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Nevin Manimala Statistics

Observed Injury Rates Did Not Follow Theoretically Predicted Injury Risk Patterns in Professional Human Circus Artists

Clin J Sport Med. 2022 Nov 1;32(6):e627-e634. doi: 10.1097/JSM.0000000000001045. Epub 2022 May 20.

ABSTRACT

OBJECTIVE: Identifying which types of athletes have increased injury risk (ie, predictive risk factors) should help develop cost-effective selective injury prevention strategies. Our objective was to compare a theoretical injury risk classification system developed by coaches and rehabilitation therapists, with observed injury rates in human circus acts across dimensions of physical stressors, acrobatic complexity, qualifications, and residual risks.

DESIGN: Descriptive epidemiological study.

SETTING: professional circus company.

PATIENTS OR OTHER PARTICIPANTS: Human circus artists performing in routine roles between 2007 and 2017.

ASSESSMENT OF RISK FACTORS: Characteristics of circus acts categorized according to 4 different dimensions.

MAIN OUTCOME MEASURES: Medical attention injury rates (injury requiring a visit to the therapist), time-loss injury rates (TL-1; injury resulting in at least one missed performance), and time-loss 15 injury rates (TL-15; injury resulting in at least 15 missed performances).

RESULTS: Among 962 artists with 1 373 572 performances, 89.4% (860/962) incurred at least one medical attention injury, 74.2% (714/962) incurred at least one TL-1 injury, and 50.8% (489/962) incurred at least one TL-15 injury. There were important inconsistencies between theoretical and observed injury risk patterns in each of the 4 dimensions for all injury definitions (medical attention, TL-1, and TL-15).

CONCLUSIONS: Although theoretical classifications are the only option when no data are available, observed risk patterns based on injury surveillance programs can help identify artists who have a high (or low) theoretical risk but are nonetheless actually at low (or high) risk of injury, given their current roles. This will help develop more cost-effective selective injury prevention programs.

PMID:36315828 | DOI:10.1097/JSM.0000000000001045

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Does the Addition of Whole-Body Vibration Training Improve Postural Stability and Lower Limb Strength During Rehabilitation Following Anterior Cruciate Ligament Reconstruction: A Systematic Review With Meta-analysis

Clin J Sport Med. 2022 Nov 1;32(6):627-634. doi: 10.1097/JSM.0000000000001001. Epub 2022 Jan 25.

ABSTRACT

OBJECTIVES: To investigate whether the addition of whole-body vibration therapy to standard rehabilitation improves postural stability and lower limb strength following anterior cruciate ligament (ACL) reconstruction.

DATA SOURCES: A computer-based literature search of MEDLINE, AMED, SPORTDiscus, Embase, CINAHL, CENTRAL, and Physiotherapy Evidence Database (PEDro) included studies up to October 2019.

MAIN RESULTS: Seven randomised controlled trials of moderate-to-high methodological quality involving 244 participants were included. Meta-analysis found statistically significant improvements in medial-lateral stability [standardized mean difference (SMD) = 0.50; 95% confidence interval (CI), 0.12-0.88] and overall stability (SMD = 0.60; 95% CI, 0.14-1.06) favoring whole-body vibration therapy, but effects were not significant for quadriceps strength (SMD = 0.24; 95% CI, -0.65 to 1.13), hamstring strength (SMD = 0.84; 95% CI, -0.05 to 1.72), lower limb strength (SMD = 0.76; 95% CI, -0.16 to 1.67), or anterior-posterior stability (SMD = 0.19; 95% CI, -0.39 to 0.76).

CONCLUSIONS: The addition of whole-body vibration therapy to standard postoperative rehabilitation following ACL reconstruction does not appear to significantly improve lower limb strength and anterior-posterior stability but may improve medial-lateral and overall postural stability. We found small sample sizes in all included trials, statistical heterogeneity, and methodological quality concerns, including publication bias, suggesting that larger high-quality trials are likely to be influential in this field. Registration: PROSPERO 155531.

PMID:36315822 | DOI:10.1097/JSM.0000000000001001

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Preliminary Evaluation of a Novel Point of Care Diagnostic Device for Sports-Related Concussion

Clin J Sport Med. 2022 Nov 1;32(6):623-626. doi: 10.1097/JSM.0000000000001056. Epub 2022 Jul 6.

