Search results

1

Resections and Palliative Procedures in Patients Operated on for Colorectal Cancer in Poland in 2005-2008

100%

Klimczak A., Mik M., Dziki Ł., Seroka W., Dziki A.

Polish Journal of Surgery

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2010

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vol. 82

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issue 11

621-625

EN

The aim of the study was analysis of the number of resection and palliative procedures in patients operated on for colorectal cancer in Poland. We also analyzed the number of sphincter-sparing surgery in patients with rectal cancer.Material and methods. Statistical data about surgical procedures performed in patients with colorectal cancer were obtained from the National Institute of Hygiene in Warsaw. The procedures were divided into palliations and resections. The analysis was performed for the period from 2005 to 2008. We analyzed the data including women and men.Results. We observed an increase in the number of resections from 3381 to 3768 (85.6-88% of all treatments) (2005-2008) in patients with colon cancer. A similar regularity was observed in patients who underwent surgery for rectal cancer from 2335 to 2712, respectively (76.4 to 81.4% of all treatments). Similarly, the number of sphincter-sparing surgery over the course of the period has increased from 1502 to 1916 operations.Conclusions. The increase in the percentage of resections and sphincter-sparing surgery may indicate the progress in the earlier detection of colorectal cancer. Another reason for this increase may be improving the level of education of surgeons due to the better availability of workshops and training. However, analysis is based on too short period of time and these conclusions cannot be regarded as final.

2

Relationships between flavonoids and selected elements in infusions of medicinal herbs

100%

Konieczynski P., Arceusz A., Wesolowski M.

Open Chemistry

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2015

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vol. 13

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issue 1

EN

The aim of the studies was to establish relationships between flavonoids and elements important for human health. Therefore, total contents of flavonoids and phosphorus were determined by UV/Vis methods, flavonoids by HPLC, and Ca, Mg, Fe, Mn, Zn and Cu by FAAS in 68 infusions of medicinal herbs. Total flavonoids content in the aqueous extracts were in the range of 0.26 - 16.40 mg per 100 mL. The mean flavonoid contents (in mg per 100 mL of aqueous extract) were 2.24, 2.01, 1.83, 1.88 for rutin, myricetin, quercetin and kaempferol, respectively. The concentrations of Ca, Mg, P were determined in mg per 100 mL, and of Fe, Mn, Zn and Cu in μg per 100 mL. Total content of flavonoids was weakly correlated with quercetin (r = 0.41), kaempferol (r = 0.53), Cu (r = 0.43), and Ca (r = -0.30). Statistically significant correlations were also found among Cu, Ca, Mn, Zn and Fe. Cluster analysis grouped the studied herbs based on total flavonoids, also four flavonoids and essential elements contents, extracted from the whole population of herbs Sambuci flos, Betulae folium, and Sylibi mariani semen. Principal component analysis confirmed these findings and enabled identification of quercetin, kaempferol, Cu and Fe as the factors responsible for differentiation of the studied material.

3

The Effects of Rule Changes on Basketball Game Results in the Men’s European Basketball Championships

100%

Pluta B., Andrzejewski M., Lira J.

Human Movement

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2014

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vol. 15

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issue 4

204-208

EN

Purpose. The aim the study was to analyze the effects of rule changes in men’s professional basketball. Univariate analysis examined game statistics, concentrating only on points scores from selected basketball games and did not include situational variables that may have affected game dynamics. Methods. Data on the results of all games played in the men’s European Basketball Championships between 1935 and 2013 were collected and subjected to statistical analysis. Six main rule modifications which directly affected game play were identified in chronological order. Results. The number of points scored and allowed changed significantly after 1956. The greatest changes in game scores as a result of rule modifications were after rule changes in 1956 and after 1984. Conclusions. Rule changes involve processes that modify game conditions and should be validated following reflective analysis.

4

The use of statistical analysis for estimation of positional accuracy of large-scale digital maps

100%

Doskocz A., Doskocz A.

|

2005

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vol. 54

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issue 3

5

The CDKN2a common variants: 148 Ala/Thr and 500 C/G in 3' UTR, and their association with clinical course of melanoma

100%

Lamperska K. M., Przybyła A., Kycler W., Mackiewicz A.

