98 research outputs found
Adverse birth outcome: a comparative analysis between cesarean section and vaginal delivery at Felegehiwot Referral Hospital, Northwest Ethiopia: a retrospective record review [Corrigendum]
No full textAbebe Eyowas F, Negasi AK, Aynalem GE, Worku AG. Pediatric Health, Medicine and Therapeutics. 2016;7:65–70On page 65 Abel Fekadu Dadi should have been listed as an author. The incorrect author list was:Fantu Abebe Eyowas1Ashebir Kidane Negasi1Gizachew Eyassu Aynalem1Abebaw Gebeyehu Worku2The correct author list should have been:Fantu Abebe Eyowas1Ashebir Kidane Negasi1Gizachew Eyassu Aynalem1Abebaw Gebeyehu Worku2Abel Fekadu Dadi2Read the original articl
Flexible two-piece distributions for right censored survival data
No full textAn important complexity in censored data is that only partial information on the variables of interest is observed. In recent years, a large family of asymmetric distributions and maximum likelihood estimation for the parameters in that family has been studied, in the complete data case. In this paper, we exploit the appealing family of quantile-based asymmetric distributions to obtain flexible distributions for modelling right censored survival data. The flexible distributions can be generated using a variety of symmetric distributions and monotonic link functions. The interesting feature of this family is that the location parameter coincides with an index-parameter quantile of the distribution. This family is also suitable to characterize different shapes of the hazard function (constant, increasing, decreasing, bathtub and upside-down bathtub or unimodal shapes). Statistical inference is done for the whole family of distributions. The parameter estimation is carried out by optimizing a non-differentiable likelihood function. The asymptotic properties of the estimators are established. The finite-sample performance of the proposed method and the impact of censorship are investigated via simulations. Finally, the methodology is illustrated on two real data examples (times to weaning in breast-fed data and German Breast Cancer data).sponsorship: The authors are grateful to the editor, and associate editor and reviewers for their valuable comments that led to an improvement of the manuscript. The second author gratefully acknowledge support from Research Grant FWO G0D6619N of the Flemish Science Foundation, and from the C16/20/002 project of the Research Fund KU Leuven. (Flemish Science Foundation|FWO G0D6619N, Research Fund KU Leuven|C16/20/002)status: Published onlin
A hybrid hazard-based model using two-piece distributions
No full textCox proportional hazards model is widely used to study the relationship between the survival time of an event and covariates. Its primary objective is parameter estimation assuming a constant relative hazard throughout the entire follow-up time. The baseline hazard is thus treated as a nuisance parameter. However, if the interest is to predict possible outcomes like specific quantiles of the distribution (e.g. median survival time), survival and hazard functions, it may be more convenient to use a parametric baseline distribution. Such a parametric model should however be flexible enough to allow for various shapes of e.g. the hazard function. In this paper we propose flexible hazard-based models for right censored data using a large class of two-piece asymmetric baseline distributions. The effect of covariates is characterized through timescale changes on hazard progression and on the relative hazard ratio; and can take three possible functional forms: parametric, semi-parametric (partly linear) and non-parametric. In the first case, the usual full likelihood estimation method is applied. In the semi-parametric and non-parametric settings a general profile (local) likelihood estimation approach is proposed. An extensive simulation study investigates the finite-sample performances of the proposed method. Its use in data analysis is illustrated in real data examples.The authors thank the reviewers for their valuable comments that led to an improvement
of the manuscript. The second author gratefully acknowledges support from Research Grant C16/20/002
project of the Research Fund KU Leuven
Two-piece distribution based semi-parametric quantile regression for right censored data
No full textWidely used methods such as Cox proportional hazards, accelerated failure time, and Bennet proportional odds models do not model the quantiles directly, but rather allow to assess the influence of the covariates only on the location of the distribution. Quantile regression allows to assess the effects of covariates, not only on a location parameter (such as a mean or median) but also on specific percentiles of the conditional distribution. In recent years, a large family of flexible two-piece asymmetric distributions where the location parameter coincides with a specific quantile of the distribution has been studied. In a conditional (regression) setting the use of such a family of two-piece asymmetric distributions has only been investigated in the complete data case in the literature. In this paper, we propose a semi-parametric procedure to estimate the conditional quantile curves of two-piece asymmetric distributions based on right censored survival data. We use a local likelihood estimation technique in a multi-parameter functional form, via which the effect of a covariate on the location, scale, and index of the conditional survival distribution can be assessed. The finite sample performance of the estimators is investigated via simulations, and the methodology is illustrated on real data examples.The authors are grateful to an Associate Editor and two reviewers for their comments which led to an improvement of the manuscript. We thank the authors of Christou and Akritas (2019) to provide us with the R code to calculate their estimator in the SIQR model. The second author gratefully acknowledges support from Research Grant FWO G0D6619N of the Flemish Science Foundation, and from the C16/20/002 project of the Research Fund KU Leuven. The resources and services used in this work were provided by the VSC (Flemish Supercomputer Center), funded by the Research Foundation - Flanders (FWO) and the Flemish Government
