Reproducibility and diagnostic value of a new wedge-guided bitewing image receptor-holding device

2021 ◽  
pp. 20210186
Author(s):  
Deivi Cascante-Sequeira ◽  
Hugo Gaêta-Araujo ◽  
Danieli Moura Brasil ◽  
Deborah Queiroz Freitas ◽  
Francisco Haiter-Neto
Keyword(s):  
Correlation Coefficient ◽  
Intraclass Correlation ◽  
Diagnostic Value ◽  
Objective Analysis ◽  
Chi Square ◽  
Subjective Analysis ◽  
Holding Device ◽  
Chi Square Test ◽  
Dry Bone ◽  
Better Than

Objective To assess the reproducibility of a wedge-guided bitewing image receptor-holding device (IRHD-WG) compared to a commercially available bitewing image receptor-holding device (IRHD-XCP). Methods and materials Ten operators randomly acquired bitewing radiographs of four posterior regions (Premolar, Molar 1, Molar 2, Molar 3) distributed in two dry bone skulls and mandibles using 2 IRHDs (IRHD-WG and IRHD-XCP). The radiographs corresponding to the same region and IRHD but acquired by different operators were paired for reproducibility comparison. A total of 360 pairs of radiographs were randomized for analysis. Objective analysis consisted of extracting the pixel values from each radiograph and comparing the values between each pair by intraclass correlation coefficient. For subjective analysis, the IRHDs images were digitally removed. Five oral radiologists blinded for the study conditions classified the radiograph pairs according to their similarity and diagnostic value. The answers’ relative frequencies were compared by the chi-square test (α = 0.05). Results The IRHD-WG presented a higher reproducibility (Mean = 0.850; SD = 0.144) than the IRHD-XCP (Mean = 0.615; SD = 0.287) in the objective analysis. Radiographs acquired with the IRHD-WG were more similar than those acquired with the IRHD-XCP (p < 0.001). The diagnostic value of bitewing radiographs acquired with the IRHD-WG was considered superior to those acquired with the IRHD-XCP (p < 0.001). Conclusion For the objective and subjective analyses of reproducibility, the IRHD-WG performed better than the commercial IRHD-XCP.

Hardy-Weinberg Testing for Continuous Data

Genetics ◽  
1997 ◽  
Vol 147 (4) ◽  
pp. 1965-1975
Author(s):  
Lauren M McIntyre ◽  
B S Weir
Keyword(s):  
Intraclass Correlation ◽  
Kernel Density ◽  
Variable Number ◽  
Continuous Data ◽  
Test Statistic ◽  
Test Procedures ◽  
Chi Square ◽  
Exact Test ◽  
Chi Square Test ◽  
The Many

Abstract Estimation of allelic and genotypic distributions for continuous data using kernel density estimation is discussed and illustrated for some variable number of tandem repeat data. These kernel density estimates provide a useful representation of data when only some of the many variants at a locus are present in a sample. Two Hardy-Weinberg test procedures are introduced for continuous data: a continuous chi-square test with test statistic TCCS and a test based on Hellinger's distance with test statistic TCCS. Simulations are used to compare the powers of these tests to each other and to the powers of a test of intraclass correlation TIC, as well as to the power of Fisher's exact test TFET applied to discretized data. Results indicate that the power of TCCS is better than that of THD but neither is as powerful as TFET. The intraclass correlation test does not perform as well as the other tests examined in this article.

scholarly journals Variety of Economic Share of Tourism on Tropical Islands

2010 ◽  
Vol 14 (1) ◽  
pp. 303-314
Author(s):  
Katarzyna Podhorodecka
Keyword(s):  
Case Studies ◽  
Correlation Coefficient ◽  
Spearman Correlation ◽  
Tropical Islands ◽  
Chi Square ◽  
Tropical Island ◽  
Positive Correlation ◽  
Detailed Case ◽  
Chi Square Test

Abstract The author seeks an answer to the question whether a higher intensity of tourism movement is connected with a higher share of tourism in the economy in selected tropical island territories. With the use of the Spearman correlation coefficient, the existence of the average positive correlation between the intensity of tourism movement and the share of tourism in the economy has been determined. In the second part of paper, the author looks at the conditions which affect the role of tourism in the economy in proportion to the intensity of tourism movement. For this purpose, the Chi-square test and detailed case studies of chosen tropical islands are discussed.

