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Nevin Manimala Statistics

Information, meaning and physics: The intellectual evolution of the English School of Information Theory during 1946-1956

Sci Context. 2023 Jan 16:1-17. doi: 10.1017/S0269889722000230. Online ahead of print.

ABSTRACT

In this comparative historical analysis, we will analyze the intellectual tendency that emerged between 1946 and 1956 to take advantage of the popularity of communication theory to develop a kind of informational epistemology of statistical mechanics. We will argue that this tendency results from a historical confluence in the early 1950s of certain theoretical claims of the so-called English School of Information Theory, championed by authors such as Gabor (1956) or MacKay (), and from the attempt to extend the profound success of Shannon’s ([1948] 1993) technical theory of sign transmission to the field of statistical thermal physics. As a paradigmatic example of this tendency, we will evaluate the intellectual work of Léon Brillouin (), who, in the mid-fifties, developed an information theoretical approach to statistical mechanical physics based on a concept of information linked to the knowledge of the observer.

PMID:36644911 | DOI:10.1017/S0269889722000230

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Nevin Manimala Statistics

The Impact of COVID-19 Lockdown on Patients with Type 2 Diabetes Mellitus: A Brief Report

Endocr Metab Immune Disord Drug Targets. 2023 Jan 12. doi: 10.2174/1871530323666230112165948. Online ahead of print.

ABSTRACT

BACKGROUND: The Italian population’s habits changed dramatically during the “COVID-19 lockdown” due to physical distancing and self-isolation. Moreover, medical consultations of patients with chronic diseases, such as type 2 diabetes (T2D), were suspended or postponed, unless urgent or semi-urgent, for several consecutive months. Thus, it is expected that the lockdown could have affected glucometabolic control in T2D.

PURPOSE: The aim of the study was to assess changes in glucometabolic control in a cohort of T2D patients before (T1) and after (T2) the COVID-19 lockdown (March-May 2020).

METHODS: The study was approved by the Ethics Committee of the University of Bari, and all patients provided informed written consent to participate. Medical history, complete physical examination, and laboratory assessment were conducted as real-life clinical practice. Changes in clinical and laboratory variables between T1 and T2 were calculated.

RESULTS: In detail, 13 patients were on metformin as monotherapy, 36 on GLP-1RA, 12 on sodium-glucose transporter 2 inhibitors (SGLT-2i), and 2 on dipeptidyl-peptidase 4 inhibitors (DPP4i). The mean age was 65.3 years (43-83). Study participants were mainly men (73%). The body weight (BW) ranged from 56 to 145 kg, and the waist circumference ranged from 88 to 146 cm. The mean HbA1c was 51.0 mmol/mol. At T2, no statistically significant changes were observed from baseline except for BW [-1.6 (-2.60 to -0.62)] and HbA1c [-2.90 (-4.69; -1.12)].

CONCLUSION: We evaluated the effects of the COVID-19 lockdown on glucometabolic control in patients with background well-controlled T2D. We found that the lockdown had no adverse effects on metabolic profile regardless of background clinical characteristics and antihyperglycemic management. Despite limitations due to the nature of this study (sample size, retrospective observation, lack of data on lifestyle changes in our patients’ everyday lives), T2D patients managed in our Diabetes Centers faced the lockdown-related restrictions without any detrimental consequence.

PMID:36644863 | DOI:10.2174/1871530323666230112165948

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Nevin Manimala Statistics

Rapid systematic review of respiratory rate as a vital sign of clinical deterioration in COVID-19

Expert Rev Respir Med. 2023 Jan 16. doi: 10.1080/17476348.2023.2169138. Online ahead of print.

ABSTRACT

OBJECTIVES: This meta-analysis aimed to establish a clinical evidence base for respiratory rate (RR) as a single predictor of early-onset COVID-19. The review also looked to determine the practical implementation of mobile respiratory rate measuring devices where information was available.

METHODS: We focused on domestic settings with older adults. Relevant studies were identified through MEDLINE, Embase, and CENTRAL databases. A snowballing method was also used. Articles published from the beginning of the COVID-19 pandemic (2019) until Feb 2022 were selected. Databases were searched for terms related to COVID-19 and respiratory rate measurements in domestic patients.