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EN

Changes in CDKN2a gene are known to be linked with sporadic melanoma and hereditary predisposition to this cancer. In the Polish population mutations in the coding region of the CDKN2a gene are rather rare, therefore the attention has been focused on polymorphisms and alterations in uncoding regions such as 3' UTR. The aim of this study was to analyze two common polymorphisms, Ala148Thr and 500 C/G, and correlate them with the clinical course of melanoma. DNA from 285 patients was analyzed and found polymorphisms were correlated with the clinical parameters employing statistical methods. The obtained results allow us to conclude: (i) survival times of 500 C/G carriers vs. cumulating proportion surviving was not statistically significant; (ii) CDKN2a polymorphism 500 C/G correlated with Ala148Thr; (iii) no correlation was observed between the 500 C/G polymorphism and age of diagnosis, localization of primary melanoma and survival time; (iv) we did not find correlation between 500 C/G and type of cancer in the family; (v) changes in the CDKN2a gene were not found in patients with second cancer.

6

Characteristics of Team Leaders Play as exemplified by the European Championships In Basketball

100%

Pluta B., Andrzejewski M.

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EN

This paper presents a statistical analysis of basketball team leaders performance during a championship status tournament in team sports using the example of the 36th European Championships EuroBasket 2009. The list of player-leaders of particular national teams was developed by means of the expert method, based on the analysis of qualitative and quantitative data. Empirical data gathered were taken from the website of EuroBasket 2009 Poland (www.eurobasket2009.org) and FIBA Europe (www.fiba.com). Formal statistical methods concerning sample description were used. The comparative analysis was conducted by means of various tabular and graphic techniques. The calculations were performed in a STATISTICA spreadsheet. The applied statistical methods allowed a series of conclusions to be drawn concerning the performance of leader-players and their cooperation with other players on the court. The knowledge of particular SGCs (standard game components) realization allows those dispositions of leader-players which are especially significant in the process of cooperation in a basketball team to be improved by coaching.

7

Scientific tools for collecting and analysing medical data in rhinology

88%

Tretiakow D., Skorek A.

Polski Przegląd Otorynolaryngologiczny

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2020

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vol. 9(3)

40-46

EN

Introduction: In the era of „Evidence Based Medicine” knowledge of methodology and scientific trends is an indispensable tool for both practitioner and physician-scientist. The ability to interpret data obtained from the literature allows for better diagnosis, treatment and control of patients. The generally accepted structuring of published data and unification of research tools also allows for conducting original and review papers based on our own results. The Aim: The purpose of our work was to search for and present scientific tools (questionnaires, scales and checklists) used to collect data in rhinology. The results of these studies were published in reputable magazines in the period 2000–2019 in English. Material and method: To search for articles, we used MEDLINE, PubMed and Scopus date bases. Conclusions: The use of generally accepted check-lists and questionnaires in the collection of clinical data and their assessment allows to significantly increase the quality of the collected data and their scientific attractiveness, which in turn is applied to the easier possibility of publishing the obtained results and further citing them in reputable specialist journals.

8

The Objective Method of the Evaluation of the Visual Acuity

88%

Hulewicz A.

International Journal of Electronics and Telecommunications

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2019

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vol. 65

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issue 1

9

SELECTED ASPECTS OF STATISTICAL ANALYSES IN SPORT WITH THE USE OF STATISTICA SOFTWARE

88%

Jascaniene N., Nowak R., Kostrzewa-Nowak D., Kolbowicz M.

Central European Journal of Sport Sciences and Medicine

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2013

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vol. 3

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issue 3

3-11

EN

Statistical analysis is a crucial step in all experimental studies, including sport sciences, because inappropriate analysis can lead to erroneous assumptions of performed experiments. Statistical analyses of the training-related data are required to make the training process more efficient. The analyses of various parameters are performed in repeated cycles, requiring appropriate statistical tests. STATISTICA software (version 10) offers a Friedman test for non-parametric analyses of more than 2 groups of repeated measures (which often takes place). Unfortunately, there is no post hoc test to verify which groups decide of the statistical significance of the results. The solution to this problem may lie in the normalization of the data with one of the most popular logarithmic transformations. It allows performing multiple comparisons for the 1-way ANOVA with repeated measures, as well as appropriate post hoc test to precisely determine which group of data is responsible for the statistical significance of the differences.