scholarly journals FAKTOR YANG BERHUBUNGAN DENGAN STRES KERJA PADA PENYELAM DI PT. X

2015 ◽  
Vol 4 (1) ◽  
pp. 54
Author(s):  
Faris Lazwar Irkhami
Keyword(s):  
Correlation Coefficient ◽  
Job Stress ◽  
Pearson Correlation ◽  
Marine Animal ◽  
Chi Square ◽  
Cross Sectional ◽  
Correlation Test ◽  
Pearson Correlation Test ◽  
Chi Square Test ◽  
Cross Sectional Design

ABSTRACTStress can be perceived as a response to threats situations (either physical or psychological) caused by individual inability  to overcome existing threats within his/her environment. Job stress is the result of interaction between an individual (i.e. a worker) and his/her occupation. The objective of this study to identify the factor affecting tojob stress by the divers at PT. X. This study applied cross-sectional design conducted by observing the divers at PT. X. The population of this study was all divers working at PT. X. Data was analyzed by Spearman Correlation Test, Pearson Correlation Test, and Chi-square Test. The results of this study is strong correlation between personality type and job stress (as indicated by correlation coefficient 0.645). The divers’ age (correlation coefficient -0.283), educational level (correlation coefficient -0.220), years of service/experience (correlation coefficient -0.158), length of diving session (correlation coefficient 0.083), and threats of marine animal attack (correlation coefficient 0.156) had lower correlation with job stress. While the divers residence might also affect their job stress (as indicated by correlation coefficient 0.539).Keywords: job stress, diver

scholarly journals Level of Satisfaction in the Use of the Wraparound Hawley and Thermoplastic Maxillary Retainers

2019 ◽  
Vol 90 (1) ◽  
pp. 63-68 ◽  
Author(s):  
Adenilson Silva Chagas ◽  
Karina Maria Salvatore Freitas ◽  
Rodrigo Hermont Cançado ◽  
Fabricio Pinelli Valarelli ◽  
Luiz Filiphe Gonçalves Canuto ◽  
...  
Keyword(s):  
The Other ◽  
Chi Square ◽  
Level Of Satisfaction ◽  
Intergroup Comparison ◽  
Significant Difference ◽  
Chi Square Test ◽  
Orthodontic Patients ◽  
Better Than

ABSTRACT Objective To compare the level of satisfaction in the use of wraparound Hawley and thermoplastic maxillary retainers. Materials and Methods The study sample included 70 orthodontic patients (24 males and 46 females), who were in the retention stage (mean age = 20.80 years). All patients wore the two types of maxillary retainer for 1 month each, along with a 3×3 fixed mandibular retainer. After the use of each retainer, the patients responded to a questionnaire evaluating the level of satisfaction with their use of the maxillary retainer. Intergroup comparison was performed by independent t tests. Chi-square test was used to evaluate preference for the type of retainer by gender. Results The thermoplastic retainer was better for swallowing and the wraparound Hawley appliance was better for hygiene and durability. The other factors evaluated (adaptation, speech, comfort, esthetics, satisfaction, and fitting) did not show significant differences between the retainers. There was also no significant difference in preference for the appliances. Conclusions Regarding the overall satisfaction and the preference, there was no difference between the wraparound Hawley and thermoplastic retainers. The wraparound Hawley appliance was better in hygiene and resistance than the thermoplastic retainer; and the thermoplastic appliance was better than the wraparound Hawley for swallowing fluids and saliva.

scholarly journals MiR-106B Represents an Innovative Bio-marker in Cholangiocarcinoma Detection

2020 ◽  
Author(s):  
Ning Wang ◽  
Yanni Li ◽  
Yanfang Zheng ◽  
Huoming Chen ◽  
Xiaolong Wen ◽  
...  
Keyword(s):  
Roc Curve ◽  
Clinical Stage ◽  
Serum Levels ◽  
Diagnostic Value ◽  
Diagnostic Biomarker ◽  
Chi Square ◽  
Chi Square Test ◽  
Healthy Control ◽  
Important Regulator ◽  
Polymerase Chain

