scholarly journals Maxillary and mandibular anterior crown width/height ratio and its relation to various arch perimeters, arch length, and arch width groups

2015 ◽  
Vol 09 (04) ◽  
pp. 490-499 ◽  
Author(s):  
Fazal Shahid ◽  
Mohammad Khursheed Alam ◽  
Mohd Fadhli Khamis
Keyword(s):  
Sex Differences ◽  
Sample Size ◽  
Analysis Of Variance ◽  
Significant Relation ◽  
Height Ratio ◽  
Mean Values ◽  
Comprehensive Management ◽  
Arch Width ◽  
Crown Width ◽  
Maxilla And Mandible

ABSTRACT Objective: To investigate the maxillary and mandibular anterior crown width/height ratio and its relation to various arch perimeters, arch length, and arch width (intercanine, interpremolar, and intermolar) groups. Materials and Methods: The calculated sample size was 128 subjects. The crown width/height, arch length, arch perimeter, and arch width of the maxilla and mandible were obtained via digital calliper (Mitutoyo, Japan). A total of 4325 variables were measured. The sex differences in the crown width and height were evaluated. Analysis of variance was applied to evaluate the differences between arch length, arch perimeter, and arch width groups. Results: Males had significantly larger mean values for crown width and height than females (P ≤ 0.05) for maxillary and mandibular arches, both. There were no significant differences observed for the crown width/height ratio in various arch length, arch perimeter, and arch width (intercanine, interpremolar, and intermolar) groups (P ≤ 0.05) in maxilla and mandible, both. Conclusions: Our results indicate sexual disparities in the crown width and height. Crown width and height has no significant relation to various arch length, arch perimeter, and arch width groups of maxilla and mandible. Thus, it may be helpful for orthodontic and prosthodontic case investigations and comprehensive management.

scholarly journals Impact of comprehensive management on clinical outcomes in hypertensive patients with coronary artery disease: HIJ-CREATE sub-study

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
H Ogawa ◽  
H Sekiguchi ◽  
K Jujo ◽  
E Kawada-Watanabe ◽  
H Arashi ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Primary Outcome ◽  
Ldl Cholesterol ◽  
Lipid Lowering ◽  
Hypertensive Patients ◽  
Mean Values ◽  
Comprehensive Management ◽  
The Mean ◽  
Artery Disease

Abstract Background There are limited data on the effects of blood pressure (BP) control and lipid lowering in secondary prevention of coronary artery disease (CAD) patients. We report a secondary analysis of the effects of BP control and lipid management in participants of the HIJ-CREATE, a prospective randomized trial. Methods HIJ-CREATE was a multicenter, prospective, randomized, controlled trial that compared the effects of candesartan-based therapy with those of non-ARB-based standard therapy on major adverse cardiac events (MACE; a composite of cardiovascular death, non-fatal myocardial infarction, unstable angina, heart failure, stroke, and other cardiovascular events requiring hospitalization) in 2,049 hypertensive patients with angiographically documented CAD. In both groups, titration of antihypertensive agents was performed to reach the target BP of <130/85 mmHg. The primary endpoint was the time to first MACE. Incidence of endpoint events in addition to biochemistry tests and office BP was determined during the scheduled 6, 12, 24, 36, 48, and 60-month visits. Achieved systolic BP and LDL-Cholesterol (LDL-C) level were defined as the mean values of these measurements in patients who did not develop MACEs and as the mean values of them prior to MACEs in those who developed MACEs during follow-up. Results During a median follow-up of 4.2 years (follow-up rate of 99.6%), the primary outcome occurred in 304 patients (30.3%). Among HIJ-CREATE participants, 905 (44.2%) were prescribed statins on enrollment. Kaplan–Meier curves for the primary outcome revealed that there was no relationship between statin therapy and MACEs in hypertensive patients with CAD. The original HIJ-CREATE population was divided into 9 groups based on equal tertiles based on mean achieved BP and LDL-C during follow-up. For the analysis of subgroups, estimates of relative risk and the associated 95% CIs were generated with a Cox proportional-hazards model (Figure 1). The relation between LDL cholesterol level and hazard ratios for MACEs was nonlinear, with a significant increase of MACEs only in the patients with inadequate controlled LDL-C level even in the patients with tightly controlled BP. Conclusions The results of the post-hoc analysis of the HIJ-CREATE suggest that clinicians should pay careful attention to conduct comprehensive management of lipid lowering even in the contemporary BP lowering for the secondary prevention in hypertensive patients with CAD. Figure 1 Funding Acknowledgement Type of funding source: None

scholarly journals Height difference between the vestibular and palatal walls and palatal width: a cone beam computed tomography approach