10

Verification of the Calculation Assumptions Applied to Solutions of the Acoustic Measurements Uncertainty

88%

Batko W., Bal R.

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11

A Single-Unit Design Structure and Gender Differences in the Swimming World Championships

75%

Pushkar S., Issurin V. B., Verbitsky O.

Journal of Human Kinetics

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2014

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vol. 42

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issue 1

215-222

EN

Four 50 meter male/female finals - the freestyle, butterfly, breaststroke, and backstroke - swum during individual events at the Swimming World Championships (SWCs) can be defined in four clusters. The aim of the present study was to use a single-unit design structure, in which the swimmer was defined at only one scale, to evaluate gender differences in start reaction times among elite swimmers in 50 m events. The top six male and female swimmers in the finals of four swimming stroke final events in six SWCs were analyzed. An unpaired t-test was used. The p-values were evaluated using Neo-Fisherian significance assessments (Hurlbert and Lombardi, 2012). For the freestyle, gender differences in the start reaction times were positively identified for five of the six SWCs. For the backstroke, gender differences in the start reaction times could be dismissed for five of the six SWCs. For both the butterfly and breaststroke, gender differences in the start reaction times yielded inconsistent statistical differences. Pooling all swimmers together (df = 286) showed that an overall gender difference in the start reaction times could be positively identified: p = 0.00004. The contrast between the gender differences in start reaction times between the freestyle and backstroke may be associated with different types of gender adaptations to swimming performances. When the natural groupings of swimming stroke final events were ignored, sacrificial pseudoreplication occurred, which may lead to erroneous statistical differences

12

Comparison of sine-wave frequency estimation methods in respect of speed and accuracy for a few observed cycles distorted by noise and harmonics

75%

Borkowski J., Kania D., Mroczka J.

Metrology and Measurement Systems

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2018

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vol. 25

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issue 2

13

Influence of sand substitution with waste lime powder on the concrete carbonation

75%

Kępniak M., Woyciechowski P., Kępniak M., Woyciechowski P.

Archives of Civil Engineering

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2021

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vol. 67

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issue 4

14

Analysis of ledger-stand joints in the aluminum modular scaffold

71%

Błazik-Borowa E., Pieńko M., Robak A., Borowa A., Jamińska-Gadomska P., Błazik-Borowa E., Pieńko M., Robak A., Borowa A., Jamińska-Gadomska P.

Archives of Civil Engineering

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2017

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issue 1

15

Wybrane kwasy fenolowe i biopierwiastki w roślinnych surowcach leczniczych

63%

Arceusz A., Wesołowski M.

Annales Academiae Medicae Silesiensis

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2011

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vol. 65

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issue 4

7-13

EN

Everlasting interest at herbal preparations as potential supporting drugs in treatment is the reason for determination of type and concentration of phenolic acids in them, as well as of their elemental contents. Due to this the objective of the work was to determine the contents of phenolic acids (ferulic, gallic and caff eic) and macroelements (K, Mg, Ca, Na) and microelements (B, Fe, Zn) in 14 plant materials used popularly in medicine. Analysis of the obtained data showed that the concentrations of ferulic, gallic and caff eic acids were in the ranges: 1.39–145.23 μg/g d. m.; 0.33–85.95 μg/g d. m. and 0.84–270.54 μg/g d. m., respectively. However, in some plant materials the level of ferulic and gallic acids was so low, that it was not possible to determine them. Macroelements were found in the ranges of concentrations: 10.60 – 38.69 mg K/g d. m.; 1.67–8.65 mg Mg/g d. m.; 5.31–39.71 mg Ca/g d. m. and 31.95–995.58 mg Na/kg d. m., whereas microelements in amounts of 24.04–67.01 mg B/kg d. m.; 31.27–260.74 mg Fe/kg d. m. and 13.93–83.35 mg Zn/kg d. m. Correlation analysis indicated the strict inter-relation between Fe level in the studied samples and the concentration of Ca, B and caff eic acid. Principal component analysis (PCA) and cluster analysis (CA) enabled identifi cation of plant materials characterized by high contents of phenolic acids and elements, as well as of such materials, in which the studied analytes were on the lowest level. Cluster analysis confi rmed also the results of correlation analysis, indicated by clusters created on the lowest bonding level, which describe the pairs of analytes with high values of the correlation coeffi cients.