Abstract Background Cholangiocarcinoma (CCA) is one of the most aggressive malignancies. Late diagnosis may be responsible for the high mortality. MicroRNA-106b (MiR-106b) is accepted as an important regulator in various human malignancies. The current study was aimed to investigate the diagnostic value of miR-106b in CCA. Methods Serum levels of miR-106b in CCA patients and healthy control were evaluated by quantitative real-time polymerase chain reaction (qRT-PCR). Chi-square test was used to analyze the association of miR-106b with the clinicopathological features. To evaluate the diagnostic value of miR-106b in CCA, the ROC curve was constructed. Results The expression of miR-106b was significantly increased in CCA samples compared with the healthy controls (P < 0.001). The overexpression of miR-106b was remarkable correlated with the lymphatic node metastasis (P = 0.038), clinical stage (P = 0.017) and differentiation (P = 0.009). ROC curve suggested that miR-106b was an effective diagnostic biomarker in CCA with the AUC of 0.913. The optimal cutoff value was 2.525, with the sensitivity of 89.7% and the specificity of 79.3%. Conclusions MiR-106b functions as an oncogene in CCA, which may be an potential diagnostic biomarker for CCA.

scholarly journals Perbandingan Hasil Belajar Matematika Antara Yang Menggunakan Pendekatan Konstruktivisme Dengan Pendekatan Open Ended

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Avini Nurazhimah Arfa
Keyword(s):  
Learning Outcomes ◽  
Research Method ◽  
Mathematics Learning ◽  
Research Data ◽  
T Test ◽  
Chi Square ◽  
Learning Mathematics ◽  
Significant Difference ◽  
Chi Square Test ◽  
Better Than

<p class="Default"><em>The purpose of this research is to know whether or not there are differences of learning outcomes of students of class X TKJ 1 and X TKJ 2 between those using a constructivism approach and those using an open-ended approach in learning mathematics in statistics chapter. The research method used is a quasi-experiment with population of students of SMK TERPADU HUTAMA and with samples of 68 people simply and randomly taken by using a self-developed instrument in the form of test about Mathematics Learning Outcomes. The research data for the experimental and controlled classes are collected by analyzing the test using t test, while the normality analysis requirement is analyzed by testing with chi-square test and homogeneity with F test. The result of the research shows that there is a significant difference between students’ learning outcomes through constructivism approach and through an open-ended approach to mathematics learning in SMK TERPADU HUTAMA. From the research results, it can be concluded that the constructivism approach is better than the open-ended approach in statistics learning because the former can encourage the development of individual’s skill in the classroom.</em></p>

scholarly journals MiR-210 has the capacity to serve as a diagnostic biomarker for laryngeal carcinoma patient

2020 ◽  
Author(s):  
Lili Wang ◽  
Hongguang Song ◽  
Shiming Yang
Keyword(s):  
Laryngeal Carcinoma ◽  
Clinical Characteristics ◽  
Roc Analysis ◽  
Diagnostic Value ◽  
Diagnostic Biomarker ◽  
Chi Square ◽  
Qrt Pcr ◽  
Elevated Expression ◽  
Chi Square Test ◽  
Auc Value

Abstract Background Early diagnosis represents a great challenge for laryngeal carcinoma patients. MiR-210 is involved in various human cancers. In this study, we aimed to investigate the diagnostic performance of serum miR-210 in laryngeal carcinoma. Methods In our study, qRT-PCR was performed to determine the serum miR-210 level in 137 laryngeal carcinoma patients and 79 healthy volunteers. The association of serum miR-210 level with clinical characteristics of the patients was estimated by chi-square test. ROC analysis was applied to evaluate the diagnostic value of miR-210 in laryngeal carcinoma. Results Serum miR-210 level was higher in laryngeal carcinoma patients than that in healthy group (P < 0.001). Moreover, its elevated expression was positively associated with TNM stage (P = 0.000) and distant metastasis (P = 0.001). The AUC value of the ROC curve was 0.893, suggesting the possibility of serum miR-210 as a diagnostic biomarker for the disease. The cut-off value was 4.685, with the sensitivity of 83.2% and the specificity of 84.8%. Conclusion MiR-210 serves as an oncogene in progression of laryngeal carcinoma. Serum miR-210 may be a potential diagnostic biomarker for laryngeal carcinoma.

