affecting children, women, and white individuals. We compared police department data on shootings to media reports drawn from the Gun Violence Archive (GVA) for 2017 in Philadelphia, PA, Rochester, NY, and Cincinnati, OH. GVA reports were matched to police data by shooting date, location, victim age, and gender. Matched victims were compared to unmatched using chi2 tests for categorical variables and Kruskal Wallis tests for continuous variables. Philadelphia police reported 1216 firearm assault victims; Cincinnati police reported 407; and Rochester police reported 178. News reports covered 562 (46.2%), 222 (54.6%), and 116 (65.2%) victims, respectively. Fatal shootings were more often reported as were shootings involving multiple victims or women. Half of shooting victims did not make the news. Selective reporting likely limits awareness of the public health impact of firearm injury. Researchers and policy makers should work with journalists and editors to improve the quantity and content of reporting on firearm injury.


Subject(s)
Firearms , Gun Violence , Wounds, Gunshot , Child , Cities , Female , Humans , Philadelphia , United States/epidemiology , Wounds, Gunshot/epidemiology
14.
J Surg Res ; 244: 425-429, 2019 12.
Article in English | MEDLINE | ID: mdl-31326708

ABSTRACT

BACKGROUND: The relationship between behavioral health disorders (BHDs) and outcomes after traumatic injury is not well understood. The objective of this study was to evaluate the association between BHDs and outcomes in the trauma patient population. MATERIALS AND METHODS: We performed a review of the Trauma Quality Improvement Program database from 2013 to 2016 comparing patients with and without a BHD, which was defined as a psychiatric disorder, alcohol or drug use disorders, dementia, or attention deficit hyperactivity disorder. Outcomes of interest were mortality, length of stay (LOS), and inpatient complications. RESULTS: In the study population, 254,882 patients (25%) had a BHD. Of these, psychiatric disorders comprised 38.3% (n = 97,668) followed by alcohol (33.3%, n = 84,845) and drug (26.4%, n = 67,199) use disorders, dementia (20.2%, n = 51,553), and attention deficit hyperactivity disorder (1.7%, n = 4301). On multivariable analysis, overall mortality was lower in the BHD group (odds ratio [OR] 0.83, confidence interval [CI] 0.79-0.83; P < 0.001). Patients with dementia had higher mortality when controlling for other risk factors (OR 1.62, CI 1.56-1.69; P < 0.001). LOS was 8.5 d (s = 0.02) for patients with a BHD versus 7.4 d (s = 0.01) for patients without a BHD (P < 0.001). Comorbid BHD was associated with any inpatient complication (OR 1.19, CI 1.18-1.20; P < 0.001). CONCLUSIONS: Trauma patients with a BHD had lower overall mortality compared with those without a BHD. However, on subgroup analysis, those with dementia had increased mortality. BHDs increased risk for any inpatient complication and prolonged LOS. Trauma patients with BHDs represent a vulnerable population and warrant special attention to minimize harm and improve outcomes.


Subject(s)
Mental Disorders/complications , Wounds and Injuries/mortality , Female , Humans , Length of Stay , Male , Middle Aged , Wounds and Injuries/complications
15.
Prev Med ; 129: 105856, 2019 12.
Article in English | MEDLINE | ID: mdl-31739909

ABSTRACT

Identifying the people and places affected by mass shootings depends on how "mass shooting" is defined. From the perspective of urban neighborhoods, it is likely the number of people injured within a proximate time and space, which determines the event's impact on perceptions of safety and social cohesion. We aimed to describe the incidence of "neighborhood" mass shootings in one US city and to determine how these events were communicated to the public through news media. This mixed-methods study analyzed Philadelphia, Pennsylvania police data from 2006 to 2015. Using rolling temporal and distance buffers, we isolated shooting events involving multiple victims within a defined time period and geography. Selecting a definition of neighborhood mass shooting consistent with other common mass shooting definitions in which ≥4 victims were shot within 1 h and 100 m, we identified 46 events involving 212 victims over 10 years. We then searched public news media databases and used directed content analysis to describe the range and headline content from reports associated with the 46 events. Neighborhood mass shooting victims were more likely to be younger and female compared to other firearm-injured individuals (p < 0.001). Seven (15%) events received no news media attention, and 30 (77%) of the 39 reported events were covered solely in local/regional news. Only one event was named a "mass shooting" in any associated headline. In Philadelphia, neighborhood mass shootings occur multiple times per year but receive limited media coverage. The population health impact of these events is likely under-appreciated by the public and policymakers.


Subject(s)
Firearms , Mass Casualty Incidents/statistics & numerical data , Mass Media , Residence Characteristics , Wounds, Gunshot/epidemiology , Adult , Age Factors , Female , Homicide/statistics & numerical data , Humans , Male , Philadelphia , Sex Factors , United States/epidemiology , Wounds, Gunshot/ethnology , Young Adult
16.
Depress Anxiety ; 36(9): 866-878, 2019 09.
Article in English | MEDLINE | ID: mdl-31233263