PL

CEL PRACY Nieustające zainteresowanie preparatami roślinnymi jako potencjalnymi lekami wspomagającymi przyczynia się do określenia w nich rodzaju i zawartości substancji czynnych oraz ich składu pierwiastkowego. Celem pracy było oznaczenie zawartości kwasów fenolowych (ferulowego, galusowego, kawowego) oraz makroelementów (K, Mg, Ca, Na) i mikroelementów (B, Fe, Zn) w 14 surowcach roślinnych powszechnie stosowanych w lecznictwie. WYNIKI Stwierdzono że zawartość kwasów: ferulowego, galusowego i kawowego mieściła się w zakresach, odpowiednio: 1,39–145,23 μg/g s. m.; 0,33–85,95 μg/g s.m. i 0,84–270,54 μg/g s.m., ale w przypadku niektórych surowców zawartość kwasów ferulowego i galusowego była tak niska, że nie udało się ich oznaczyć. Makroelementy oznaczono w zakresie stężeń 10,60–38,69 mg K/g s.m.; 1,67–8,65 mg Mg/g s.m.; 5,31–39,71 mg Ca/g s. m. i 31,95–995,58 mg Na/kg s.m., natomiast mikroelementy w ilości 24,04–67,01 mg B/kg s.m.; 31,27–260,74 mg Fe/kg s.m. i 13,93–83,35 mg Zn/kg s. m. WNIOSKI Analiza korelacji wskazała na ścisłą współzależność między stężeniem Fe w badanych próbkach a zawartością Ca, B i kwasu kawowego. Analiza głównych składowych (PCA) i analiza skupień (CA) umożliwiły identyfikację surowców roślinnych charakteryzujących się wysoką zawartością fenolokwasów i pierwiastków oraz surowców, w których ilości oznaczanych analitów były na najniższym poziomie. Analiza skupień potwierdziła również wyniki analizy korelacji, na co wskazują skupienia utworzone na najniższym poziomie wiązania, opisujące pary analitów, które charakteryzują wysokie wartości współczynników korelacji.

16

Logistic regression and classification tree methods as elements of diagnosis in cardiology

63%

Spychała A., Skrzypek M., Niewiadomska E.

Annales Academiae Medicae Silesiensis

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2016

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vol. 70

154-162

EN

INTRODUCTION: The purpose of statistical analysis in research is to identify accurate and reliable conclusions where the researcher has a great deal of sources and information. Usually, one can point to a few different methods that allow the task to be fulfilled, but each time the question arises: which one to choose? MATERIAL AND METHODS: The study was conducted using a database that included 3246 patients in the Second Department of Cardiology, Silesian Medical Centre in Katowice-Ochojec in 2003–2008. We were A model in which the STROKE dependent variable was considered was subjected to statistical analysis, and the results of the analysis suggested selecting the following variables: gender, transfusion, PTCA, IVA, IVM, SVA, aneurysm and hematocrit. RESULTS: The essential factors affecting the occurrence of stroke, according to logistic regression are: aneurysm, transfusion of blood components, prior treatment with PTCA and according to the classification tree: aneurysm and level of hematocrit. CONCLUSIONS: The results achieved by both the two statistical models complemented each other, and by combining them one is able to obtain reliable information to use as a base for the decision-making process.