ABSTRACT

OBJECTIVE: Visinin-like protein 1 (VILIP-1) is a neuron-specific calcium sensor protein rapidly released into blood after mild traumatic brain injury (mTBI) and may be a suitable biomarker for identification of sports-related concussion (SRC). The objective of the study is to test if quantification of a specific post-translationally modified (ubiquitinated) form of VILIP-1 (ubVILIP-1) from a fingerstick blood sample using a point of care (POC) lateral flow device (LFD) can be used to rapidly identify athletes with SRC.

DESIGN: Prospective cohort study.

SETTING: Side-line blood collection at football, soccer, and volleyball games/practices.

PARTICIPANTS: Division I athletes with/without SRC.

MAIN OUTCOME MEASURES: Blood ubVILIP-1 concentrations.

RESULTS: Data collected over 2 athletic seasons from non-SRC athletes (controls) show a small but statistically significant elevation of ubVILIP-1 over an individual season for male athletes (P = 0.02) dependent on sport (P = 0.014) and no significant changes in ubVILIP-1 levels between seasons. For SRC athletes, the data show ubVILIP-1 levels substantially increase above baseline as soon as 30 minutes postdiagnosis with peak concentrations and times postinjury that vary based on injury severity.

CONCLUSION: Results of the study suggest quantification of blood ubVILIP-1 levels measured using an LFD may provide an objective identification of athletes with SRC, setting the stage for further study with a larger number of SRC patients.

PMID:36315821 | DOI:10.1097/JSM.0000000000001056

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Longitudinal Prediction of Ventricular Arrhythmic Risk in Patients With Arrhythmogenic Right Ventricular Cardiomyopathy

Circ Arrhythm Electrophysiol. 2022 Oct 31:e011207. doi: 10.1161/CIRCEP.122.011207. Online ahead of print.

ABSTRACT

BACKGROUND: The arrhythmogenic right ventricular cardiomyopathy (ARVC) risk calculator stratifies risk for incident sustained ventricular arrhythmias (VA) at the time of ARVC diagnosis. However, included risk factors change over time, and how well the ARVC risk calculator performs at follow-up is unknown.

METHODS: This was a retrospective analysis of patients with definite ARVC and without prior sustained VA. Risk factors for VA including age, nonsustained ventricular tachycardia, premature ventricular complex burden, T-wave inversions on electrocardiogram, cardiac syncope, right ventricular function, therapeutic medication use, and exercise intensity were assessed at the time of 2010 Task Force Criteria based ARVC diagnosis and upon repeat evaluations. Changes in these risk factors were analyzed over 5-year follow-up. The 5-year risk of VA was predicted longitudinally using (1) the baseline ARVC risk calculator prediction, (2) the ARVC risk prediction calculated using updated risk factors, and (3) time-varying Cox regression. Discrimination and calibration were assessed in comparison to observed VA event rates.

RESULTS: Four hundred eight patients with ARVC experiencing 132 primary VA events were included. Matched comparison of risk factors at baseline versus at 5 years of follow-up revealed decreased burdens of premature ventricular complexes (-1200/day) and nonsustained ventricular tachycardia (-14%). Presence of significant right ventricular dysfunction and number of T-wave inversions on electrocardiogram were unchanged. Observed risk for VA decreased by 13% by 5 years follow-up. The baseline ARVC risk calculator’s ability to predict 5-year VA risk worsened during follow-up (C statistics, 0.83 at diagnosis versus 0.68 at 5 years). Both the updated ARVC risk calculator (C statistics of 0.77) and time-varying Cox regression model (C statistics, 0.77) had strong discrimination. The updated ARVC risk calculator overestimated 5-year VA risk by an average of +6%.

CONCLUSION: Risk factors for VA in ARVC are dynamic, and overall risk for incident sustained VA decreases during follow-up. Up-to-date risk factor assessment improves VA risk stratification.