scholarly journals Pemberian Lidocain-Ketorolac sebagai Analgesi Lokal Infiltrasi dibandingkan dengan Parasetamol Intravena untuk Manajemen Nyeri Pascaoperasi Seksio Sesarea (SC) di RSUD Mgr. Gabriel Manek, SVD Atambua

2020 ◽  
Vol 2 (1) ◽  
pp. 1-7
Author(s):  
Yanti Permatasari ◽  
Willy Yant Kartolo
Keyword(s):  
Correlation Coefficient ◽  
Chi Square ◽  
Local Infiltration Analgesia ◽  
Local Infiltration ◽  
Anesthetic Drugs ◽  
Intravenous Paracetamol ◽  
Chi Square Test ◽  
Spearman Correlation Test ◽  
Spearman Test ◽  
Infiltration Analgesia

Latar Belakang: Local Infiltration Analgesia (LIA) adalah teknik memberikan obat anestesi lokal yang diencerkan, dan diberikan adjuvant obat seperti anti-inflamasi nonsteroid (AINS), epinefrin, dan opioid. Tujuan: Untuk mengetahui apakah teknik LIA dapat menurunkan visual analoque scale (VAS) dan menurunkan kebutuhan analgetika dibandingkan pemberian parasetamol intravena dalam 24 jam pascaoperasi seksio sesarea (SC). Metode: Desain penelitian dengan studi intervensi pada populasi pasien wanita hamil yang akan dilakukan SC, dibagi dua kelompok yaitu menggunakan teknik LIA dan Parasetamol.Hasil: Chi-Square pada jam ke-0 menunjukkan nilai sebesar 3.354, dengan nilai p=0,340 ≥α 0,05, artinya pemberian parasetamol dan LIA belum memberikan pengaruh bermakna terhadap skala VAS, sedangkan pada uji Chi-Square jam ke-24 menunjukkan nilai sebesar 36.863, dengan nilai p=0,000 ≤α 0,05 memberikan pengaruh bermakna terhadap skala VAS pasien. Uji spearman pada jam ke-0 nilai koefisien korelasi sebesar -0.090 dengan nilai p= 0.459 ≥ α 0.05 disimpulkan tidak ada hubungan yang signifikan pemberian parasetamol dan LIA dengan skala VAS. Uji Spearman jam ke-24 menunjukkan ada hubungan bermakna antara pemberian parasetamol dan LIA dengan skala VAS dengan nilai koefisien korelasi sebesar -0.671 nilai p= 0.000 ≥α 0Simpulan: Pemberian LIA dapat menurunkan VAS dalam 24 jam pasca operasi SC dibandingkan dengan pemberian paracetamol intravena dan dapat mengurangi kebutuhan analgetik dalam 24 jam pasca-operasi SC dibandingkan dengan pemberian paracetamol intravena.   Lidocain-Ketorolac as Local Infiltration Analgesi Compared to Intravenous Paracetamol for Management Postoperative Pain in Caesarean Section in RSUD Mgr. Gabriel Manek, SVD Atambua Abstract Background: LIA (Local Infiltration Analgesia) is a technique that provides localized anesthetic drugs that are diluted, and given adjuvants drugs such as NSAIDs, epinephrine, and opioids. Objective: This study aims to determine the technique of LIA can decrease VAS and decrease analgesic requirements compared to intravenous administration of paracetamol within 24 hours postoperative SC. Method: The design of this study used an intervention study with a population of pregnant women which have been done by SC and divided into two group which use technique of LIA and paracetamol. Result:Chi-Square at hour 0 show value equal to 3,354, with value p = 0,340 ≥ α 0.05, which mean giving paracetamol and LIA have not significant influence to VAS scale, while in Chi-Square test 24 hour show the value of 36.863, with the value p = 0.000 ≤ α 0.05 which means to provide a significant effect on the VAS scale of patients. In spearman test at hour 0 shows the value of correlation coefficient of -0.090 with p = 0.459 ≥ α 0.05 there is no significant relationship giving paracetamol and LIA with VAS scale. Spearman correlation test clock 24 indicate there is significant relation between giving of paracetamol and LIA with scale of VAS have value of correlation coefficient equal to -0.671 with value p = 0.000 ≥ α 0.Conclusion: LIA reduced VAS in 24 hours after SC procedure better than intravenous Paracetamol and decreased analgetic consumption in 24 hours after SC procedure than intravenous Paracetamol.  