PL

WSTĘP: Zadaniem analiz statystycznych w badaniach naukowych jest wskazanie trafnych i maksymalnie wiarygodnych wniosków w sytuacji, gdy badacz dysponuje wieloma informacjami. Zwykle można wskazać kilka różnych metod, które pozwalają to zadanie spełnić, jednak za każdym razem nasuwa się pytanie, którą z nich wybrać? MATERIAŁ I METODY: Badania zostały przeprowadzone na bazie danych, która obejmowała 3246 pacjentów przebywających na II Oddziale Kardiologii Górnośląskiego Centrum Medycznego w Katowicach-Ochojcu w latach 2003– –2008. Analizie statystycznej poddano model, w których za zmienną zależną uznano zmienną UDAR, natomiast wyniki przeprowadzonych analiz zasugerowały dobór następujących zmiennych objaśniających: płeć, przetoczenie, PTCA, IVA, IVM, SVA, tętniak i hematokryt. WYNIKI: Czynnikami istotnie wpływającymi na wystąpienie udaru, według regresji logistycznej, są: tętniak, przetoczenie składników krwi i przebyty zabieg PTCA, natomiast według drzewa klasyfikacyjnego – tętniak i poziom hematokrytu. WNIOSKI: Wyniki uzyskane za pomocą obydwu modeli statystycznych dopełniały się, a ich łączenie pozwala na uzyskanie wiarygodnych informacji, stanowiących podstawę procesu decyzyjnego.

17

Time changeability model of the bog ore sorption ability

51%

Gaj K., Cybulska-Szulc H.

Ecological Chemistry and Engineering S

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2014

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vol. 21

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issue 1

113-123

EN

Basing on long-standing cyclic measurements of sludge-originated biogas composition and considering statistical analysis of their results, a regression model describing time variation of biogas desulfurization using bog iron ore has been developed. The model was verified by theoretical calculations and results from laboratory examinations of the sorbent. It was also used to estimate the depletion time and sorption capacity of the bed and to determine the demand index for bog ore.

PL

Na bazie wieloletnich (2003-2009), cyklicznych pomiarów składu biogazu powstającego z osadów ściekowych, na podstawie analizy statystycznej ich wyników opracowano model regresyjny opisujący czasowy charakter zmienności skuteczności odsiarczania biogazu za pomocą rudy darniowej. Model został zweryfikowany z wykorzystaniem obliczeń teoretycznych i wyników badań laboratoryjnych sorbentu. Za jego pomocą oszacowano czas wyczerpania i pojemność sorpcyjną złoża oraz wyznaczono wskaźnik zapotrzebowania na rudę darniową.

18

Influence of differential pressure on formation water flow rate during tests of the autochtonous miocene deposits in the Carpathian Foredeep with DST

45%

Dubiel S., Uliasz-Misiak B., Dubiel S., Uliasz-Misiak B.

Gospodarka Surowcami Mineralnymi

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2012

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vol. 28

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issue 1

Refine search results

Resections and Palliative Procedures in Patients Operated on for Colorectal Cancer in Poland in 2005-2008

Relationships between flavonoids and selected elements in infusions of medicinal herbs

The Effects of Rule Changes on Basketball Game Results in the Men’s European Basketball Championships

The use of statistical analysis for estimation of positional accuracy of large-scale digital maps

The CDKN2a common variants: 148 Ala/Thr and 500 C/G in 3' UTR, and their association with clinical course of melanoma

Characteristics of Team Leaders Play as exemplified by the European Championships In Basketball

Scientific tools for collecting and analysing medical data in rhinology

The Objective Method of the Evaluation of the Visual Acuity

SELECTED ASPECTS OF STATISTICAL ANALYSES IN SPORT WITH THE USE OF STATISTICA SOFTWARE

Verification of the Calculation Assumptions Applied to Solutions of the Acoustic Measurements Uncertainty

A Single-Unit Design Structure and Gender Differences in the Swimming World Championships

Comparison of sine-wave frequency estimation methods in respect of speed and accuracy for a few observed cycles distorted by noise and harmonics

Influence of sand substitution with waste lime powder on the concrete carbonation

Analysis of ledger-stand joints in the aluminum modular scaffold

Wybrane kwasy fenolowe i biopierwiastki w roślinnych surowcach leczniczych

Logistic regression and classification tree methods as elements of diagnosis in cardiology

Time changeability model of the bog ore sorption ability

Influence of differential pressure on formation water flow rate during tests of the autochtonous miocene deposits in the Carpathian Foredeep with DST