PMID:36315818 | DOI:10.1161/CIRCEP.122.011207

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Advances and Applications of Polygenic Scores for Coronary Artery Disease

Annu Rev Med. 2022 Oct 31. doi: 10.1146/annurev-med-042921-112629. Online ahead of print.

ABSTRACT

Polygenic scores quantify inherited risk by integrating information from many common sites of DNA variation into a single number. Rapid increases in the scale of genetic association studies and new statistical algorithms have enabled development of polygenic scores that meaningfully measure-as early as birth-risk of coronary artery disease. These newer-generation polygenic scores identify up to 8% of the population with triple the normal risk based on genetic variation alone, and these individuals cannot be identified on the basis of family history or clinical risk factors alone. For those identified with increased genetic risk, evidence supports risk reduction with least two interventions, adherence to a healthy lifestyle and cholesterol-lowering therapies, that can substantially reduce risk. Alongside considerable enthusiasm for the potential of polygenic risk estimation to enable a new era of preventive clinical medicine is recognition of a need for ongoing research into how best to ensure equitable performance across diverse ancestries, how and in whom to assess the scores in clinical practice, as well as randomized trials to confirm clinical utility. Expected final online publication date for the Annual Review of Medicine, Volume 74 is January 2023. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

PMID:36315649 | DOI:10.1146/annurev-med-042921-112629

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Risk factors for the presence and persistence of posttraumatic stress symptoms following traumatic brain injury in U.S. service members and veterans

J Trauma Stress. 2022 Oct 31. doi: 10.1002/jts.22892. Online ahead of print.

ABSTRACT

This study aimed to identify risk factors predictive of the presence and persistence of posttraumatic stress disorder (PTSD) symptom reporting following traumatic brain injury (TBI). Participants were 1,301 U.S. service members and veterans (SMVs) divided into four groups: uncomplicated mild TBI (mTBI; n = 543); complicated mild, moderate, severe, and penetrating TBI (n = 230); injured controls (n = 340); and noninjured controls (n = 188). We examined 25 factors related to demographic, injury-related, military-specific, treatment/health care need, and mental health/social support variables. Seven factors were statistically associated with the presence of DSM-IV-TR symptom criteria for PTSD: premorbid IQ, combat exposure, depression, social participation, history of mTBI, need for managing mood and stress, and need for improving memory and attention, p < .001 (51.3% variance). When comparing the prevalence of these risk factors in a longitudinal cohort (n = 742) across four PTSD trajectory groups (i.e., asymptomatic, improved, developed, persistent), a higher proportion of participants in the persistent PTSD group reported worse depression, a lack of social participation, and history of mTBI. Additionally, a higher proportion of participants in the persistent and developed PTSD groups reported the need for managing mood/stress and improving memory/attention. When considered simultaneously, the presence of ≥ 1 or ≥ 2 risk factors was associated with a higher proportion of participants in the developed and persistent PTSD groups, ps < .001. These risk factors may be useful in identifying SMVs at risk for the development and/or persistence of PTSD symptoms who may need intervention.

PMID:36315642 | DOI:10.1002/jts.22892

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Hate crime victimization and reporting within Miami’s queer Latine immigrant population

Law Hum Behav. 2022 Oct 31. doi: 10.1037/lhb0000505. Online ahead of print.

ABSTRACT

OBJECTIVES: This research examined hate crime victimization and crime reporting among Miami’s lesbian, gay, bisexual, transgender, and queer (LGBTQ) Latine immigrant population.

HYPOTHESES: Informed by the intersectionality perspective and the Cuban dominance thesis, I predicted that respondents would experience higher levels of victimization than what law enforcement data capture, yet the vast majority of these crimes would go unreported (Hypothesis 1); Respondents or third parties would be more likely to report victimization to police as crime severity increased (Hypothesis 2); and Cuban LGBTQ victims would be more likely to report crime than non-Cuban Latines (Hypothesis 3).

METHOD: Four hundred LGBTQ immigrant Latine individuals (age: M = 37.7 years, Cuban = 51.5%, transgender = 5.8%) in Miami completed face-to-face interviews through a three-stage venue-based sampling procedure.

