Single-position calibration of the respiratory inductance plethysmograph

1983 ◽  
Vol 55 (3) ◽  
pp. 1031-1034 ◽  
Author(s):  
B. Loveridge ◽  
P. West ◽  
N. R. Anthonisen ◽  
M. H. Kryger
Keyword(s):  
Body Position ◽  
Linear Regression Analysis ◽  
Correlation Coefficients ◽  
Normal Subjects ◽  
Calibration Method ◽  
Calibration Procedure ◽  
Multiple Linear Regression Analysis ◽  
Breathing Patterns ◽  
Calibration And Verification ◽  
The Stability

Since we intended to use the respiratory inductance plethysmograph (RIP) to study breathing patterns in a single body position, we developed a method to calibrate the RIP in one position (seated) and verified the stability of this calibration procedure during a 60-min period. The subject breathed spontaneously through a pneumotachograph for 1 min during all calibration and verification runs. All inspiratory data from the abdomen and rib cage RIP transducers was analyzed using multiple linear regression analysis to calculate calibration factors for the transducers. Eight normal subjects were studied, and the stability of calibration at 20, 40, and 60 min was determined. The correlation coefficients were all greater than 0.94. The mean slope and mean intercept describing the relationship of the RIP volume to the pneumotachograph volume for all calibration and verification runs were 0.995 +/- 0.074 and 0.012 +/- 0.018 liter, respectively. This calibration method allows a spirogram to be generated from the RIP signals. Therefore, this technique may be valuable in further investigating resting breathing patterns in humans.

scholarly journals EXAMINATION OF THE ATTITUDES OF THE STUDENTS OF THE SCHOOL OF PHYSICAL EDUCATION AND SPORTS TOWARDS THE EDUTAINMENT APPROACH

2019 ◽  
Vol 7 (3) ◽  
pp. 56-63
Author(s):  
Nalan Aksakal
Keyword(s):  
Physical Education ◽  
Learning Effect ◽  
Pearson Correlation ◽  
Linear Regression Analysis ◽  
Correlation Coefficients ◽  
Multiple Linear Regression Analysis ◽  
Perceived Learning ◽  
Meaningful Relationship ◽  
Medium Level ◽  
Students Attitudes

The aim of this study is to determine School of Physical Education and Sports students’ attitudes background about edutainment approach. A total of 338 students participated in the study; 118 female and 220 male. The study used Attitude Towards Edutainment Scale for data collection purposes. The data obtained were analyzed through descriptive statistics, Explanatory Factor Analysis, Correlation Analysis and Multiple Linear Regression Analysis by using SPSS 18 software. According to the findings the relationship among attitude factors regarding edutainment, correlations among factors range between ,51 and ,63. The lowest correlation value (0.51) was calculated for “perceived learning effect” and “drama” and “practice” factor while the highest correlation (0.63) for “expression and material and drama and practice” factors. Pearson correlation coefficients imply a medium level correlation among all factors. According to standardized beta (β) values in regression model, which shows the correlation among variables, “perceived learning effect” factor has the strongest effect on all recommendation and satisfaction-which are the dependent variables. In conclusion, the study found a meaningful relationship between edutainment approach and “recommendation” and edutainment approach and “satisfaction” It was also found that “satisfaction” has a strong effect on recommendation variable.

scholarly journals Dampak Hubungan Karyawan dan Kedisiplinan Kerja terhadap Kinerja Karyawan

2019 ◽  
Vol 1 (2) ◽  
pp. 382-393
Author(s):  
Rizki Akbari ◽  
Kokom Komariah ◽  
Dicky Jhoansyah
Keyword(s):  
Employee Performance ◽  
Linear Regression Analysis ◽  
Correlation Coefficients ◽  
Multiple Linear Regression Analysis ◽  
Test Reliability ◽  
Coefficient Of Determination ◽  
Employee Relations ◽  
Analysis Technique ◽  
Multiple Correlation Coefficients ◽  
The Impact

