MULTIPLANAR RECONSTRUCTED CT STUDY OF NORMAL ACETABULUM – INCLINATION ANGLE, ANTEVERSION ANGLE AND ACETABULAR DEPTH

2015 ◽  
Vol 77 (6) ◽  
Author(s):  
Mohd Shukry Mohd Khalid ◽  
Rohaizan Yunus
Keyword(s):  
Age Groups ◽  
Cross Sectional Study ◽  
Group Differences ◽  
Hip Implants ◽  
Cross Sectional ◽  
Group 4 ◽  
Replacement Procedure ◽  
Gender And Age ◽  
Significant Difference ◽  
Males And Females

Knowledge of acetabular morphometry parameters namely acetabular inclination and anteversion angles beside acetabular depth aid surgeons to accurately plan hip replacement procedure. The current hip implants designed based on Caucasian population which may not accurately match morphologic features of our population. Our objective is to determine normal acetabular morphometric parameters from CT scans of Malay patients in Hospital Universiti Sains Malaysia and compare gender and age group differences. A cross-sectional study was done within 18 months duration from November 2010 till May 2012. A total of 133 samples collected and divided into four age groups. Mean and standard deviations for all parameters were determined. No significant difference between acetabular parameters among males and females (p>0.001). Significant difference between age groups noted, mainly in group 1 (18 to 30 years) with group 4 (51 to 60 years) in all parameters. As for conclusion, no significant parameter differences between genders, hence no indication for gender or population specific hip implants. Significant differences noted when parameters compared between age groups, especially between the two extremes of age groups.

scholarly journals Correlation between Chest X-Ray Severity in COVID-19 and Age in Mexican-Mestizo Patients: An Observational Cross-Sectional Study

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Arturo Albrandt-Salmeron ◽  
Ruby Espejo-Fonseca ◽  
Ernesto Roldan-Valadez
Keyword(s):  
Age Groups ◽  
Rank Correlation ◽  
Cross Sectional Study ◽  
European Population ◽  
Cross Sectional ◽  
Mexican Mestizo ◽  
X Ray ◽  
Significant Difference ◽  
Chest X Ray ◽  
Males And Females

Introduction. Chest X-ray (CXR) is used for the initial triage of patients with suspected COVID-19. Studies of CXR scoring in the European population found a higher score in males than in females and significantly correlated with age. Because there have not been studies in the Mexican-mestizo community, we aimed to compare the differences in CXR scores between males and females and their correlation with age after controlling comorbidities like diabetes and hypertension. Materials and Methods. A retrospective study of 1000 CXR of Mexican-mestizo patients with SARS-CoV-2 infection, confirmed by RT-PCR. Significant differences between age, age groups, symptoms, comorbidities, and CXR scores between males and females used the Mann–Whitney U , Chi-square tests ( χ 2 ), and Kruskal–Wallis tests. The relationship between the total CXR score and age was measured with the Spearman rank correlation coefficient (Rs); partial correlation analysis controlled the effect of symptoms, risk factors, and comorbidities. Results. The total CXR score did not show a difference between males and females grouped by age. There was a positive, low correlation between the total CXR score and age in males, Rs = 0.260 , p < 0.001 ( N = 616 ), and in females, Rs = 0.170 , p = 0.001 ( N = 384 ). Age only explained a <9% variance of CXR severity. Rs decreased its magnitude (from Rs = 0.152 to Rs = 0.046 ) and lost its significance (change in p value from p < 0.001 to p = 0.145 ) after controlling the effect of hypertension. Conclusions. There is no significant difference in CXR score between males and females in the Mexican-mestizo population grouped by age. Hypertension cancels the significance of CXR severity with age pointing to its role in the pathophysiology of COVID-19. Further research using stratified groups by age and gender in other populations needs to be published.

scholarly journals Teacher Discrimination Reduces School Performance of African American Youth: Role of Gender

2018 ◽  
Vol 8 (10) ◽  
pp. 183 ◽  
Author(s):  
Shervin Assari ◽  
Cleopatra Howard Caldwell
Keyword(s):  
African American ◽  
School Performance ◽  
African American Youth ◽  
National Sample ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Grade Point ◽  
Significant Difference ◽  
Males And Females