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
P. López-Jarana ◽  
C. M. Díaz-Castro ◽  
A. Falcão ◽  
C. Falcão ◽  
J. V. Ríos-Santos ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Bone Thickness ◽  
Height Difference ◽  
Mean Values ◽  
The Mean ◽  
Maxilla And Mandible ◽  
Palatal Bone ◽  
Two Parameters

Abstract Background The objective of this study was to measure two parameters involved in tri-dimensional implant planning: the position of the buccal and palatal bone wall and the palatal thickness. Methods Cone beam computed tomography (CBCT) images (Planmeca ProMax 3D) of 403 teeth (208 upper teeth and 195 lower teeth) were obtained from 49 patients referred to the Dental School of Seville from January to December 2014. The height difference between the palatal and buccal walls was measured on the most coronal point of both walls. The thickness of the palatal wall was measured 2 mm from the most coronal point of the palatal wall. Results The mean values in the maxilla were 1.7 ± 0.9 mm for central and lateral incisors, 2.2 ± 1.7 mm for canines, 1.6 ± 0.9 mm for premolars and 1.9 ± 1.5 mm for molars. In the lower jaw, the mean values were 1.3 ± 0.8 mm for incisors, 1.7 ± 1.2 mm for canines, 2.3 ± 1.3 mm for premolars, and 2.6 ± 1.7 mm for molars. In the upper jaw, more than 55% of maxillary teeth (excluding second premolars and molars) presented mean height differences greater than 1 mm. In the mandible, more than 60% of incisors showed a buccal bone thickness of 1 mm from the apical to lingual aspect. All teeth except the second premolar presented a buccal wall located more than 1 mm more apically than the lingual bone wall. Conclusions The buccal bone wall is located more apically (greater than 1 mm) than the palatal or lingual table in most of the cases assessed. The thickness of the palatal or lingual table is also less than 2 mm in the maxilla and mandible, except in the upper canines and premolars and the lower molars.

scholarly journals No one accelerometer-based physical activity data collection protocol can fit all research questions

2019 ◽  
Author(s):  
Patrick Bergman ◽  
Maria Hagströmer
Keyword(s):  
Physical Activity ◽  
Sample Size ◽  
Large Sample Size ◽  
Intensity Level ◽  
Sample Sizes ◽  
Activity Data ◽  
Convenience Sample ◽  
Mean Values ◽  
Repeated Observations ◽  
Measurement Protocol

Abstract BACKGROUND Measuring physical activity and sedentary behavior accurately remains a challenge. When describing the uncertainty of mean values or when making group comparisons, minimising Standard Error of the Mean (SEM) is important. The sample size and the number of repeated observations within each subject influence the size of the SEM. In this study we have investigated how different combinations of sample sizes and repeated observations influence the magnitude of the SEM. METHODS A convenience sample were asked to wear an accelerometer for 28 consecutive days. Based on the within and between subject variances the SEM for the different combinations of sample sizes and number of monitored days was calculated. RESULTS Fifty subjects (67% women, mean±SD age 41±19 years) were included. The analyses showed, independent of which intensity level of physical activity or how measurement protocol was designed, that the largest reductions in SEM was seen as the sample size were increased. The same magnitude in reductions to SEM was not seen for increasing the number of repeated measurement days within each subject. CONCLUSION The most effective way of reducing the SEM is to have a large sample size rather than a long observation period within each individual. Even though the importance of reducing the SEM to increase the power of detecting differences between groups is well-known it is seldom considered when developing appropriate protocols for accelerometer based research. Therefore the results presented herein serves to highlight this fact and have the potential to stimulate debate and challenge current best practice recommendations of accelerometer based physical activity research.