The purpose of this study was to determine the impact of employee relations (variable X1) and Work Discipline (variable X2) on Employee Performance (variable Y). The method used in this research is to use descriptive and associative methods. Data collection techniques used by researchers in this study are through observation, questionnaire interviews, documentation and literature studies. The data analysis technique used is the validity test, reliability test, multiple linear regression analysis, including the test of the coefficient of determination and multiple correlation coefficients. The results of the test of the coefficient of determination seen from the value (Adjusted R2) of 0.531 can be interpreted that the impact of employee relations and working discipline on employee performance is equal to 53.1%. The remaining 46.9% is influenced by other factors outside this study. Conclusion, there is a moderate relationship between employee relations and work discipline with employee performance. Keywords: Employee Relations, Work Discipline, Employee Performance

scholarly journals Correlation between levels of physical activity and anxiety and in patients with binge-eating disorder

2020 ◽  
Vol 20 (3) ◽  
pp. 55-64
Author(s):  
Andrea Da Silva Freire ◽  
David Dos Santos ◽  
Ana Vaz ◽  
João Lucas Lima ◽  
Glaciane Axt ◽  
...  
Keyword(s):  
Physical Activity ◽  
Eating Disorder ◽  
Binge Eating ◽  
Binge Eating Disorder ◽  
Linear Regression Analysis ◽  
Correlation Coefficients ◽  
Multiple Linear Regression Analysis ◽  
Anxiety Symptoms ◽  
Almost All

El trastorno de compulsión alimentar periódico (TCAP) está vinculado a varios trastornos psiquiátricos, como los de ansiedad. Aproximadamente el 50-60% de los pacientes con TCAP son resistentes a los tratamientos tradicionales disponibles y, por lo tanto, se necesitan estrategias que apoyen el tratamiento de TCAP, como la actividad física (AF). La práctica de AF parece ser una estrategia interesante para reducir TCAP y síntomas de ansiedad. Por lo tanto, dado que la AF tiene un papel en la reducción de los episodios de TCAP y en la mejora de los síntomas de ansiedad, entonces se necesita más investigación para aclarar el rol moderador de la AF en la TCAP, ya que se establecen correlaciones entre ansiedad-TCAP y ansiedad-AF. Por lo tanto, el objetivo de este estudio fue examinar la asociación entre AF y ansiedad en pacientes con TCAP. Treinta y dos pacientes fueron sometidos a cuestionarios psicológicos y de AF. Se realizaron un coeficiente de correlación de Pearson y un análisis de regresión lineal múltiple para relacionar el comportamiento del TCAP, la ansiedad y la AF. Los coeficientes de correlación entre las dimensiones del TCAP y ansiedad fueron casi todos significativos (excepto restricción), positivos y moderados (p <0.001). Por lo tanto, cuanto más altos sean los valores del TCAP, mayores serán los niveles de ansiedad (p <0.01). En conclusión, nuestros hallazgos respaldan que la PA se correlaciona con la ansiedad en pacientes con BED, lo que sugiere que la PA puede disminuir los síntomas, como las preocupaciones sobre el apetito, el peso y la forma del cuerpo. Binge-eating disorder (BED) is linked to several psychiatric disorders, such as anxiety disorders. Approximately 50-60% of BED patients are resistant to the traditional treatments available, and thus, strategies supporting the treatment of BED are needed, such as physical activity (PA). It seems to be an interesting strategy to reduce BED and anxiety symptoms. Thus, since PA has a role in reducing BED episodes and improving anxiety symptoms, then more research is needed to clarify the role of PA on BED, as correlations between anxiety-BED and anxiety-PA are established. Therefore, our aim is to examine the relationship between PA and anxiety in patients with BED. Thirty two patients we submitted to psychological and PA questionnaires. A Pearson's correlation coefficient and a multiple linear regression analysis were performed to relate eating disorder behaviour, anxiety and PA. The correlation coefficients between the dimensions of BED and anxiety were almost all significant (except restriction), positive and moderate (p<0.001). Thus, the higher the eating disorder values, the higher the anxiety levels (p<0.01). In conclusion, our findings support that PA correlates with anxiety in patients with BED, suggesting that PA may decrease symptoms, such as the appetite, weight and body shape concerns. O transtorno da compulsão alimentar periódica (TCE) está ligado a vários transtornos psiquiátricos, como os transtornos de ansiedade. Aproximadamente 50-60% dos pacientes com TCAP são resistentes aos tratamentos tradicionais disponíveis e, portanto, são necessárias estratégias de apoio ao tratamento, como a atividade física (AF). Parece ser uma estratégia interessante para reduzir os sintomas da TCAP e da ansiedade. Assim, como a AF tem um papel na redução de episódios de TCAP e melhora dos sintomas de ansiedade, são necessárias mais pesquisas para esclarecer o papel da AF na TCAP, à medida que são estabelecidas correlações entre ansiedade-TCLE e ansiedade-PA. Portanto, nosso objetivo é examinar a relação entre AF e ansiedade em pacientes com TCAP. Trinta e dois pacientes foram submetidos a questionários psicológicos e de AF. Um coeficiente de correlação de Pearson e uma análise de regressão linear múltipla foram realizadas para relacionar comportamento de transtorno alimentar, ansiedade e AF. Os coeficientes de correlação entre as dimensões do TCAP e ansiedade foram quase todos significativos (exceto restrição), positivos e moderados (p <0,001). Assim, quanto maiores os valores do transtorno alimentar, maiores os níveis de ansiedade (p <0,01). Em conclusão, nossos achados sustentam que a AF se correlaciona com a ansiedade em pacientes com TCAP, sugerindo que a AF pode diminuir os sintomas, como preocupações com apetite, peso e forma corporal.

