Assimilation Results Comparison of Educational Material by Senior Students of a Medical University in Distance and Face-to-Face Form Education.

Despite the fact that many researchers and teachers reported that distance education can be equated with traditional face-to-face form education, the question of analyzing the quality of knowledge gained in distance education is open. This study was conducted on the basis of the Department of Medical Cybernetics and Informatics named after S.A. Gasparyan of Russian National Research Medical University. N.I. Pirogov for the period from September 1, 2021 to March 14, 2023 and included results of answers of two variance of test on the same topic. The responses of students who missed the lectures were not included in the processing. For 556 students with distance education, the lesson was held remotely using https://meet.google.com and for 846 students the lesson was performed in face-to-face form education. Students' answers to test tasks were collected using the Google form https://docs.google.com/forms/…The data base statistical assessment and statistical description were made in Microsoft Excel 2010 and IBM SPSS Statistics programs version 23. In this study, it was shown that the results of the learned material assessment for distance education and traditional face-to-face form education are statistically significantly different (p<0.001). The topic studied in face-to-face format was assimilated by 0.85 points better (the difference was five percent of the correct answers received).

Evaluation of the Discrimination Ability of the Decision Rule Allowing to Predict the Probability of Death in Oncosurgical Patients with Comorbid Pathology.

At the moment, there are many decision rules and mathematical models that reduce the risk of postoperative mortality and complications. A small part of such medical mathematical models (scales) is successfully used in practice, but there is also a part that eventually remains on the shelves and becomes morally obsolete. The purpose of this work is to evaluate the discrimination ability of the prognostic model underlying the decision rule that allows ranking patients into groups with favorable and unfavorable outcomes and into a group of patients subject to preoperative preparation to maintain the performance of the mathematical model Oncoprognosis 1.0. The discrimination ability carried out by constructing an area under the Receiver Operating Characteristic (ROC) curve. The investigation allowed conduct that any decision rule requires revision over time, its clarification and, if necessary, adjustments and updates.

Assessment of the Prognostic Accuracy of Scores in Different Ways on the Example of Assessing the Validity of the Prognostic Model ISS-RTS-TRISS.

The aim of the present study was a comparison of prognostic accuracy assessment results for scores in different ways on the example of validity analysis of the prognostic model ISS-RTS-TRISS for assessing the severity of the condition in children with trauma. The prospective study was conducted using clinical and physiological data collected at the admission and during the first 24 hours of hospitalization from 414 children with trauma. We had three groups of patients, common group children with traumatic brain injuries, and two groups of patients were divided into the two following ways: 141 (34%) patients with isolated traumatic brain injuries and 273 (66%) patients with combined injuries with traumatic brain injuries The validity and prognostic accuracy of prognostic scores were assessed by determining there discrimination and calibration ability. Analysis of the discrimination ability of score was carried out by assessment the areas under the ROC curves. For analysis of the calibration ability of score was used three methods of the Hosmer-Lemeshow test (H-criterion, C-criterion in two variants). The ISS-RTS-TRISS score showed significantly outstanding predictive accuracy in studied groups (AUROC >=0.9) .However, estimation the calibration ability of score using the C-criterion, by dividing into groups with the same number of cases of patients (recommended for abnormal distribution) did not show an unambiguous results. It was shown that to obtain an unambiguous correct result, it was necessary to use the C-criterion method using the division of cases into groups with the same number of patients with the lethal outcome. When using this method, satisfactory results of study of calibration ability were shown for all the studied groups (p<0.05).

Model of Decision Making Support for a Doctor in the Treatment of an Oncosurgical Patient in a Hospital.

At the present moment, there is no uniform approach to the decision to conduct a planned surgical intervention in case of oncosurgical pathology, with appropriate recommendations in different sources. Consequently, in modern medicine, there is a particular problem of an objective assessment of the patient's physical condition and a risk assessment of an upcoming surgical intervention for developing an individualized tactic of preparation for surgical treatment for each particular patient. The need for introduction of new approaches and technologies, as well as treatment regimens, that allow us to take a fresh look at the possibilities of solving the problems of predicting critical outcomes of planned operations, determined the purpose of our study. The result of our study was the design of a decision rule in the form of the Microsoft Access software, which allows to rank patients with oncological diseases by the probability of lethal outcome in surgery.

Estimation of the Accuracy of Prognostic Scores for the Treatment of Children with Severe Trauma in a Specialized Trauma Hospital.

The aim of the present work was to study the validity and prognostic accuracy of scores for assessing the severity of the condition in children with severe trauma, located in the Department of Anesthesiology and Resuscitation in the Clinical and Research Institute of Urgent Pediatric Surgery and Trauma. The prospective study was conducted using clinical and physiological data collected at the admission and during the first 24 hours of hospitalization from 474 patients. The validity and prognostic accuracy of prognostic scores were assessed by determining their discrimination and calibration ability. A comparison of the discriminatory ability of scores was carried out by comparing the areas under the ROC curves with the z-criterion. Four prognostic scores were included into the study: PRISM, APACHE II, ISS-RTS-TRISS, which were used for calculating the severity of injury and for prognosis of death. Score PTS was used for evaluating the severity index only. Our results indicate that only score ISS-RTS-TRISS may be useful in practice (has excellent discrimination ability and significant calibration ability). The other lack either discrimination ability (PRISM) or calibration ability (PTS, APACHE II). The result of the study has shown that only one of the four prognostic scores, ISS-RTS-TRISS, can be successfully used in everyday practice in the department of anesthesiology and resuscitation in the specialized hospital of children's traumatology to assess the severity of the condition, with the possibility of predicting the likelihood of a lethal outcome.

Evaluation of Dynamic Changes in Rating of Russian Information Sources of Medical Education Sites.

The aim of the present study is to analyze dynamic changes in the rating of information sources of medical literature in the sites of the following electronic libraries (<rsl.ru>, <rssi.ru>, <elibrary.ru>) and the rating of information sources for electronic medical books (<booksmed.com>, <medliter.ru> <medbook.net.ru>). While using the on-line programs Alexa and Cy-pr, we have analyzed their website's rating and identified basic data and time-varying site data obtained for fourteen months. Alexa Rank rating was calculated for each sitemonthly. Our study has shown that the most popular information sources of medical education among the six studied sites for Russian users is <elibrary.ru>; the site <rssi.ru> is at the second place.

Popularity of Russian information sources of medical education.

The aim of the present study is to analyze the popularity of information sources of medical educational sites <webmedinfo.ru>, medical information portal <meduniver.com>, medical portal for students <6years.net>, electronic library of medical literature <booksmed.com>, <medliter.ru> and <medbook.net.ru>. Three sites (<www.webmedinfo.ru>, <meduniver.com> and <6years.net>) provide sources of medical literature, educational videos, medical histories, medical papers and medical popular literature. And three other sites (<www.booksmed.com>, <www.medliter.ru> and <www.medbook.net.ru>) provide sources for electronic medical books on various subjects. Using on-line programs Alexa and Cy-pr we have analyzed the website's rating and identified the main data and time-varying data of the sites. Calculated Alexa Rank rating was determined for each site. Our study has shown that the most popular information sources of medical education among the six studied sites for Russian users is <meduniver.com>; the site <booksmed.com> is at the second place referring to the Alexa Rank rating and the site <webmedinfo.ru> is at the second place referring to the citation index in Yandex. The most popular medical site of electronic medical books is <booksmed.com>.