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Ghilagaber, GebrenegusORCID iD iconorcid.org/0000-0002-2910-8432
Publications (10 of 68) Show all publications
Ghilagaber, G. (2025). Bayesian Discrete-Time Sequential Modeling of Regional Differences in Under-5 Mortality in Ethiopia: Evidence From Ethiopia Demographic and Health Survey 2019 Data. In: : . Paper presented at 2025 Annual Meeting of the Population Association of America (PAA), 10-13 April 2025, Washington, DC, USA..
Open this publication in new window or tab >>Bayesian Discrete-Time Sequential Modeling of Regional Differences in Under-5 Mortality in Ethiopia: Evidence From Ethiopia Demographic and Health Survey 2019 Data
2025 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
Probability Theory and Statistics Demography
Research subject
Statistics; Demography
Identifiers
urn:nbn:se:su:diva-240889 (URN)
Conference
2025 Annual Meeting of the Population Association of America (PAA), 10-13 April 2025, Washington, DC, USA.
Available from: 2025-04-15 Created: 2025-04-15 Last updated: 2025-04-16
Ghilagaber, G. (2025). Discrete-Time Bayesian Sequential Modeling of the Relationship Between Premarital Cohabitation and Subsequent Risk of Divorce. In: : . Paper presented at 2025 Annual Meeting of the Population Association of America (PAA), Washington, USA, April 10-13, 2025.
Open this publication in new window or tab >>Discrete-Time Bayesian Sequential Modeling of the Relationship Between Premarital Cohabitation and Subsequent Risk of Divorce
2025 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
Probability Theory and Statistics
Research subject
Statistics; Demography
Identifiers
urn:nbn:se:su:diva-240890 (URN)
Conference
2025 Annual Meeting of the Population Association of America (PAA), Washington, USA, April 10-13, 2025
Available from: 2025-04-15 Created: 2025-04-15 Last updated: 2025-05-16Bibliographically approved
Ghilagaber, G. (2024). Bayesian Ordinal Modeling of Educational Attainment among Five Cohorts of Ethiopian Women: An Example of Unequal Variances and Category-Specific Effects. In: : . Paper presented at 2024 Annual Meeting of the Population Association of America (PAA), 17-20 April 2024, Columbus, Ohio, USA..
Open this publication in new window or tab >>Bayesian Ordinal Modeling of Educational Attainment among Five Cohorts of Ethiopian Women: An Example of Unequal Variances and Category-Specific Effects
2024 (English)Conference paper, Poster (with or without abstract) (Other academic)
National Category
Probability Theory and Statistics
Research subject
Statistics
Identifiers
urn:nbn:se:su:diva-228913 (URN)
Conference
2024 Annual Meeting of the Population Association of America (PAA), 17-20 April 2024, Columbus, Ohio, USA.
Note

Program Number: P05-64.

Available from: 2024-05-03 Created: 2024-05-03 Last updated: 2024-05-06Bibliographically approved
Ghilagaber, G. (2024). Bayesian Ordinal Modeling of Effects of Online Teaching During the COVID-19 Pandemic Lockdown on Students with Disabilities. In: : . Paper presented at 2024 Annual Meeting of the Population Association of America (PAA), 17-20 April 2024, Columbus, Ohio, USA. .
Open this publication in new window or tab >>Bayesian Ordinal Modeling of Effects of Online Teaching During the COVID-19 Pandemic Lockdown on Students with Disabilities
2024 (English)Conference paper, Poster (with or without abstract) (Other academic)
National Category
Probability Theory and Statistics
Research subject
Statistics
Identifiers
urn:nbn:se:su:diva-228912 (URN)
Conference
2024 Annual Meeting of the Population Association of America (PAA), 17-20 April 2024, Columbus, Ohio, USA. 
Available from: 2024-05-03 Created: 2024-05-03 Last updated: 2024-05-06Bibliographically approved
Sallnäs Pysander, E.-L., Mårtensson, F., Waern, A., Litsmark, A., Hedblom, M., Raustorp, A., . . . Zhu, H. (2024). Nature and digitalisation challenging the traditional playground. Urban Forestry & Urban Greening, 93, Article ID 128148.
Open this publication in new window or tab >>Nature and digitalisation challenging the traditional playground
Show others...
2024 (English)In: Urban Forestry & Urban Greening, ISSN 1618-8667, E-ISSN 1610-8167, Vol. 93, article id 128148Article in journal (Refereed) Published
Abstract [en]