RESULTS: A total of 2,889 articles were screened for relevant content, of which 60 full-text publications were included. We compared the Odds Ratios and statistically significant results of both vital signs.

CONCLUSION: Multinational studies across dozens of countries have shown respiratory rate to have predictive accuracy in detecting COVID-19 deterioration. However, considerable variability is present in the data, making it harder to be sure about the effects. There is no meaningful difference in data quality in terms of variability (95% CI intervals) between vital signs as predictors of decline in COVID-19 patients. Contextual and economic factors will likely determine the choice of measurement used.

PMID:36644851 | DOI:10.1080/17476348.2023.2169138

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Nevin Manimala Statistics

Treatment patterns and clinical outcomes among Medicare beneficiaries using antipsychotic medications for FDA-approved indications before and after transitioning from the community to a nursing home

Curr Med Res Opin. 2023 Jan 16:1-13. doi: 10.1080/03007995.2023.2168418. Online ahead of print.

ABSTRACT

OBJECTIVES: This study examines the relationships between changes in antipsychotic medication (AP) use and acute clinical events (identified with administrative claims data) for patients with FDA-approved indications for APs following transition from the community (eg, home) to a nursing home (NH) in a Medicare population.

METHODS: A retrospective analysis was conducted using 100% Medicare fee-for-service (FFS) research identifiable files (RIF) claims data (2016 – 2018). Medicare beneficiaries with a condition for which APs are approved by the FDA were examined using logistic regression models to determine whether changes in AP use following transition from community to NHs were correlated with the likelihood of experiencing acute clinical events.

RESULTS: We identified 38,448 Medicare FFS beneficiaries meeting our study criteria. A change in AP use after transition to a NH did not have a statistically significant association with acute skeletal events, coronary artery events, or cerebrovascular events (p = 0.55, p = 0.69, and p = 0.59 respectively).

CONCLUSIONS: Between 2016 and 2018, Medicare FFS patients with approved-use indications for APs had lower average AP use following transition to a NH. Changes in the use of other medications of interest largely followed a similar pattern, indicating that these medications did not tend to be used as substitutions for APs. No clear relationship exists between increases or decreases in AP use and adverse events among NH residents who used APs and had FDA-approved conditions in the community setting.

PMID:36644806 | DOI:10.1080/03007995.2023.2168418

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Nevin Manimala Statistics

A simple point-of-care assay accurately detects anti-spike antibodies after SARS-CoV-2 vaccination

J Clin Virol Plus. 2023 Jan 11:100135. doi: 10.1016/j.jcvp.2023.100135. Online ahead of print.

ABSTRACT

OBJECTIVE: Lateral flow assays (LFA) are sensitive for detecting antibodies to SARS-CoV-2 proteins within weeks after infection. This study tested samples from immunocompetent adults, and those receiving treatments for chronic inflammatory diseases (CID), before and after mRNA SARS-CoV-2 vaccination.

METHODS: We compared results obtained with the COVIBLOCK Covid-19 LFA to those obtained by anti-spike (S) ELISA.

RESULTS: The LFA detected anti-S antibodies in 29 of 29 (100%) of the immunocompetent and 110 of 126 (87.3%) of the CID participants after vaccination. Semiquantitative LFA scores were statistically significantly lower in samples from immunosuppressed participants, and were significantly correlated with anti-S antibody levels measured by ELISA.

CONCLUSIONS: This simple LFA test is a practical alternative to laboratory-based assays for detecting anti-S antibodies after infection or vaccination. This type of test may be most useful for testing people in outpatient or resource-limited settings.

PMID:36644774 | PMC:PMC9831968 | DOI:10.1016/j.jcvp.2023.100135

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Nevin Manimala Statistics

Simulation-Based Training on Basic Obstetrics and Gynecology Ultrasound Skills During COVID Pandemic

J Obstet Gynaecol India. 2023 Jan 7:1-6. doi: 10.1007/s13224-022-01719-7. Online ahead of print.

ABSTRACT

BACKGROUND: COVID-19 pandemic led to an alarming rise in sickness absenteeism among the radiologists. Anticipating a continued shortage of experienced radiologists in future COVID waves, it is essential to train the medical professionals in basic skills related to ultrasonography to enable them to perform basic Obstetrics and Gynecology (OG) scans safely in emergencies. Virtual reality simulation training is an alternative to conventional ultrasound training.