RESULTS: Although 48% of screened respondents reported experiencing at least one incident of victimization within 5 years, they reported only 15% of these incidents to police (supporting Hypothesis 1). Increased violent and property crime were associated with markedly increased reporting (odds ratio [OR] = 5.44, p < .001), as was the use of a weapon (OR = 2.80, p < .01; supporting Hypothesis 2). Friends’ encouragement to report a crime was by far the strongest predictor of crime reporting (OR = 12.47, p < .001). Cuban Americans were less likely to report anti-LGBTQ hate crimes to the police, although this effect was not statistically significant after models accounted for documented and new immigrant measures of (supporting Hypothesis 3).

CONCLUSIONS: Hate crime victimization and underreporting were prevalent in this sample. Given the different crime-reporting outcomes for Cuban victims, it is important to examine victimization and crime reporting among the Latine population by country of origin. Queer networks and friends within the LGBTQ community may facilitate reporting crime and seeking help. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

PMID:36315640 | DOI:10.1037/lhb0000505

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Chemometric approach to the composition of flavonoid compounds and phenolic acids and antioxidant potential of Artemisia species from different habitats

Chem Biodivers. 2022 Oct 31. doi: 10.1002/cbdv.202200365. Online ahead of print.

ABSTRACT

Four Artemisia species from Serbia were selected for the study: A. annua L., A. absinthium L., A. vulgaris L. and A. scoparia Waldst. et Kit. because of the proven excellent action in treating certain medical conditions and diseases. A. absinthium L., A. vulgaris L., A. annua L. and A. scoparia Waldst. et Kit. collected from different habitats across Serbia (48 samples in total) were studied from the statistical aspect considering the phenolic and flavonoid contents, compositions, and antioxidant activities of methanol extracts in correlation with the soil type. The components were identified using HPLC (High Performance Liquid Chromatography), while antioxidant activities were determined by seven assays (TP (Total phenolic content), TF (Total flavonoid content), DPPH (2,2-diphenyl-1-picrylhydrazy) radical-based, ABTS (2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)) radical cation-based, FRAP (Ferric Reducing Antioxidant Power), TRP (Total Reducing Power), and CUPRAC (Cupric Reducing Antioxidant Capacity). The results were processed using five statistical methods (PCA (Principal Component Analysis), ANOVA (Analysis of Variance), MANOVA (Multivariate analysis of variance), DA (Discriminant analysis), and AHC (Agglomerative Hierarchical Clustering)). Principal component analysis enabled very well separation of the analyzed Artemisia species based on the content of total phenolics, total flavonoids, and the values obtained from antioxidant tests, but not on the individual compounds identified and quantified by HPLC. The MANOVA analyses showed that for A. scoparia and A. annua there was a significant effect of soil type on the total phenolics, total flavonoids, and antioxidant tests. In contrast, for A. vulgaris and A. absinthium, that effect was not significant. Additional MANOVA analyses showed a significant effect of soil type on phenolic and flavonoid compounds in the case of A. vulgaris, A. annua, and A. absinthium. The overall correct classification rate of all samples of four investigated Artemisia species by the discriminant analysis was 81.25% using the training sample and 72.92% the cross-validation results based on TP, TF, and antioxidant tests, but a much lower based on selected compounds identified and quantified by HPLC. MANOVA analyses based on particular Artemisia species show that soil is a significant factor affecting the measurable variables.

PMID:36315629 | DOI:10.1002/cbdv.202200365

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Systematic Review of Surgical Interventions for Inferior Turbinate Hypertrophy

Am J Rhinol Allergy. 2022 Oct 31:19458924221134555. doi: 10.1177/19458924221134555. Online ahead of print.

ABSTRACT

BACKGROUND: Various surgical interventions exist for treatment of inferior turbinate hypertrophy (ITH). Though mucosal-sparing techniques are generally preferred, there is lack of consensus on the optimal technique.

OBJECTIVE: This systematic review sought to evaluate the evidence for treatment of bilateral nasal obstruction via inferior turbinate reduction (ITR) and provide a meta-analysis of expected results of various techniques.