scholarly journals Correlation Between Student Performances on Course Level Integrated Clinical Skills Examinations and Objective Structured Clinical Examinations in a Chiropractic College Program

2012 ◽  
Vol 26 (2) ◽  
pp. 138-145
Author(s):  
Brent S. Russell ◽  
Kathryn T. Hoiriis ◽  
Joseph Guagliardo
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Student Performance ◽  
Clinical Skills ◽  
Linear Regression Analysis ◽  
Correlation Coefficients ◽  
Multiple Linear Regression Analysis ◽  
Strong Positive Correlation ◽  
Objective Structured Clinical Examinations ◽  
Upper Level

Purpose: This retrospective study measured correlation of student performance between 2 objective structured clinical examinations (OSCEs) and an introductory integrated clinical skills course that preceded the OSCEs. The hypothesis was that there would be a strong, positive correlation between the earlier level examinations and the upper level OSCE, high enough that earlier examinations could be viewed as predictors of upper level OSCE performance. Methods: Using student scores for 5 academic terms of upper level OSCEs for 2008–2009 (n = 208) and respective earlier scores, correlation coefficients were calculated for the upper level OSCE and Clinical Skills course, and upper and lower level OSCEs. Multiple linear regression analysis was used to evaluate how well the lower level OSCE and clinical skills scores, both as lone and combined independent variables, predicted the upper level OSCE scores. Results: There was at least a moderate correlation between both sets of scores: r = .51 (p &lt; .001) between upper level OSCE and clinical skills course, r = .54 (p &lt; .001) between the upper and lower level OSCEs. A combination of clinical skills and lower level OSCE scores suggested a moderate prediction of upper level OSCE scores (R2 = .38.) Conclusions: Correlations were found to be of at least a moderate level. According to linear regression analysis, a combination of the earlier scores was moderately predictive for the upper level OSCE. More research could be done to determine additional components of student performance.

scholarly journals Association between TSH Values and GFR Levels in Euthyroid Cases with Metabolic Syndrome