Effect of Different Levels of Dried Sugar Cane Tops Inclusion on the Performance of Washera Sheep Fed Basal Diet of Grass Hay, Ethiopia
No full textCopyright: © 2015 Worku A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Background: Ruminants feed largely on crop resides as their basal diet. Despite their vast use as a livestock feed, crop residues are naturally of low quality and do not fulfill the nutrient requirement of animals. Thus, the deficit in the basal feed of quantity can be covered with sugar cane tops that are potential feed for better performance of animals. This study aimed with to evaluate the effect of different level of Dried Sugar Can tops inclusion on carcass characteristics and Economic Feasibility of Washera sheep fed a basal diet of grass hay. Methodology: A study was conducted at Bure Agricultural Technical Vocational Educational Training (ATVET) College using twenty yearling Washera sheep with initial body weight (BW) of 18.15 ± 1.85 (mean ± SD). The experimental design was randomized complete block design, and sheep were blocked into five blocks of four animals based on their initial BW and randomly assigned to one of the treatments within a block. Treatments were hay ad libitum+100 g/head/d CM for T1 and an additional 120 g, 240 g and 360 g SCT per head/day on dry matter basis for T2, T3 and T4, respectively. The experiment consisted 90 days of Growth trials followed by evaluation of carcass components at the end
Effect of play-based family-centered psychomotor/psychosocial stimulation on the development of severely acutely malnourished children under six in a low-income setting: a randomized controlled trial
No full textBackground: The World Health Organization (WHO) recommends incorporating psychosocial stimulation into the
management of severe acute malnutrition (SAM). However, there is little evidence about the effectiveness of these
interventions for SAM children, particularly when serious food shortages and lack of a balanced diet prevail. The
objective of this study was to examine whether family-based psychomotor/psychosocial stimulation in a lowincome setting improves the development, linear growth, and nutritional outcomes in children with SAM.
Method: Children with SAM (N = 339) admitted for treatment to the Jimma University Specialized Hospital, Ethiopia,
were randomized to a control (n = 170) or intervention (n = 169) group. Both groups received routine medical care
and nutritional treatment at the hospital. The intervention group additionally received play-based psychomotor/
psychosocial stimulation during their hospital stay, and at home for 6 months after being discharged from hospital.
The fine motor (FM) and gross motor (GM) functions, language (LA) and personal-social (PS) skills of the children
were assessed using adapted Denver II, the social-emotional (SE) behavior was assessed using adapted Ages and
Stages Questionnaires: Social-Emotional, and the linear growth and nutritional status were determined through
anthropometric assessments. All outcomes were assessed before the intervention, upon discharge from hospital,
and 6 months after discharge (as end-line). The overtime changes of these outcomes measured in both groups
were compared using Generalized Estimating Equations.
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© The Author(s). 2019 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0
International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and
reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to
the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver
(http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
* Correspondence: [email protected] †
Teklu Gemechu Abessa and Marita Granitzer contributed equally to this
work.
1
Department of Special Needs and Inclusive Education, College of Behavioral
Sciences and Education, Jimma University, Jimma, Ethiopia
2
REVAL Rehabilitation Research Center, Biomedical Research Institute, Faculty
of Rehabilitation Sciences and Physiotherapy, Hasselt University, Hasselt,
Belgium
Full list of author information is available at the end of the article
Abessa et al. BMC Pediatrics (2019) 19:336
https://doi.org/10.1186/s12887-019-1696-z
(Continued from previous page)
Results: The intervention group improved significantly on GM during hospital follow-up by 0.88 points (p < 0.001,
effect size = 0.26 SD), and on FM functions during the home follow-up by 1.09 points (p = 0.001, effect size = 0.22
SD). Both young and older children benefited similarly from the treatment. The intervention did not contribute
significantly to linear growth and nutritional outcomes.
Conclusion: Psychomotor/psychosocial stimulation of SAM children enhances improvement in gross motor
functions when combined with standard nutrient-rich diets, but it can enhance the fine motor functions even
when such standard dietary care is not available.
Trial registration: The trial was retrospectively registered on 30 January 2017 at the US National Institute of Health
(ClinicalTrials.gov) # NCT03036176.This study is part of the Jimma University-Interuniversity Collaboration partnership program funded by Vlaamse Interuniversitaire Raad - Universitaire Ontwikkelingssamenwerking (VLIR-UOS). The funder had no role in study design, data collection and analysis, decision to prepare or publish the manuscript
Językowy portret złodzieja w „Worku Judaszow” Sebastiana Fabiana Klonowica
No full textThe author presents a picture of a thief in Worek Judaszow by S.F. Klonowic.
