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Nevin Manimala Statistics

Examination of pediatric tube feeding schedules and oral intake: A retrospective cross-sectional study

Nutr Clin Pract. 2022 Sep 29. doi: 10.1002/ncp.10912. Online ahead of print.

ABSTRACT

BACKGROUND: A common treatment goal for children dependent on enteral feeding is to advance oral nutrition intake and decrease enteral feeding dependence. The purpose of this study was to investigate the relationship between tube feeding schedule and oral intake in feeding tube-dependent children diagnosed with avoidant restrictive food intake disorder (ARFID).

METHODS: A retrospective chart review was completed including 76 tube-dependent children with ARFID between the ages of 1 and 14 years who were evaluated by a registered dietitian, in conjunction with a multidisciplinary feeding team, during January 1, 2018, to May 31, 2019. Eligible participants were diagnosed with ARFID and receiving enteral nutrition via nasogastric or gastrostomy tube during the time of evaluation. The participants were categorized into groups according to tube feeding schedule type (bolus vs. overnight continuous) and further stratified by severity of oral motor deficit, as documented by the speech language pathologist or occupational therapist: none/mild and moderate/severe. The exclusion criteria included children aged <1 year, appetite stimulant listed as an active medication, overnight enteral feeding infusion of >12 h, or calculated percentage of calories from oral intake not specified. The primary study outcome was dichotomized percentage of oral intake, >0% vs 0%.

RESULTS: Following adjustment for confounders, this retrospective chart review showed statistically higher odds of percentage of oral intake >0% in ARFID patients receiving overnight continuous enteral feeding schedules (odds ratio = 0.20, 95% CI: 0.05-0.83, P = 0.027).

CONCLUSION: A bolus feeding schedule may not promote oral intake in feeding tube-dependent children diagnosed with ARFID.

PMID:36172890 | DOI:10.1002/ncp.10912

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Nevin Manimala Statistics

Derivation and validation of a risk assessment model for drug-resistant pathogens in hospitalized patients with community-acquired pneumonia

Infect Control Hosp Epidemiol. 2022 Sep 29:1-8. doi: 10.1017/ice.2022.229. Online ahead of print.

ABSTRACT

OBJECTIVE: To derive and validate a model for risk of resistance to first-line community-acquired pneumonia (CAP) therapy.

DESIGN: We developed a logistic regression prediction model from a large multihospital discharge database and validated it versus the Drug Resistance in Pneumonia (DRIP) score in a holdout sample and another hospital system outside that database. Resistance to first-line CAP therapy (quinolone or third generation cephalosporin plus macrolide) was based on blood or respiratory cultures.

SETTING: This study was conducted using data from 177 Premier Healthcare database hospitals and 11 Cleveland Clinic hospitals.

PARTICIPANTS: Adults hospitalized for CAP.

EXPOSURE: Risk factors for resistant infection.

RESULTS: Among 138,762 eligible patients in the Premier database, 12,181 (8.8%) had positive cultures and 5,200 (3.8%) had organisms resistant to CAP therapy. Infection with a resistant organism in the previous year was the strongest predictor of resistance; markers of acute illness (eg, receipt of mechanical ventilation or vasopressors) and chronic illness (eg, pressure ulcer, paralysis) were also associated with resistant infections. Our model outperformed the DRIP score with a C-statistic of 0.71 versus 0.63 for the DRIP score (P < .001) in the Premier holdout sample, and 0.65 versus 0.58 (P < .001) in Cleveland Clinic hospitals. Clinicians at Premier facilities used broad-spectrum antibiotics for 20%-30% of patients. In discriminating between patients with and without resistant infections, physician judgment slightly outperformed the DRIP instrument but not our model.

CONCLUSIONS: Our model predicting infection with a resistant pathogen outperformed both the DRIP score and physician practice in an external validation set. Its integration into practice could reduce unnecessary use of broad-spectrum antibiotics.

PMID:36172877 | DOI:10.1017/ice.2022.229

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Nevin Manimala Statistics

Feedback of Antibiotic Prescribing in Primary Care (FAPPC) trial: results of a real-world cluster randomized controlled trial in Scotland, UK

J Antimicrob Chemother. 2022 Sep 29:dkac317. doi: 10.1093/jac/dkac317. Online ahead of print.

ABSTRACT

OBJECTIVES: To evaluate the effect of general practice-level prescribing feedback on antibiotic prescribing in a real-world pragmatic cluster randomized controlled trial.

METHODS: Three hundred and forty general practices in four territorial Health Boards in NHS Scotland were randomized in Quarter 1, 2016 to receive four quarterly antibiotic-prescribing feedback reports or not, from Quarter 2, 2016 to Quarter 1, 2017. Reports included different clinical topics, benchmarking against national and health board rates, and behavioural messaging with improvement actions. The primary outcome was total antibiotic prescribing rate. There were 16 secondary prescribing outcomes and 5 hospital admission outcomes (potential adverse effects of reduced prescribing). The main evaluation timepoint was 1 year after the final report (Quarter 1, 2018), with an additional evaluation in the quarter after the final report (Quarter 2, 2017). Routine administrative NHS data were used to generate the feedback reports and analyse the effects.