METHODS: A cross-sectional study was conducted during 8-day-long workshop to identify the trainees’ basic, after training knowledge and skills in OG ultrasound and to document their perceptions of the training. Statistical analysis was done using descriptive statistics (percentages and mean standard deviations) and paired t test for comparisons.

RESULTS: A total of 80 health care professionals underwent ultrasound simulation training. It was found that the post-test score in the knowledge domain, instrument handling, basic gynecological skills, and first-trimester antenatal ultrasound skills in the practical domain was significantly higher than the pre-test score (P-value < 0.0001). Out of 80 participants, 45 (56.25%) agreed that ultrasound simulation is an ideal method of teaching and training basic OG skills to the novice. Sixty-six out of 80 (82.5%) felt that the principles of handling a human mannequin are the same as those of real patients. Forty-eight participants out of 80 (60.0%) felt that ultrasound simulation can be used as an ideal tool for self-assessment of health care professionals.

CONCLUSION: The study showed that ultrasound-based simulation can provide a realistic setting for training and assessment of novices in learning basic skills.

PMID:36644767 | PMC:PMC9822808 | DOI:10.1007/s13224-022-01719-7

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Nevin Manimala Statistics

The Effectiveness of Student-Led Ward Round Training on Knowledge Acquisition, Critical Thinking Ability, and Self-Confidence of Acute Upper Gastrointestinal Bleeding for Nursing Students

Adv Med Educ Pract. 2023 Jan 7;14:21-30. doi: 10.2147/AMEP.S381760. eCollection 2023.

ABSTRACT

INTRODUCTION: Nursing knowledge, critical thinking ability, and self-perceived confidence are imperative to nursing skills in professional nursing practice. Therefore, nurse educators are required to use teaching strategies that will help promote their knowledge, critical thinking, and self-confidence in complex contents such as the nursing of acute upper gastrointestinal bleeding (AUGIB).

PURPOSE: This study compares the effect of student-led and instructor-led ward-round training methods on knowledge acquisition, critical thinking ability, and self-perceived confidence during AUGIB sessions.

METHODS: Forty nursing students in the first year of the Emergency Nursing Residency Program were randomly divided into a student-led ward round training group (SG) and an instructor-led ward round training group (IG) with a ratio of 1:1. A knowledge quiz, critical thinking ability test, and self-perceived confidence questionnaire were performed before and after the ward round training to assess both groups of students for their knowledge acquisition, critical thinking ability, and self-perceived confidence improvement. Feedback questionnaires were conducted after the training to evaluate students’ perspectives and interests concerning the teaching module.

RESULTS: The scores of the post-training quiz were significantly higher than that of the pre-training quiz in both the SG (44.10±2.92 vs 31.10±4.27, p<0.001) and IG (32.35±2.21 vs 30.55±2.24, p=0.01). In the post-training quiz, scores achieved by the students from the SG (44.10±2.92) were significantly higher than those achieved by the students from the IG (32.35±2.21, p< 0.001). The level of self-perceived confidence improved significantly after ward round training in the SG (p< 0.001). However, there was no statistically significant difference in the IG with respect to the change from pre- to post-training (p=0.43).The students’ critical thinking ability improved significantly in the SG (14.95±2.58 vs 7.10±1.79, p<0.001), while no significant improvement was found in the IG (7.91±2.28 vs 6.52±2.21, p=0.07) after ward round training.

CONCLUSION: The teaching method of SWRT improves nursing students’ knowledge acquisition, critical thinking ability, and self-perceived confidence in AUGIB.

PMID:36644766 | PMC:PMC9832928 | DOI:10.2147/AMEP.S381760

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Nevin Manimala Statistics

Information Technology for a Proctor to Detect Violations during the Exam

Cybern Syst Anal. 2022;58(6):983-990. doi: 10.1007/s10559-023-00533-x. Epub 2023 Jan 7.

ABSTRACT

This article discusses the current problem of cheating students of higher educational institutions during the exam. The subject area is investigated, and the results of theoretical and empirical research on cheating as one of the forms of academic fraud are presented. Statistical data of violations during the exam are shown, and the main patterns of violations during distance learning are revealed. The results of the study will help to determine during what period of the final certification students violate the rules of academic honesty more often.