Analysing a linguistic creation of the appearance, character and behaviour of
the characters, she underlines that the descriptive language interprets the reality
to shape the reader’s behaviour towards it. The author indicates that the
convention of ugliness served Klonowic to create the character being a personal
antimodel
Disordered eating attitude and associated factors among late adolescent girls in Gondar city, northwest Ethiopia: a community-based cross-sectional study
No full textBackgroundDisordered eating attitudes are characterized by abnormal beliefs, thoughts, and feelings regarding food and weight control. Dieting, intentional weight loss, and weight control affect 41–62% of girls worldwide. However, there is limited information related to disordered eating attitudes and associated factors among late adolescent girls in Ethiopia, including in the study area. Thus, the study aimed to assess disordered eating attitudes and associated factors among late adolescent girls in Gondar city, northwest Ethiopia.MethodsFor this community-based cross-sectional study, which was conducted from 26 June to 26 July 2022, in Gondar city, Ethiopia, 1,188 adolescent girls were included. Multistage stratified sampling followed by a systematic random sampling technique was applied to recruit participants for the study. Data were collected using an interviewer-administered questionnaire containing the Eating Attitudes Test-26 (EAT-26). Anthropometric measurements were also taken. Bivariable and multivariable logistic regressions were employed to identify factors associated with disordered eating attitudes. In the final model, variables with a p-value of < 0.05 were considered statistically significant.ResultsA total of 1,158 late adolescent girls (a response rate of 97.5%) participated in the study. The prevalence of disordered eating attitudes among late adolescent girls was 9.7% [95% confidence interval (CI): 7.96, 11.4%]. Having a mother who was unable to read and write [adjusted odds ratio (AOR): 3.88 (95% CI: 1.07, 14.11)], having a mother who could read and write [AOR: 4.31: (95% CI: 1.14, 16.24)], having a father who only attended primary school [AOR: 3.78 (95% CI: 1.33, 10.78)], having severe anxiety [AOR: 3.26 (95% CI: 1.42, 7.49)], and severe usage of social media [AOR: 2.80 (95% CI: 1.22, 6.46)] were factors significantly associated with disordered eating attitudes among late adolescent girls.ConclusionThis study revealed that disordered eating attitudes among late adolescent girls were relatively high. The educational status of parents, anxiety, and severe usage of social media were positively associated with disordered eating attitudes. Therefore, nutritional education for parents of adolescents who are vulnerable to unhealthy behavior is imperative. The finding also implied the importance of an inclusive strategy to mitigate the emerging problem of targeting vulnerable groups
The right to free legal assistance during pretrial stages in Ethiopia: a comparative study
No full textThe right to free legal assistance is considered as a cornerstone to ascertain a fair trial, thus, in its absence it is hard to enforce other rights including rights conferred during pretrial stages. Albeit free legal assistance in pretrial stages is not explicitly recognized in binding international and regional human right instruments, norms and jurisprudences developed at the international floor enjoins state parties including Ethiopia to confer the right. Bearing this in mind, the paper aims to assess the status of the right to free legal assistance in pretrial stages, the institutional setup and approaches employed to render free legal assistance in Ethiopia through a comparative perspective and mainly a doctrinal one. Legal assistance serves as an instrument to create equality of arms among contentious parties. Inequality of arms is apparent in all stages of the criminal proceedings including pretrial stages and justice cannot be assured without ascertaining a legal assistance by states for all eligible persons. Notwithstanding, in this paper, the author finds that the prominent approaches employed to create equality of arms through rendering free legal assistance in Ethiopia have rare experience of providing the right in pretrial stages. The main reasons for this are owing to lack of recognition of the right to free legal assistance for detained/arrested persons inside the FDRE constitution and subsequent legislations as well as lack of institutional setup to fulfill the obligation of Ethiopia which emanate from; the cumulative reading of Article 14/3/b and 14/3/d of ICCPR, the jurisprudence of UNHRC, Article 9/4 and 13 of the FDRE constitution. The right to free legal assistance in pretrial stages is not recognized in Ethiopia and the approaches employed are not comprehensive enough. Therefore, the author through considering; international and regional standards regarding free legal assistance during pretrial stages, the value of the right and experience of comparative jurisdictions, argues for; (i) the incorporation of the right under the FDRE constitution and the enactment of a comprehensive legal framework thereof, (ii) the establishment of autonomous institution to manage the delivery of the service through diversifying providers, and (iii) the employment of a special procedure to render free legal assistance during pretrial stages of the criminal proceedings
A critical analysis of Ethiopian Civil Code: in light of the core features of Continental European Codification
No full textThis dissertation examines the core features of codification and applies them to the Ethiopian civil code in order to critically analyze whether that code complies with the core features of continental European codification or not. The author describes the development of the system of law in Ethiopia - explaining how Ethiopia became one of Africa’s states highly influenced by the model of continental European codification, particularly with the introduction during the regime of Emperor Haile Sellasie (between 1957 and 1965) of a group of highly complex codes – Civil code, Civil Procedure code, Penal code, Criminal Procedure code, Commercial code and Maritime code – giving Ethiopia one of the most modern legal systems in the World
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