RESULTS: Total antibiotic prescribing rates were lower at the main evaluation timepoint in both intervention (1.83 versus baseline 1.93 prescriptions/1000 patients/day) and control (1.90 versus baseline 1.98) practices, with no evidence of intervention effect [adjusted rate ratio (ARR) 0.98 (95% CI 0.94-1.02; P = 0.35)]. At the additional timepoint, adjusted total antibiotic prescribing rates were 1.67 and 1.73 prescriptions/1000 patients/day, with evidence of a small intervention effect, ARR 0.99 (0.98-1.00; P = 0.03).

CONCLUSIONS: This well-designed, practice-level antibiotic-prescribing feedback had limited evidence of additional effects in the context of decreasing antibiotic prescribing and an established national stewardship programme.

PMID:36172861 | DOI:10.1093/jac/dkac317

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Nevin Manimala Statistics

Statistics in clinical materials – different opinions

Acta Otolaryngol. 2022 Sep 29:1. doi: 10.1080/00016489.2022.2126002. Online ahead of print.

NO ABSTRACT

PMID:36172849 | DOI:10.1080/00016489.2022.2126002

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Nevin Manimala Statistics

Platelet preservation in cardiac surgery using minimally invasive extracorporeal circulation versus optimized cardiopulmonary bypass

Perfusion. 2022 Sep 29:2676591221130173. doi: 10.1177/02676591221130173. Online ahead of print.

ABSTRACT

BACKGROUND: Minimally invasive extracorporeal circulation (MiECC) is employed as a strategy to attenuate the physiologic disturbance caused by cardiopulmonary bypass. The aim of this study was to compare the coagulation profile of MiECC to an optimized conventional extracorporeal circuit (OpECC) with regards to platelet function, rotational thromboelastometry and blood product usage.

METHODS: A retrospective analysis of coronary artery bypass grafting operations using either MiECC or OpECC was performed at a single institution.

RESULTS: A total of 112 patients were included, with 61 receiving MiECC and 51 OpECC patients. OpECC patients had a significantly larger BSA (1.95+/- 0.22m2 vs 1.88 +/- 0.18m2, p = 0.034), than those who received MiECC. No difference between groups was observed regarding red blood cell, plasma, and platelet transfusions. Functional platelet count during the warming phase of cardiopulmonary bypass was found to be higher in the MiECC group ((136 (102-171) x109/L vs 109 (94-136) x109/L), p = 0.027), as were functional platelets as a percent of total platelet count ((86 (77-91)% vs 76 (63-82)%), p = 0.003). There were no significant differences between other outcomes such as operative mortality, incidence of stroke, and intensive care unit length of stay.

CONCLUSION: While we did not see a difference in blood transfusions, MiECC resulted in a statistically significant advantage over OpECC with regards to preservation of functional platelets.

PMID:36172835 | DOI:10.1177/02676591221130173

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Nevin Manimala Statistics

Designing and Conducting Scholarly Quality Improvement: A Practical Guide for Improvers Everywhere

Hosp Pediatr. 2022 Sep 29:e2022006717. doi: 10.1542/hpeds.2022-006717. Online ahead of print.

ABSTRACT

Successful publication of quality improvement (QI) work is predicated on the use of established QI frameworks and rigorous analytical methods that allow teams to understand the impact of interventions over time. This article is meant to help QI teams disseminate their work more broadly through publication by providing tangible methods that many journals desire in QI articles with specific examples of published works referenced throughout the article. We introduce improvement frameworks that teams should identify early and use as a foundation throughout their projects. We review vital aspects of QI projects, such as team formation, creation of a succinct and clear aim statement, defining primary, process, and balancing measures, as well as QI tools like key driver diagrams, Ishikawa (fishbone) diagrams, and Pareto charts. Finally, we highlight the importance of analyzing data over time to understand the impacts of plan-do-study-act cycles on data. Annotated run charts or, more preferably, annotated statistical process control (or Shewhart) charts are both statistically sound methods to identify significant changes over time. Deliberate planning and execution of QI projects using these concepts will lead to improved chances of QI teams finding success in their project and eventual article acceptance.

PMID:36172802 | DOI:10.1542/hpeds.2022-006717

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Nevin Manimala Statistics

Recurrent, nonequilibrium systems and the Markov blanket assumption

Behav Brain Sci. 2022 Sep 29;45:e184. doi: 10.1017/S0140525X22000309.

ABSTRACT

Markov blankets – statistical independences between system and environment – have become popular to describe the boundaries of living systems under Bayesian views of cognition. The intuition behind Markov blankets originates from considering acyclic, atemporal networks. In contrast, living systems display recurrent, nonequilibrium interactions that generate pervasive couplings between system and environment, making Markov blankets highly unusual and restricted to particular cases.

PMID:36172763 | DOI:10.1017/S0140525X22000309

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Nevin Manimala Statistics

Reaction Time Sensitivity to Spectrotemporal Modulations of Sound

Trends Hear. 2022 Jan-Dec;26:23312165221127589. doi: 10.1177/23312165221127589.