Background: Gender may alter African Americans’ vulnerability to discrimination. The type of outcomes that follow exposure to discrimination may also be gender-specific. Although teacher discrimination is known to deteriorate school performance, it is yet unknown whether male and female African American youth differ in the effect of teacher discrimination on school performance. Objective: This cross-sectional study explored the moderating role of gender on the effect of teacher discrimination on school performance in a national sample of African American youth. Methods: The National Survey of American Life-Adolescent Supplement (NSAL-A) enrolled a nationally representative sample (n = 810) of 13–17-year-old African American youth. Demographic factors, socioeconomic status, teacher discrimination, and school performance (grade point average, GPA) were measured. Linear multivariable regression models were applied for data analysis. Results: Males and females reported similar levels of perceived teacher discrimination. In the pooled sample, higher teacher discrimination was associated with lower school performance among African American youth (b = −0.35; 95% confidence interval (CI) = −0.49 to −0.22). Gender interacted with perceived teacher discrimination (b = 12; 95% CI = 0.24–2.02), suggesting a significant difference between males and females in the magnitude of the association between perceived teacher discrimination and GPA. In stratified models, perceived teacher discrimination was associated with worse school performance of females (b = −12; 95% CI = −0.03 to −2.78) but not males (b = 0.01; 95% CI = −0.07 to 0.08). Conclusion: In line with previous studies, gender was found to alter the vulnerability of African American youth to perceived discrimination. African American boys and girls may differ in their sensitivity to the effects of teacher discrimination on school performance.

The influence of varying maxillary central incisor vertical dimension on perceived smile aesthetics

2019 ◽  
Vol 46 (2) ◽  
pp. 137-142
Author(s):  
Elis Janaina Lira dos Santos ◽  
Alana Moura Xavier Dantas ◽  
Raíssa Marçal Vilela ◽  
Karina Jerônimo Rodrigues Santiago de Lima ◽  
Rejane Targino Soares Beltrão
Keyword(s):  
Age Groups ◽  
Educational Background ◽  
Cross Sectional Study ◽  
Central Incisor ◽  
Chi Square ◽  
Cross Sectional ◽  
Exact Test ◽  
Maxillary Central Incisor ◽  
Significant Difference ◽  
Chi Square Test

Objective: To evaluate patient perception of the smile focused on analysis of the upper incisors. Design: Cross-sectional study. Setting: Department of Clinical and Social Dentistry at Federal University of Paraíba, João Pessoa, Brazil. Participants: The sample consisted of 135 individuals (73 women and 62 men). Methods: Images with different characteristics associated with the incisal edges were shown at random and analysed using a Likert scale. Data were analysed using the Chi-square test or Fisher’s exact test with a statistically significant difference ( P < 0.05). Results: Smile I (difference of 1.5 mm in relation to the central incisor and lateral) was considered the most aesthetic, while Smile III (no difference in height between the central and lateral incisors) was the least aesthetic. A significant difference was found between perception of smile II (difference of 1 mm in relation to the central incisor and lateral) and age groups ( P < 0.005), with 31% (n = 13) of individuals aged 45–64 years considering smile II as not pleasant, 4.4% (n = 2) aged 15–24 years and 8.3% (n=4) aged 25–44 years and 4.4% (n = 2) aged 15–24 years considering the same. A significant difference was also found in relation to educational background of the assessor and smile perception, with smile III ( P = 0.0441) and smile IV ( P = 0.0053) considered the most aesthetic ( P = 0.0116). Conclusion: The smile considered most attractive among the sample was that with 1.5 mm steepness between the central and lateral incisors, while a flat smile arc was considered least attractive.

scholarly journals Investigating social media statistics of usage and its determinant factors in students of Kurdistan University of Medical Sciences in 2018: A cross-sectional study.