scholarly journals ANALISIS KOMPARASI PRESTASI BELAJAR DITINJAU DARI MINAT BELAJAR DAN IPK PADA MATA KULIAH STATISTIKA

2016 ◽  
Vol 8 (2) ◽  
pp. 1
Author(s):  
Herlina Herlina
Keyword(s):  
Sample Size ◽  
Student Learning ◽  
Analysis Of Variance ◽  
Homogeneity Test ◽  
Learning Achievement ◽  
Normality Test ◽  
Data Processor ◽  
The Subject ◽  
The Difference ◽  
Learning Interest

The purpose of this study is to know the difference of the average of students learning achievement in the subject of Statistics in views of student learning interest and students cumulative achhievement index (IPK) and also to know the interaction between students learning interests and IPK. The population of this research are 209 students with the sample size is 146. The data in this research are analyzed using the tests of model assumptions : a normality test in eleven times, a homogeneity test in seven times, and an analysis of variance (ANOVA) using SPSS data processor. The results of this study is that there is a difference of the average of students learning achievement between high, medium and low learning interests with sig 0,03 <0,05, that between IPK <3,00 and IPK≥3,00 with sig 0,000<0,05, and there is no interaction between learning interest and IPK with sig 0,936> 0,05.

scholarly journals Was facial width-to-height ratio subject to sexual selection pressures? A life course approach

2020 ◽  
Author(s):  
Carolyn R. Hodges-Simeon ◽  
Graham Albert ◽  
George B. Richardson ◽  
Timothy S. McHale ◽  
Seth M. Weinberg ◽  
...  
Keyword(s):  
Sex Differences ◽  
Sexual Selection ◽  
Current Evidence ◽  
Facial Morphology ◽  
Facial Growth ◽  
Height Ratio ◽  
Lower Face ◽  
Male Adolescents ◽  
Classic Pattern ◽  
Facial Development

AbstractSexual selection researchers have traditionally focused on adult sex differences; however, the schedule and pattern of sex-specific ontogeny can provide insights unobtainable from an exclusive focus on adults. Recently, it has been debated whether facial width-to-height ratio (fWHR; bi-zygomatic breadth divided by midface height) is a human secondary sexual characteristic (SSC). Here, we review current evidence, then address this debate using ontogenetic evidence, which has been under-explored in fWHR research. Facial measurements collected from males and females aged 3 to 40 (Study 1; US, n=2449), and 7 to 21 (Study 2; Bolivia, n=179) were used to calculate three fWHR variants (which we call fWHRnasion, fWHRstomion, and fWHRbrow) and two other common facial masculinity ratios (facial width-to-lower-face-height ratio, fWHRlower, and cheekbone prominence). We test whether the observed pattern of facial development exhibits patterns indicative of SSCs, i.e. differential adolescent growth in either male or female facial morphology leading to an adult sex difference. Results showed that only fWHRlower exhibited both adult sex differences as well as the classic pattern of ontogeny for SSCs—greater lower-face growth in male adolescents relative to females. fWHRbrow was significantly wider among both pre- and post-pubertal males in the 2D sample; post-hoc analyses revealed that the effect was driven by large sex differences in brow height, with females having higher placed brows than males across ages. In both samples, all fWHR measures were inversely associated with age; that is, human facial growth is characterized by greater relative growth in the mid-face and lower face relative to facial width. This trend continues even into middle adulthood. BMI was also a positive predictor of most of the ratios across ages, with greater BMI associated with wider faces. Researchers collecting data on fWHR should target fWHRlower and fWHRbrow and should control for both age and BMI.