scholarly journals LIM and SH3 Protein 1 Stands for a Bio-Marker for Cholangiocarcinoma Detection

2020 ◽  
Author(s):  
Ning Wang ◽  
Yanni Li ◽  
Yanfang Zheng ◽  
Huoming Chen ◽  
Xiaolong Wen ◽  
...  
Keyword(s):  
Serum Level ◽  
Roc Curve ◽  
Serum Levels ◽  
Diagnostic Value ◽  
Tissue Level ◽  
Healthy Controls ◽  
Roc Curve Analysis ◽  
Chi Square ◽  
Chi Square Test ◽  
Auc Value

Abstract Background: LIM and SH3 protein 1 (LASP-1) has been demonstrated to be overexpression in several types of cancers. The aim of this study was to verify the serum level of LASP-1 and investigate its diagnostic value in cholangiocarcinoma (CCA) patients.Methods: Quantitative real-time polymerase chain reaction (qRT-PCR) was performed to detect the expression level of LASP-1 in CCA patients and healthy controls. The correlation of LASP-1 expression with clinicopathological characteristic of CCA patients was analyzed via Chi-square test. Receiver operating characteristic (ROC) curve was built to evaluate the diagnostic value of serum LASP-1 in CCA.Results: Serum levels of LASP-1 were upregulated in CCA compared with healthy controls (P<0.01). And the serum level and tissue level of LASP-1 mRNA exhibited significant correlation (R=0.454, P=0.000). Serum expression of LASP-1 was closely associated with lymph node metastasis (P=0.018) and TNM stage (P=0.021). ROC curve analysis revealed that serum LASP-1 was of great value in differentiating CCA patients from healthy individuals. The area under the ROC curve (AUC) value was 0.879 corresponding with a sensitivity of 81.9% and a specificity of 79.6%.Conclusions: Serum LASP-1 might be an useful diagnostic biomarker for CCA.

scholarly journals MiR-378 Has the Capacity to Serve as a Diagnostic Biomarker for Prostate Cancer Patient

2020 ◽  
Author(s):  
Shuangqing Cao ◽  
Lei Zheng
Keyword(s):  
Prostate Cancer ◽  
Roc Curve ◽  
Roc Analysis ◽  
Operating Characteristic ◽  
Diagnostic Value ◽  
Healthy Individuals ◽  
Chi Square ◽  
Urine Retention ◽  
Potential Biomarker ◽  
Chi Square Test

Abstract Background: This study aimed to examine the expression of serum miR-378 in prostate cancer (PCa) patients and healthy individuals and to identify the value of miR-378 in PCa diagnosis.Methods: The expression of serum miR-378 between groups was compared by t-test. The association between miR-378 expression and clinical characteristics of PCa patients was assessed using Chi-square test. The diagnostic value of serum miR-378 in PCa was estimated by the receiver operating characteristic (ROC) analysis.Results: The expression level of serum miR-378 in PCa patients was significantly lower than that in healthy individuals (P<0.0001). MiR-378 expression was affected by positive AR (P=0.004), large Gleason score (P=0.013) and advanced TNM stage (P=0.020), however, it had no relationship with age, serum PSA, NED rate and urine retention (all, P>0.05). The ROC curve showed that the optimal cutoff value was 1.845, giving the sensitivity and specificity of 75.21% and 89.77%, respectively. Besides, the area under the ROC curve (AUC) was 0.894, indicating serum miR-378 was of great diagnostic value in screening PCa patients from healthy controls (P<0.0001, 95%CI =0.852-0.936).Conclusions: Taken together, the increased expression of serum miR-378 might act as a potential biomarker for PCa diagnosis.

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