2021 ◽  
Author(s):  
Hiva Bozorgpanah ◽  
Ghobad Moradi ◽  
Pourya Bahrami ◽  
Elham Noori ◽  
Mohammad Pourya Ezati ◽  
...  
Keyword(s):  
Social Media ◽  
Age Groups ◽  
Cross Sectional Study ◽  
Medical Sciences ◽  
Cross Sectional ◽  
Determinant Factors ◽  
Significant Difference ◽  
Improper Use ◽  
Spss Software ◽  
Use Of Social Media

Abstract Background and Aim: the present study was conducted to investigate social media statistics of usage and its determinant factors in students of Kurdistan University of Medical Sciences in 2018.Materials and Methods: This study is a cross-sectional-analytical study. The total of 380 students of Kurdistan University of Medical Sciences were randomly selected by Probability Proportional to Size Sampling method, from the lists of the students in each faculty. The data collection tool was a researcher-made questionnaire, organized in four sections. Data analysis was done using descriptive and inferential statistics by SPSS software version 21.Results: Based on the results of this study 373 (98.2%) of the sample students were on social media, which the most popular ones among them were Telegram (94.1%), Instagram (78.8%) and Whatsapp (61.9%), respectively. The average time spent on social media among students was reported to be 2.78 hours per day and is a significant difference between age groups in terms of attitudes toward using social media (P = 0.031).Conclusion: the results of this study suggested that the majority of students use social media. Since improper use of social media can exert unfortunate effects on different aspects of life of students, and negatively influence their education.

scholarly journals Relationship of occupational health and safety training with health literacy among employees working in the various lines of business

2020 ◽  
Vol 39 (3) ◽  
pp. 171
Author(s):  
Nergiz Sevinc ◽  
Burcu Korkut
Keyword(s):  
Health Literacy ◽  
Occupational Health ◽  
Age Groups ◽  
Health And Safety ◽  
Occupational Health And Safety ◽  
Cross Sectional Study ◽  
Adult Health ◽  
Cross Sectional ◽  
Significant Difference ◽  
Scale Scores

Background<br />Health literacy is vital for people’s ability to manage health. It has been known for a long time that the importance of education in increasing health literacy is an undeniable fact. The first aim of this study was to investigate the health literacy levels of employees working in different business lines receiving service from the occupational health and safety unit. The second aim was to reveal how health literacy levels are affected according to the training duration.<br /><br />Methods<br />A cross-sectional study was conducted on 202 employees receiving service from the Karabuk occupational health and safety unit. The employees were divided into three groups as workers, officers and others. All employees were given the questionnaire consisting of 31 questions including sociodemographic characteristics and the adult health literacy scale. A face-to-face interview was performed with each of the employees. Kruskal-Wallis H and Mann-Whitney U tests were used to analyze the data.<br /><br />Results<br />The range of adult health literacy scale scores of the employees was 4-23. There was no significant difference in adult health literacy scale scores between age groups (p=0.38). The percentage of employees who received more than 16 hours training course was 19.3%, 20.6%, and 46.7% for workers, civil servants and other employees, respectively. Adult health literacy scale scores increased in proportion to the amount of training the employees received (p=0.001).<br /><br />Conclusion<br />This study reveals that occupational health training has a positive effect on health literacy.

scholarly journals Knowledge, Attitudes and Practice of Dental Implants among Dental Interns in Saudi Arabia – A Cross-Sectional Study

2020 ◽  
Vol 14 (1) ◽  
pp. 440-449
Author(s):  
Khaled Alzahrani ◽  
Abdulrahman Mohammed Alnafisah ◽  
Khalid Gohormallah Alzahrani ◽  
Khalid Ghalib Alharbi
Keyword(s):  
Saudi Arabia ◽  
Dental Implants ◽  
Clinical Skills ◽  
Sampling Technique ◽  
Practical Experience ◽  
Cross Sectional Study ◽  
Chi Square ◽  
Cross Sectional ◽  
Significant Difference ◽  
Males And Females