Belief in Supernatural Phenomena and Locus of Control

1973 ◽  
Vol 32 (3_suppl) ◽  
pp. 1159-1162 ◽  
Author(s):  
Rick J. Scheidt
Keyword(s):  
Sex Differences ◽  
Individual Differences ◽  
Locus Of Control ◽  
Analysis Of Variance ◽  
Psychology Students ◽  
Attitude Questionnaire ◽  
Religion And Science ◽  
Male And Female ◽  
Positive Attitudes ◽  
Superstitious Beliefs

It is hypothesized that Rotter's I-E variable mediates individual differences in supernatural and superstitious beliefs, with externals exhibiting more positive attitudes toward such phenomena. An approximately equal number of male and female introductory psychology students were selected as externals ( N = 20) and internals ( N = 23) from upper and lower quartiles of the Rotter I-E scale. All Ss were administered an attitude questionnaire assessing beliefs toward several paranormal, occult, and pseudoscientific phenomena. Analysis via a 2 × 2 (I-E Control × Sex) analysis of variance strongly confirmed the hypothesis ( p < .01). Although not predicted, females, regardless of I-E status, were much more favorably disposed toward such phenomena than males ( p < .01). Differences in more general attitudes toward both religion and science are suggested as mediating the over-all I-E and sex differences.

Normal basic 2D echocardiographic values to screen and follow up the athlete's heart from juniors to adults: What is known and what is missing. A critical review

2019 ◽  
Vol 27 (12) ◽  
pp. 1294-1306
Author(s):  
Massimiliano Cantinotti ◽  
Martin Koestenberger ◽  
Giuseppe Santoro ◽  
Nadia Assanta ◽  
Eliana Franchi ◽  
...  
Keyword(s):  
Sample Size ◽  
Critical Review ◽  
Normal Values ◽  
Three Dimensional ◽  
Final Analysis ◽  
Free Text ◽  
Medical Subject Headings ◽  
Mean Values ◽  
Complete Dataset ◽  
Sport Type

In the last few years, multiple echocardiographic nomograms have been published. However, normal values calculated in the general population are not applicable to athletes, whose hearts may be enlarged and hypercontractile. Accordingly, athletes require specific nomograms. Our aim is to provide a critical review of echocardiographic nomograms on two-dimensional (2D) measures for athletes. We performed a systematic search in the National Library of Medicine for Medical Subject Headings and free text terms including echocardiography, athletes, normal values and nomograms. The search was refined by adding the keywords heart, sport, elite, master, children and young. Twenty-eight studies were selected for the final analysis. Our research revealed that currently available ranges of normality for athletes reported by different authors are quite consistent, with limited exceptions (e.g. atria, aorta). Numerical and methodological limitations, however, emerged. Numerical limitations included a limited sample size (e.g. < 450 subjects) of the population assessed and the paucity of data in women, non-Caucasian athletes, and junior and master athletes. Some data on M-mode measurements are available, while those for some specific structures (e.g. left atrial (LA) area and volumes, right ventricular diameters and aorta) are limited or rare (e.g. LA area). There was heterogeneity in data normalization (by gender, sport type and ethnicity) and their expression was limited to mean values ( Z-scores have rarely been employed), while variability analysis was often lacking or incomplete. We conclude that comprehensive nomograms using an appropriate sample size, evaluating a complete dataset of 2D (and three-dimensional) measures and built using a rigorous statistical approach are warranted.

Notizen: Der Einfluß der Stichprobengröße auf das Ergebnis einer Varianzanalyse bei gestreckten und gestauchten Mutanten von Pisum sativum / The Influence of the Sample Size upon the Result of an Analysis of Variance in Long-Stemmed and Short-Stemmed Mutants of Pisum sativum

1976 ◽  
Vol 31 (3-4) ◽  
pp. 216-218
Author(s):  
Ernst Weber
Keyword(s):  
Pisum Sativum ◽  
Sample Size ◽  
Analysis Of Variance ◽  
Epidermal Cells ◽  
Normal Type

Abstract The length of the epidermal cells at the 10th intemode was studied by means of the analysis of variance in the normal type and 6 of each long-stemmed and short-stemmed mutants of Pisum sativum. The effect of samples of four different sizes on the result of the analysis of variance was investigated. It was found that, based on 78 comparisons of 13 means each, an increase of the sample size from ti= 25 to n = 100 increases the significant differences from 53 to 64.

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