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
H. Keskin ◽  
K. Cadirci ◽  
K. Gungor ◽  
T. Karaaslan ◽  
T. Usta ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Kidney Disease ◽  
Linear Regression Analysis ◽  
Correlation Coefficients ◽  
Multiple Linear Regression Analysis ◽  
Thyroid Stimulating Hormone ◽  
Negative Effects ◽  
Stepwise Variable Selection ◽  
Kidney Functions ◽  
The Relationship

Background. Metabolic syndrome (MetS) is associated with the risk of developing chronic kidney disease. Although the negative effects of high thyroid-stimulating hormone (TSH) values on glomerular filtration rate (GFR) levels have been known for years, the negative effects of increased TSH on GFR in euthyroid cases have been reported in recent years. This study was aimed at investigating the association between the effect of increased TSH values and estimated-GFR (eGFR) levels in euthyroid cases with MetS. Methods. For this hospital-based descriptive study, 191 MetS cases (123 females, 68 males) were evaluated. Those whose TSH was not within 0.5–4.5 uIU/mL, eGFR was <40 mL/min/1.73 m2, and/or reported any thyroid/kidney disease were excluded. Partial correlation coefficients were calculated to investigate the relationship between the eGFR values and several other numerical variables while controlling for age and BMI in addition to the adjusted gender effect. Thereafter, the multiple linear regression analysis with a stepwise variable selection approach was used to reveal the independent factors that could affect the logarithmically transformed eGFR. Results. The median age was 52 (19–65) years, the median eGFR was 94.3 (41.3–194) mL/min/1.73 m2, and the median TSH was 1.58 (0.50–4.50) uIU/mL in the whole group. Increased TSH even in the normal range was associated with eGFR after adjusting for age and body mass index (BMI), especially in females. The high age (b = −0.160, p = 0.005 ), high BMI (b = −0.134, p = 0.020 ), high TSH (b = −0.380, p < 0.01 ), and high uric acid (b = −0.348, p < 0.01 ) were found as significant predictors of the eGFR in MetS patients. Conclusion. Independent of age and BMI, elevated TSH even in the euthyroid range showed an association with the eGFR in female MetS cases who had normal kidney functions. This correlation was stronger than the correlations between the eGFR and the MetS diagnostic parameters. These findings need further studies on the issue..

scholarly journals Association of Serum Fatty Acids at Admission with the Age of Onset of Intracerebral Hemorrhage

Nutrients ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2903
Author(s):  
Takahisa Mori ◽  
Kazuhiro Yoshioka ◽  
Yuhei Tanno ◽  
Shigen Kasakura
Keyword(s):  
Fatty Acids ◽  
Intracerebral Hemorrhage ◽  
Operating Characteristic ◽  
Age Of Onset ◽  
Linear Regression Analysis ◽  
Age At Onset ◽  
Correlation Coefficients ◽  
Roc Curves ◽  
Multiple Linear Regression Analysis ◽  
Receiver Operating Characteristic Curves

Dietary triglycerides influence the serum concentrations of fatty acids (FA) and their weight percentages (wt%), which might be associated with the age of onset of intracerebral hemorrhage (ICH). We investigated the correlation between serum FA levels and proportions at admission, and the age at onset of ICH. We included patients admitted between 2016 and 2019 within 24 h of the onset of ICH, and calculated the correlation coefficients between their age, serum FA concentration, and FA wt%. We performed multiple linear regression analysis to identify individual FAs related to the age at onset of ICH. Furthermore, we estimated the threshold values of FAs that were independently associated with the age at onset of ICH <65 years, using receiver operating characteristic curves by logistic regression. Our inclusion criteria were met by 141 patients (mean age, 67 years). The concentration of dihomo-gamma-linolenic acid (DGLA) and the wt% of eicosapentaenoic acid (EPA) were significant independent variables for the age at onset of ICH. The ROC curves for the age of onset <65 years were ≥108.6 µmol/L for DGLA and ≤1.7% for EPA. Increased DGLA concentration and decreased EPA wt% were significantly associated with young-onset ICH.