ABSTRACT

We tested whether sensitivity to acoustic spectrotemporal modulations can be observed from reaction times for normal-hearing and impaired-hearing conditions. In a manual reaction-time task, normal-hearing listeners had to detect the onset of a ripple (with density between 0-8 cycles/octave and a fixed modulation depth of 50%), that moved up or down the log-frequency axis at constant velocity (between 0-64 Hz), in an otherwise-unmodulated broadband white-noise. Spectral and temporal modulations elicited band-pass filtered sensitivity characteristics, with fastest detection rates around 1 cycle/oct and 32 Hz for normal-hearing conditions. These results closely resemble data from other studies that typically used the modulation-depth threshold as a sensitivity criterion. To simulate hearing-impairment, stimuli were processed with a 6-channel cochlear-implant vocoder, and a hearing-aid simulation that introduced separate spectral smearing and low-pass filtering. Reaction times were always much slower compared to normal hearing, especially for the highest spectral densities. Binaural performance was predicted well by the benchmark race model of binaural independence, which models statistical facilitation of independent monaural channels. For the impaired-hearing simulations this implied a “best-of-both-worlds” principle in which the listeners relied on the hearing-aid ear to detect spectral modulations, and on the cochlear-implant ear for temporal-modulation detection. Although singular-value decomposition indicated that the joint spectrotemporal sensitivity matrix could be largely reconstructed from independent temporal and spectral sensitivity functions, in line with time-spectrum separability, a substantial inseparable spectral-temporal interaction was present in all hearing conditions. These results suggest that the reaction-time task yields a valid and effective objective measure of acoustic spectrotemporal-modulation sensitivity.

PMID:36172759 | DOI:10.1177/23312165221127589

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Nevin Manimala Statistics

Investigation of pd-l1 (cd274), pd-l2 (pdcd1lg2), and ctla-4 expressions in malignant pleural mesothelioma by immunohistochemistry and real-time polymerase chain reaction methods

Pol J Pathol. 2022 Sep 29:47863. doi: 10.5114/pjp.2022.119752. Online ahead of print.

ABSTRACT

INTRODUCTION: Malignant pleural mesothelioma (MPM) is an aggressive malignant disease with a poor prognosis, which affects the surface mesothelium of the pleural cavity. Immune checkpoints are responsible for controlling the immune system to avoid autoimmunity and prevent tissue damage. In this study, we aimed to investigate the expression of cytotoxic T lymphocyte antigen-4 (CTLA-4), programmed death ligand 1 (PD-L1), and programmed death ligand 2 (PD-L2) immuno-control receptors in MPM patients and the relationship of the expression with tumour types and prognostic parameters.

MATERIAL AND METHODS: In this study, we evaluated 50 MPM cases. Immunohistochemically CTLA-4, PD-L1, and PD-L2 were detected by using monoclonal anti-CTLA-4, anti-PD-L1, and anti-PD-L2. Real-time polymerase chain reaction (RT-PCR) analysis was performed with the primers CTLA-4, PD-L1, and PD-L2.

RESULTS: Statistically, no significant relation was determined between the PD-L1, PD-L2, and CTLA-4 expressions (immunohistochemical and RT-PCR methods) and the MPM histological type. Interestingly significant correlation was observed between the mean survival time and immunohistochemical PD-L2 expression; thus, long-term survival was observed in cases with PD-L2 expression.

CONCLUSIONS: Programmed death ligand 1, PD-L2, and CTLA-4 expression were observed in some MPM cases, suggesting that treatments targeting immune checkpoints may be effective. Because immunohistochemical expression of PD-L2 is associated with better prognosis, it may provide useful clues in the follow-up of patients.

PMID:36172747 | DOI:10.5114/pjp.2022.119752

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Nevin Manimala Statistics

Association of Lupus Anticoagulant status with Disease Course in SARS-CoV-2 (COVID-19) Infection

Clin Appl Thromb Hemost. 2022 Jan-Dec;28:10760296221127276. doi: 10.1177/10760296221127276.

ABSTRACT

Background: We investigated the importance of lupus anticoagulant (LA) in patients with SARS-CoV-2. Methods: Medical records of 41 SARS-CoV-2 infected patients were reviewed. Patients were classified into two groups according to the frequency of positive LA test results: “LA (-)” and “LA (+) ≥1” (LA positive at least once). Statistical analysis was performed to determine the association between LA presence and change in LA test results and disease course according to both hospital days (HD) and days after diagnosis (DD). Results: The prevalence of LA was 51.2%. Averagely, the first change in LA test result occurred during DD 12-13 and between HD 9-10. The second change occurred on DD 15-16 and HD 13-14. The presence of LA was associated with severe disease (P = .004) but was not associated with thrombotic complications or mortality. The change of results from negative to positive or vice versa or the frequency of the changes was not associated with disease severity, thrombotic complications, or mortality. Conclusions: LA positivity can be regarded as one of the findings suggesting more serious SARS-CoV-2 infection.

PMID:36172745 | DOI:10.1177/10760296221127276