Objective: The aim of the study is to assess knowledge, attitude and practices of dental implants among dental interns in Saudi Arabia Materials and Methods: A self-designed, close-ended questionnaire was distributed among 205 interns chosen by stratified random sampling technique. The questionnaire consisted of 28 items pertaining to demographic characteristics, knowledge and practices of dental implants. Responses were coded and entered into spreadsheet software (Microsoft Excel 16.0.) and analyzed using Statistical Package for Social Sciences (SPSS, IBM Version 22.0) and contingency tables and chi-square test (χ2). Results: The majority of the participants were males (64.4%), between 24-26 years of age (64%) and had a GPA between 4-5 (63.4%). The majority of the participants gained knowledge of dental implants through theoretical lectures (98.5%), and most of them (80%) knew, what material, an implant was made up of. Almost all participants (91.7%) knew that dental implants had surface modifications. Most (64.4%) believed that case selection is the most important criteria for the success of dental implant therapy, and this differed significantly among participants with respect to GPA (p=0.03). Many participants (60%) believed that the most important advantage of dental implants over fixed prosthesis is that reduction of adjacent tooth is not needed, and this differed significantly between males and females (p=0.026). There was a significant difference (p<0.001) between males and females when it came to confidence in independently restoring teeth using dental implants. 63% of the participants were confident to use dental implants in their future practice. Conclusion: Knowledge of dental implants among dental interns is satisfactory, but this study reveals that participants lack practical experience and would like to acquire more clinical skills. Limitations: The response rate of participants from each university was low, which made comparisons between different universities difficult because sample size from some universities was very small, which could not produce statistically accurate results.

scholarly journals Prevalence and risk factors for myopia among school children in Aba, Nigeria

2017 ◽  
Vol 76 (1) ◽  
Author(s):  
Uchenna C. Atowa ◽  
Alvin J. Munsamy ◽  
Samuel O. Wajuihian
Keyword(s):  
School Children ◽  
Refractive Error ◽  
Age Groups ◽  
Public Health Problem ◽  
Sampling Technique ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Level Of Education ◽  
Multi Stage ◽  
Significant Difference

Aim: To study the prevalence of myopia among school children in Aba, Nigeria.Methods: This cross-sectional study was conducted in public and private (primary and secondary) schools. A multi-stage random sampling technique was used for selecting participants aged between 8 and 15 years from 12 schools in Aba, Nigeria. Data were analysed for 1197 children who underwent a comprehensive eye examination. The children were divided according to the following criteria: age groups (group 1 [8–11 years] or group 2 [12–15 years]), gender (male or female), level of education (primary or secondary) and type of school (public or private). Myopia was defined as spherical equivalent refraction (SER) ≤ -0.50 D in the poorer eye.Results: The prevalence of myopia was estimated to be 2.7%. Of the 96 children with refractive error, 78.1% were uncorrected. In using logistic regression analysis, risk of developing myopia was associated with older age groups (odds ratio [OR]: 1.20; 95% confidence interval [CI], 0.16–9.11; p < 0.010) and higher level of education (OR: 1.73; 95% CI, 1.05–2.86; p < 0.030). There was no significant difference in myopia prevalence between male and female children (p = 0.89).Conclusion: Although the prevalence of myopia and overall prevalence of refractive error in school children in Aba were low, the high prevalence of uncorrected refractive error is a significant public health problem. An effective and sustainable children’s vision screening programme is needed to prevent visual impairment and blindness.

Behavior of fetal longitudinal myocardial fibers assessed by speckle tracking to obtain strain and strain rate values for low-risk pregnancies

2020 ◽  
Vol 48 (2) ◽  
pp. 144-152
Author(s):  
Mariana Biancardi ◽  
Renato Augusto Moreira de Sa
Keyword(s):  
Strain Rate ◽  
Gestational Age ◽  
Speckle Tracking ◽  
Age Groups ◽  
Cross Sectional Study ◽  
Observer Agreement ◽  
Cross Sectional ◽  
Strain And Strain Rate ◽  
Significant Difference ◽  
Myocardial Fibers