scholarly journals PENGARUH GAYA KEPEMIMPINAN TRANSAKSIONAL, TRANSFORMASIONAL DAN DISIPLIN KERJA TERHADAP KINERJA GURU (KARYAWAN) DI KOTA MADIUN

2016 ◽  
Vol 4 (02) ◽  
Author(s):  
Satrijo Budiwibowo
Keyword(s):  
Transformational Leadership ◽  
Leadership Styles ◽  
Transactional Leadership ◽  
Leadership Style ◽  
Linear Regression Analysis ◽  
Correlation Coefficients ◽  
Sampling Technique ◽  
Multiple Linear Regression Analysis ◽  
Transactional Leadership Style ◽  
Transformational Leadership Style

<p>Transactional leadership is described as providing an explanation of employees responsibilities and rewards they can expect if the specified standards is achieved. Transformational leadership approach motivates employees, so that they can thrive and achieve high levels of performance. In addition it is also necessary to support the performance of the good discipline of employees. Broadcasting companies who have employees working on the division of operational and management needed different leadership style to support the realization of optimal performance.</p><p> This study used a qualitative approach. Sample was 136 people who are determined by purposive sampling technique. The research instrument used Likert scale models. Data analysis using validity test, realibitas test, the classical assumption, hypothesis testing, multiple linear regression analysis, analysis of correlation coefficients and determination.</p><p> The results showed that together transactional leadership styles, transformational leadership styles, work discipline affect the performance of the company's employees broadcasting. Partially transactional and transformational leadership style had no effect on performance. And partially work discipline most dominant effect on performance.</p><p> <strong>Keywords</strong>: Influence of Transactional, Leadership Style and Discipline Performance</p>

ANALYSIS OF THE EXTERNAL ENVIRONMENT AND INTERNAL CONTROL OF COMPANY PERFORMANCE

2021 ◽  
Vol 9 (1) ◽  
pp. 70
Author(s):  
Hikmar Abdul Majid
Keyword(s):  
Internal Control ◽  
Linear Regression Analysis ◽  
External Environment ◽  
Correlation Coefficients ◽  
Sampling Technique ◽  
Multiple Linear Regression Analysis ◽  
Coefficient Of Determination ◽  
Company Performance ◽  
F Test ◽  
Simultaneous Test

The success of performance is not only from a historical financial aspect, but more than that, from non-financial factors that have a much greater contribution. The research objective is to analyze the environment, internal, and company performance. The method used in this research is a descriptive and associative approach with a quantitative approach. The sampling technique used in this study used saturated sampling or often referred to as census and in this case only PT Ultimedia Group Saudara's employees could get 58 people using the saturated sampling technique. The data analysis technique used is multiple linear regression analysis, including the coefficient of determination, multiple correlation coefficients, partial test (T test), and simultaneous test (F test). The results showed that the external environment has an effect on company performance. Internal control affects company performance. The simultaneous test results (F test) show that the external environment and control have an effect on company performance.

Methicillin-Resistant Staphylococcus Aureus and Antimicrobial Use in Belgian Hospitals

1999 ◽  
Vol 20 (01) ◽  
pp. 31-36 ◽  
Author(s):  
Natasha S. Crowcroft ◽  
Olivier Ronveaux ◽  
Dominique L. Monnet ◽  
Raf Mertens
Keyword(s):  
Staphylococcus Aureus ◽  
Pearson Correlation ◽  
Linear Regression Analysis ◽  
Complex Interventions ◽  
Correlation Coefficients ◽  
Multiple Linear Regression Analysis ◽  
Prescribing Patterns ◽  
Surveillance Program ◽  
Antimicrobial Use ◽  
Methicillin Resistant