PMID:36644756 | PMC:PMC9825068 | DOI:10.1007/s10559-023-00533-x

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Nevin Manimala Statistics

Anticoagulation Prescribing Patterns in Intensive Care Unit Patients Admitted with Prehospital Direct Oral Anticoagulant Therapy: A Single Academic Center Experience

Hosp Pharm. 2023 Feb;58(1):84-91. doi: 10.1177/00185787221122656. Epub 2022 Sep 4.

ABSTRACT

OBJECTIVE: To describe the current prescribing practices of direct oral anticoagulants (DOACs) in intensive care unit (ICU) patients and the associated clinical outcomes, including the incidence of major bleeding episodes and the need for intervention (endoscopic, surgical, or interventional radiology guided).

DESIGN: Observational, retrospective chart review.

SETTING AND PARTICIPANTS: Single large academic center study. Participants included patients with critical illness who were admitted to the intensive care units (ICU) at Mayo Clinic from January 1st, 2012, until May 4th, 2018. Adult ICU patients with a DOAC (apixaban, rivaroxaban, dabigatran, or edoxaban) listed as one of the active medications at the time of hospital admission were included.

RESULTS: 37 249 patients in medical and surgical intensive care units were screened for the study period. After excluding patients who did not qualify, 558 unique encounters were included. The median age was 69 (IQR 59-78) years; most patients were male, white Caucasians, and had a median SOFA score of 4. After excluding the patients who had major bleeding episodes in the first 24 hours, 188 (39%) were continued on the same DOAC therapy, 204 (42%) were discontinued without transitioning to another agent, and 95 (20%) were transitioned to another agent. Finally, 410 (84%) were dismissed on DOAC therapy at the end of hospitalization. The difference in the continuation rate of the same DOAC agent beyond 24 hours, discontinuation without transition to an alternate agent, or discontinuation of DOAC with a transition to an alternate anticoagulation agent was not statistically significant (P = .60). A total of 52 major bleeding events were identified. Gastrointestinal bleeding was the most common bleeding complication [n (%): 34 (65)], followed by intra-abdominal and peri-procedural bleeding [7 (13.5) and 7 (13.5)]. Thirty-three (65%) patients had a major bleeding complication requiring intervention.

CONCLUSIONS: Our single-center retrospective study describes the current prescribing practices and preliminary outcomes in ICU patients with prehospital use of DOACs. Up to 20% of the patients were transitioned to a different agent within 24 hours of ICU admission, whereas a significant proportion of patients (42%) had anticoagulation discontinued altogether. Most patients who suffered a major bleeding episode required either endoscopic or surgical intervention to control bleeding.

PMID:36644754 | PMC:PMC9837329 | DOI:10.1177/00185787221122656

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Nevin Manimala Statistics

The Bayesian simulation study (BASIS) framework for simulation studies in statistical and methodological research

Biom J. 2023 Jan 15:e2200095. doi: 10.1002/bimj.202200095. Online ahead of print.

ABSTRACT

Statistical simulation studies are becoming increasingly popular to demonstrate the performance or superiority of new computational procedures and algorithms. Despite this status quo, previous surveys of the literature have shown that the reporting of statistical simulation studies often lacks relevant information and structure. The latter applies in particular to Bayesian simulation studies, and in this paper the Bayesian simulation study framework (BASIS) is presented as a step towards improving the situation. The BASIS framework provides a structured skeleton for planning, coding, executing, analyzing, and reporting Bayesian simulation studies in biometrical research and computational statistics. It encompasses various features of previous proposals and recommendations in the methodological literature and aims to promote neutral comparison studies in statistical research. Computational aspects covered in the BASIS include algorithmic choices, Markov-chain-Monte-Carlo convergence diagnostics, sensitivity analyses, and Monte Carlo standard error calculations for Bayesian simulation studies. Although the BASIS framework focuses primarily on methodological research, it also provides useful guidance for researchers who rely on the results of Bayesian simulation studies or analyses, as current state-of-the-art guidelines for Bayesian analyses are incorporated into the BASIS.

PMID:36642811 | DOI:10.1002/bimj.202200095