ABSTRACT

BACKGROUND: Previous studies indicate that early symptomatic improvement, typically observed during the first 4 weeks of psychological therapy, is associated with positive treatment outcomes for a range of mental health problems. However, the replicability, statistical significance, and magnitude of this association remain unclear. AIM: The current study reviewed the literature on early response to psychological interventions for adults with depression and anxiety symptoms. METHODS: A systematic review and random effects meta-analysis were conducted, including studies found in Medline, PsychINFO, SCOPUS, Web of Science, and through reference lists and reverse citations. RESULTS: Twenty-five eligible studies including 11,091 patients measured early response and examined associations with posttreatment outcomes. It was possible to extract and/or calculate effect size data from 15 studies to conduct a meta-analysis. A large pooled effect size (g = 0.87 [95% confidence interval: 0.63-1.10], p < .0001) indicated that early responders had significantly better posttreatment outcomes compared to cases without early response, and this effect was larger in anxiety (g = 1.37) compared to depression (g = 0.76) measures. Most studies were of good quality and there was no evidence of publication bias. The main limitations concerned insufficient statistical reporting in some studies, which precluded their inclusion in meta-analysis, and it was not possible to examine effect sizes according to different outcome questionnaires. CONCLUSION: There is robust and replicated evidence that early response to therapy is a reliable prognostic indicator for depression and anxiety treatment outcomes.


Subject(s)
Anxiety Disorders/therapy , Anxiety/therapy , Depression/therapy , Depressive Disorder/therapy , Humans , Time Factors , Treatment Outcome
17.
Inorg Chem ; 58(1): 535-539, 2019 Jan 07.
Article in English | MEDLINE | ID: mdl-30525530

ABSTRACT

The structure of Ag5U(PS4)3 is unique, as in the literature there are no other structures of the type MAnPQ (M = transition metal, An = actinide, Q = S, Se, or Te). The compound has been synthesized at 1123 K by standard solid-state methods, and its single-crystal X-ray structure has been determined at 100(2) K. Ag5U(PS4)3 crystallizes in a remarkable new structure type in space group P3221 of the trigonal system with three formula units in a hexagonal cell of dimensions a = b = 9.6635(2) Å, c = 17.1834(4) Å, and γ = 120°. In the structure, each U atom is coordinated to eight S atoms in a bicapped trigonal prismatic manner. Each P atom is tetrahedrally coordinated to four S atoms. Two of the three unique Ag atoms are connected to four S atoms in a distorted tetrahedral manner, whereas the third unique Ag atom forms an Ag2S6 species. The overall structure consists of U polyhedra connected to each other via PS4 tetrahedra through edge-sharing in a zigzag fashion along the c axis to form infinite layers. PS4 groups and the Ag atoms pack these layers. From density functional theory calculations, the total density of states of Ag5U(PS4)3 is asymmetric with respect to spin and has finite spin polarization in the crystal cell: the magnetic moments of two of the U atoms are parallel, whereas the magnetic moment of the third U atom is antiparallel.

19.
Inorg Chem ; 57(13): 7877-7880, 2018 Jul 02.
Article in English | MEDLINE | ID: mdl-29888908

ABSTRACT

Single crystals of K(Th0.75Sr0.25)2Se6 were obtained by a standard solid-state chemistry route at 1173 K. This compound does not belong to the AAn2Q6 family (A = K, Rb, Cs, or Tl; An = Th, U, or Np; Q = S, Se, or Te) that possesses infinite Q-Q-Q chains and where a charge distribution of A+, 2 × An4+, 2 × Q2-, 2 × (Q22.5-) has been proposed and hence a charge of -1.25 on Q of the "dichalcogenide". Rather in K(Th0.75Sr0.25)2Se6, where the Th and Sr cations randomly occupy the same site, incorporation of these differently charged cations breaks the infinite Se-Se-Se chains into a structure that has typical Se22- pairs.

20.
Ann Surg ; 266(3): 432-440, 2017 09.
Article in English | MEDLINE | ID: mdl-28657951

ABSTRACT

OBJECTIVE: We sought to determine whether state firearm legislation correlated with firearm-related fatality rates (FFR) during a 15-year period. BACKGROUND: The politicized and controversial topic of firearm legislation has been grossly understudied when the relative impact of American firearm violence is considered. Scientific evidence regarding gun legislation effectiveness remains scant. METHODS: Demographic and intent data (1999-2013) were collected from the Centers for Disease Control and Prevention's Web-Based Injury Statistics Query and Reporting System database and compared by state firearm legislation rankings with respect to FFR. State scorecards were obtained from firearm-restrictive (Brady Campaign/Law Center against Gun Violence [BC/LC]) and less-restrictive (National Rifle Association) groups. FFR were compared between restrictive and least-restrictive states during 3 periods (1999-2003, 2004-2008, 2009-2013). RESULTS: During 1999 to 2013, 462,043 Americans were killed by firearms. Overall FFR did not change during the 3 periods (10.89 ±â€Š3.99/100,000; 10.71 ±â€Š3.93/100,000; 11.14 ±â€Š3.91/100,000; P = 0.87). Within each period, least-restrictive states had greater unintentional, pediatric, and adult suicide, White and overall FFR than restrictive states (all P < 0.05). Conversely, no correlation was seen, during any of the 3 time periods, with either homicide or Black FFR-population subsets accounting for 41.7% of firearm deaths. CONCLUSIONS: Restrictive firearm legislation is associated with decreased pediatric, unintentional, suicide, and overall FFR, but homicide and Black FFR appear unaffected. Future funding and research should be directed at both identifying the most effective aspects of firearm legislation and creating legislation that equally protects every segment of the American population.


Subject(s)
Firearms/legislation & jurisprudence , Violence/statistics & numerical data , Wounds, Gunshot/mortality , Adolescent , Adult , Aged , Aged, 80 and over , Child , Child, Preschool , Female , Humans , Infant , Infant, Newborn , Male , Middle Aged , United States/epidemiology , Young Adult
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