AbstractObjectiveTo analyze the behavior of fetal longitudinal myocardial fibers assessed by speckle tracking (STE) after fetal viability.MethodsA cross-sectional study was performed in 156 women with normal singleton pregnancies from 22 to 31 weeks of gestation. Strain (S) and strain rate (SR) values were measured in both ventricles during the fetal cardiac cycle. The population was divided into five gestational age groups based on 2-week intervals. The correlations of maternal variables with the S and SR variables and intra-observer analysis were performed.ResultsThere was a significant difference in the S and SR values of the left ventricle (LV) among the gestational age groups (P = 0.007). Significantly higher S and SR values were observed in early age groups demonstrating reductions in LV S and SR values at 26 weeks, followed by stabilization. For the right ventricle (RV), there was no significant difference between gestational age groups. Significant intra-observer agreement was observed for S values of the RV (P = 0.008) and LV (P = 0.0004) and SR values of the RV (P = 0.0001) and LV (P = 0.015).ConclusionDecreases in the S and SR values of the LV occurred after 26 weeks, followed by stabilization. No significant difference was observed in the S or SR value of the RV among the gestational age groups, and no significant association of any maternal variable evaluated with S and SR values was observed. Significant intra-observer agreement was obtained among the results.

Keratoconus staging by decades: a baseline ABCD classification of 1000 patients in the Homburg Keratoconus Center

2020 ◽  
pp. bjophthalmol-2020-316789
Author(s):  
Elias Flockerzi ◽  
Kassandra Xanthopoulou ◽  
Susanne Christiane Goebels ◽  
Elena Zemova ◽  
Sonia Razafimino ◽  
...  
Keyword(s):  
Age Groups ◽  
Cross Sectional Study ◽  
Grading System ◽  
Matched Pairs ◽  
Corneal Curvature ◽  
Cross Sectional ◽  
Stage Distribution ◽  
Significant Difference ◽  
Advanced Stages

BackgroundThis retrospective cross-sectional study aims to analyse the keratoconus (KC) stage distribution at different ages within the Homburg Keratoconus Center (HKC).Methods1917 corneae (1000 patients) were allocated to decades of age, classified according to Belin’s ABCD KC grading system and the stage distribution was analysed.Results73 per cent (n=728) of the patients were males, 27% (n=272) were females. The highest KC prevalence occurred between 21 and 30 years (n=585 corneae, 294 patients). Regarding anterior (A) and posterior (B) curvature, the frequency of A was significantly higher than B in all age groups for stage 0, 1 and 2 (A0>B0; A1>B1; A2>B2; p<0.03, Wilcoxon matched-pairs test). There was no significant difference between the number of A3 and B3, but significantly more corneae were classified as B4 than A4 in all age groups (p<0.02). The most frequent A|B combinations were A4|B4 (n=451), A0|B0 (n=311), A2|B4 (n=242), A2|B2 (n=189) and A1|B2 (n=154). Concerning thinnest pachymetry (C), most corneae in all age groups were classified as C0>C1>C2>C3>C4 (p<0.04, Wilcoxon matched-pairs test). For the best distance visual acuity (D), a significantly higher number of corneae were classified as D1 compared to D0 (p<0.008; D1>D0>D2>D3>D4).ConclusionThe stage distributions in all age groups were similar. Early KC rather becomes manifest in the posterior than the anterior corneal curvature whereas advanced stages of posterior corneal curvature coincide with early and advanced stages of anterior corneal curvature. Thus, this study emphasises the necessity of posterior corneal surface assessment in KC as enabled by the ABCD grading system.

A Cross-Sectional Study of Moral Development in the South African Context

1996 ◽  
Vol 78 (3) ◽  
pp. 851-859 ◽  
Author(s):  
Kevin Smith ◽  
Angina Parekh
Keyword(s):  
Moral Development ◽  
South African ◽  
Age Groups ◽  
Cross Sectional Study ◽  
The South ◽  
Cross Sectional ◽  
Black And White ◽  
Significant Difference ◽  
African Context ◽  
Moral Choices

This study has two aims, to examine aspects of Kohlberg's claims of universality within a unique research context and to explore differences in moral development between black and white South Africans. 81 participants from four different age groups were administered Form A of Kohlberg's moral judgement interviews. Analysis supported the age-relatedness of Kohlberg's stages of moral development and provided some support for the notion that the stages should be evident in various cultures. A significant difference in moral development between black and white groups in the 19- to 28-yr. age group was found. Further, black and white groups had different concerns when justifying moral choices. The results were discussed in the context of the South African system, which until recently has been one of institutionalised racial division.

Sign in / Sign up

Export Citation Format

Share Document