METHODS: PubMed, Scopus, Cochrane Library databases were queried to include articles describing surgical treatment for ITH. Exclusion criteria were concurrent nasal procedures or non-mucosal ITH. Primary outcomes included visual analog scale for nasal obstruction, nasal cavity volume by acoustic rhinometry, and resistance by anterior rhinomanometry. Subgroup analyses assessed outcomes by rhinitis diagnosis and length of follow-up, and radiofrequency ablation (RFA) was compared to microdebrider-assisted turbinoplasty (MAIT).

RESULTS: A total of 1870 studies were identified with 62 meeting inclusion criteria. Reported techniques included turbinectomy, submucosal resection, RFA, MAIT, laser, or electrocautery.All techniques demonstrated significant improvements in nasal obstruction using the visual analog scale. Further comprehensive physiologic data for RFA, MAIT, and laser was available and, compared to baseline, these techniques resulted in significant improvements in nasal resistance, nasal cavity volume, and nasal airflow. Six studies directly compared RFA and MAIT with statistically similar results on VAS, nasal cavity volume, and resistance with median follow-up time of 3.5 months. Assessment of VAS congestion over time reveals peak benefit is achieved between 3-6 months follow-up.

CONCLUSIONS: All reviewed ITR techniques improve patient-reported nasal obstruction. RFA and MAIT provide comparable improvements in patient-reported and physiologic nasal airflow outcomes and while benefits are sustained long-term, the peak benefit for both techniques appears to be achieved within the first year.

PMID:36315624 | DOI:10.1177/19458924221134555

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The number of cases, mortality and treatments of viral hemorrhagic fevers: A systematic review

PLoS Negl Trop Dis. 2022 Oct 31;16(10):e0010889. doi: 10.1371/journal.pntd.0010889. Online ahead of print.

ABSTRACT

BACKGROUND: Viral hemorrhagic fevers (VHFs) are a group of diseases, which can be endemo-epidemic in some areas of the world. Most of them are characterized by outbreaks, which, occur irregularly and are hard to predict. Innovative medical countermeasures are to be evaluated but due to the field specificities of emerging VHF, challenges arise when implementing clinical studies. To assess the state of the art around VHFs, we conducted a systematic review for all reports and clinical studies that included specific results on number of cases, mortality and treatment of VHFs.

METHODS: The search was conducted in January 2020 based on PRISMA guidelines (PROSPERO CRD42020167306). We searched reports on the WHO and CDC websites, and publications in three international databases (MEDLINE, Embase and CENTRAL). Following the study selection process, qualitative and quantitative data were extracted from each included study. A narrative synthesis approach by each VHF was used. Descriptive statistics were conducted including world maps of cases number and case fatality rates (CFR); summary tables by VHF, country, time period and treatment studies.

RESULTS: We identified 141 WHO/CDC reports and 126 articles meeting the inclusion criteria. Most of the studies were published after 2010 (n = 97 for WHO/CDC reports and n = 93 for publications) and reported number of cases and/or CFRs (n = 141 WHO/CDC reports and n = 88 publications). Results varied greatly depending on the outbreak or cluster and across countries within each VHF. A total of 90 studies focused on Ebola virus disease (EVD). EVD outbreaks were reported in Africa, where Sierra Leone (14,124 cases; CFR = 28%) and Liberia (10,678 cases; CFR = 45%) reported the highest cases numbers, mainly due to the 2014-2016 western Africa outbreak. Crimean-Congo hemorrhagic fever (CCHF) outbreaks were reported from 31 studies in Africa, Asia and Europe, where Turkey reported the highest cases number (6,538 cases; CFR = 5%) and Afghanistan the last outbreak in 2016/18 (293 cases; CFR = 43%). Regarding the 38 studies reporting results on treatments, most of them were non-randomized studies (mainly retrospective or non-randomized comparative studies), and only 10 studies were randomized controlled trials. For several VHFs, no specific investigational therapeutic option with strong proof of effectiveness on mortality was identified.

CONCLUSION: We observed that number of cases and CFR varied greatly across VHFs as well as across countries within each VHF. The number of studies on VHF treatments was very limited with very few randomized trials and no strong proof of effectiveness of treatment against most of the VHFs. Therefore, there is a high need of methodologically strong clinical trials conducted in the context of VHF.

PMID:36315609 | DOI:10.1371/journal.pntd.0010889