Abstract Objective: To investigate relationships between the incidence of methicillin-resistant Staphylococcus aureus (MRSA) and the use of different classes of antimicrobials in Belgian hospitals. Design: Using Pearson correlation coefficients, the number of new nosocomial MRSA-colonized or -infected patients in the second half of 1994 and the first half of 1995 reported by the national MRSA surveillance program was compared with use of various antimicrobial classes as reported by the National Institute for Sickness and Disability Insurance. Relationships between different classes of antimicrobials were evaluated in a correlation matrix. MRSA incidence, antimicrobial use, and potential confounding factors were included in a multiple linear regression analysis. Setting: 50 hospitals in Belgium. Results: The use of a number of different classes of antimicrobials was interrelated. In the multivariate analysis, the incidence of nosocomial MRSA increased with increasing use of ceftazidime and cefsulodin (P=.0003), amoxicillin with clavulanic acid (P=.02), and quinolones (P=.005). No association was found between MRSA incidence and total antimicrobial use. Conclusions: The relationships between antimicrobial use and MRSA are complex. Interventions aimed at promoting more rational prescribing patterns should be supported by adequate experimental and epidemiological evidence. Advice for preventing and controlling MRSA has focused mainly on hygienic measures and precautions to avoid cross-transmission; the role of relieving antimicrobial pressure needs to be clarified.

scholarly journals Changes in corneal properties and its effect on intraocular pressure measurement following phacoemulsification with intraocular lens implantation with or without trabeculectomy

2018 ◽  
Vol 16 (1) ◽  
pp. 35-50
Author(s):  
Ashim Dey ◽  
RathiniLilian David ◽  
Rashima Asokan ◽  
Ronnie George
Keyword(s):  
Intraocular Lens ◽  
Linear Regression Analysis ◽  
Corneal Thickness ◽  
Normal Subjects ◽  
Biomechanical Properties ◽  
Multiple Linear Regression Analysis ◽  
Iol Implantation ◽  
Postoperative Changes ◽  
Applanation Tonometer ◽  
Iop Measurement

Purpose: To evaluate the changes incorneal biomechanical properties and their effect on pre and postoperative differences in IOP measurement by each tonometer Design: Observational study. Methods: The study was done in subjects who underwent phacoemulsification with intraocular lens (IOL) implantation (phaco-IOL) and combined phacoemulsification with IOL implantation and trabeculectomy (phaco-trab). IOP was measured by a single trained examiner using rebound tonometer (RBT), Ocular Response Analyzer (ORA), Goldmann applanation tonometer (GAT), dynamic contour tonometer (DCT), and Tono-Pen. Corneal hysteresis (CH) and corneal resistance factor (CRF) were measured using ORA, central corneal thickness (CCT) using ultrasonic pachymeter, and corneal curvature (CR) with manual keratometry. All measurements were done one week prior to surgery and after four weeks and six weeks of the two surgeries, respectively. Only the operated eye was included for analysis. Results: Twenty-nine eyes of 29 normal subjects who underwent phaco-IOL and 23 eyes of 23 glaucoma subjects who underwent phaco-trab were studied. Increase in CCT [10.2 ± 14.86 microns, p = 0.001], decrease in CH [0.82 ± 1.38 mmHg, p = 0.003] and CRF [0.97 ± 1.0 mmHg, p < 0.001] were found post-phaco-IOL, whereas post-phaco-trab decrease in CCT [16.61 ± 15.22 microns, p < 0.001], CRF [2.28 ± 1.93 mmHg, p < 0.001] with increase in CH [0.95 ± 1.89 mmHg, p = 0.03] were noted. Multiple linear regression analysis showed significant associations for change in CH and CRF with change in IOP and not with CCT and CR postoperatively. Conclusion: Alterations in CH and CRF were associated with changes in IOP measured postoperatively by different tonometers. CH and CRF changes contribute to postoperative changes in measured IOP.  

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