Error of the method: what is it for?

Cançado, Rodrigo Hermont; Lauris, José Roberto Pereira

doi:10.1590/2176-9451.19.2.025-026.ebo

Cited by 14 publications

(5 citation statements)

References 4 publications

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“…The evaluation of condylar position and excursion and the measurements of joint spaces and condylar excursion were performed 30 days apart to avoid the observer bias. After 30 days, 20% of the sample for all diagnostic tasks was reevaluated to calculate the intra‐examiner agreement 13 …”

Section: Methodsmentioning

confidence: 99%

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Do cone‐beam computed tomography low‐dose protocols affect the evaluation of the temporomandibular joint?

Reis

Gaêta‐Araujo

Rosado

et al. 2022

J of Oral Rehabilitation

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Background: There is no established acquisition protocol based on scientific evidence for the acquisition of cone-beam computed tomography (CBCT) exams to evaluate the temporomandibular joint (TMJ). Objectives:To evaluate the influence of acquisition protocols and jaw positioning on the diagnostic accuracy of TMJ condylar morphological alterations (CMA), dimension, position and excursion.Methods: Thirty-six TMJs on 18 dry skulls were imaged using a CBCT unit (OP300 Maxio, Instrumentarium, Tuusula, Finland) at two exposure settings (4.5 and 6.3 mA), three voxel resolutions (0.085, 0.125 and 0.280 mm), three jaw positions (concentric, anteriorised and posteriorised) and three jaw excursions (normoexcursion, hyperexcursion and hypoexcursion). The macroscopic anatomy examination and highresolution CBCT images were used as ground truth for CMA. Twenty-five TMJs had at least one CMA with 11 healthy TMJs serving as controls. Three experienced oral and maxillofacial radiologists evaluated the parasagittal images for the presence of CMA, position and excursion and measured dimensions. The area under the ROC curve, sensitivity and specificity were calculated. Weighted Kappa (α = 0.05) was used to determine intra-and interexaminer reliability and comparisons between dependent variables analysed by Analysis of Variance at an a prior level of significance of 0.05. Results:The agreement of the evaluation of the position and excursion with the reference standard was high, independent of the protocol (range, 0.75-0.91). Various combinations of acquisition protocols and jaw position did not influence the CMA evaluation. Erosion was overdiagnosed in protocols with larger voxel sizes and the detection of osteophytes greater in images with smaller voxel sizes. The anteroposterior dimension was greater in the open jaw position (p < .05). Conclusion:CBCT protocols using reduced radiation exposure from the CBCT machine evaluated in this study can be used to assess condylar morphology, dimension, position and excursion, without compromising diagnostic performances for these parameters.

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Section: Methodsmentioning

confidence: 99%

“…After 30 days, 20% of the sample for all diagnostic tasks was reevaluated to calculate the intraexaminer agreement. 13…”

Section: Condylar Excursion Subjective Classificationmentioning

confidence: 99%

Do cone‐beam computed tomography low‐dose protocols affect the evaluation of the temporomandibular joint?

Reis

Gaêta‐Araujo

Rosado

et al. 2022

J of Oral Rehabilitation

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show abstract

“…To assess the reproducibility of the method, 25 subjects were randomly selected and all the measurements were repeated by the same operator (CS), at least with one month interval [24]. The random error was calculated using the ICC (intraclass correlation coefficient) and the systematic error by the paired Student T-test for all pairs of variables [24,25]. Wilcoxon's test was performed for the two variables that rejected normality with the Shapiro-Wilk test (length of left styloid process and SNA angle).…”

Section: Statistical and Error Analysismentioning

confidence: 99%

Relationship Between Styloid Process Size and the Skeletal Craniofacial Pattern: A Cross-Sectional Study

Santos¹,

Godinho²,

Jardim³

et al. 2020

DOBCR

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Objective: The purpose of this correlation study was to evaluate a possible association between the styloid process size and different craniofacial skeletal patterns, in the sagittal and the vertical planes. Methods: 59 consecutive orthodontic adult patients were selected. The styloid process length was measured on pretreatment panoramic radiographs and the cephalometric skeletal variables on lateral cephalometric radiographs. Data were analyzed using independent sample T-Tests, Mann-Whitney U Tests and Spearman´s partial correlations (=5%). Results: Males exhibited longer styloid processes than females (p=0.029), with a mean difference of 7.5mm. Within each individual, right and left styloid process length was similar (r= 0.77; p<0.001). No relationship was found between the size of the styloid process and the sagittal skeletal pattern. A moderate significant correlation was present between the size of the styloid process and some vertical cephalometric skeletal variables: Ar-Go-Me (r=0.32; p=0.02), PFH/AFH (r=-0.29; p=0.03) and MP-SN (r=0.28; p=0.03). Conclusion: Longer styloid processes tend to be associated with high angle skeletal patterns. Orthodontists, general dentists and oral surgeons should be aware that elongation of the styloid process is more frequently verified in hyperdivergent individuals.

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“…Some statistical tests like paired t -test, the intraclass correlation and the Bland-Altman method can also help in the determination of systematic errors. [ 10 11 12 ]…”

Section: Introductionmentioning

confidence: 99%

Statistical significance or clinical significance? A researcher's dilemma for appropriate interpretation of research results

Sharma

2021

Saudi J Anaesth

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It is incredibly essential that the current clinicians and researchers remain updated with findings of current biomedical literature for evidence-based medicine. However, they come across many types of research that are nonreproducible and are even difficult to interpret clinically. Statistical and clinical significance is one such difficulty that clinicians and researchers face across many instances. In simpler terms, the P value tests all hypothesis about how the data were produced (model as whole), and not just the targeted hypothesis that it is intended to test (such as a null hypothesis) keeping in mind how reliable are the of the research results. Most of the times it is misinterpreted and misunderstood as a measure to judge the results as clinically significant. Hence this review aims to impart knowledge about “P” value and its importance in biostatistics, also highlights the importance of difference between statistical and clinical significance for appropriate interpretation of research results.

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Error of the method: what is it for?

Cited by 14 publications

References 4 publications

Do cone‐beam computed tomography low‐dose protocols affect the evaluation of the temporomandibular joint?

Do cone‐beam computed tomography low‐dose protocols affect the evaluation of the temporomandibular joint?

Relationship Between Styloid Process Size and the Skeletal Craniofacial Pattern: A Cross-Sectional Study

Statistical significance or clinical significance? A researcher's dilemma for appropriate interpretation of research results

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