Playing outdoors in nature with peers has been attributed most importance for children's healthy development but is increasingly marginalized because of the attractiveness of screen-based play. Careful merging of digital technology into outdoor play environments rich on nature elements could potentially help bridge digital play with more traditional play activities outdoors. A systematic comparison was made of outdoor play in more or less green settings, with and without digital installations or traditional play equipment. The separate and combined role of digital artefacts, play equipment and natural elements, were investigated, with particular focus on the effects of merging digital materials into nature. A group of children aged 6–8 were involved in a field study in a three-week period playing in a traditional playground, a forest and in a forest with digitally enhanced play artefacts. Children´s play behavior was evaluated using a behavioral tracking method, a questionnaire and a contextual interview with the children, and a physical activity measure, in combination with inventories including maps to document the design, and the ecological and physical status of the settings. The study documents differences in children's play behavior across the three settings. It differs most between the digital forest setting and the forest setting regarding the play categories imaginative play, physical play and rule play and the digital forest setting stands out when it comes to expressive play. It is discussed how particular attributes in the physical environment influence the overall play flow and the interactive effects of natural material and digital material. Ecologically, the forest and the forest with digitally enhanced artefacts were more diverse than the traditional playground, but the natural material present was important for play in all settings.

Keywords
Children’s play, Health promotion, Outdoor education, Urban planning, Playground, Digital
National Category
Human Computer Interaction
Identifiers
urn:nbn:se:su:diva-199772 (URN)10.1016/j.ufug.2023.128148 (DOI)001168058900001 ()2-s2.0-85184976581 (Scopus ID)
Available from: 2023-11-09 Created: 2023-11-09 Last updated: 2024-03-14Bibliographically approved
Öhrstedt, M., Käck, A., Reierstam, H. & Ghilagaber, G. (2024). Studying online with special needs: a student perspective. Journal of Research in Special Educational Needs, 24(3), 771-785
Open this publication in new window or tab >>Studying online with special needs: a student perspective
2024 (English)In: Journal of Research in Special Educational Needs, E-ISSN 1471-3802, Vol. 24, no 3, p. 771-785Article in journal (Refereed) Published
Abstract [en]

As diversity is increasing in higher education, the number of students withdisabilities (SWD) grows. In parallel, technological development and onlineeducation change the conditions for teaching and learning. Previous researchindicates that the digitalisation provides both challenges and opportunities forequal participation. This study explores the experiences of SWD in online highereducation, using the Communities of Inquiry model as a theoretical framework.A questionnaire with 6256 students (430 SWD) examines the differences andsimilarities between SWD and other students in online courses. The results showthat SWD are a heterogeneous group with diverse needs and preferences, and thatonline education can offer both advantages and disadvantages for them. The mainadvantages are using technology to compensate for disabilities, enabling moreequal participation, and the flexibility and convenience of online courses. The mainchallenges are difficulties in planning and self-regulation, decreased motivationand increased stress, perceived uncertainties about examination requirementsand proceedings and the unfulfilled need for interactive environments andfeedback. The importance of faculty–student relationships is highlighted, and thesignificance of clarity and accessibility, feedback and interaction and flexibilityand variation in creating inclusive online courses is emphasised. Implications forpolicy and practice are suggested.

Place, publisher, year, edition, pages
United Kingdom: Wiley-Blackwell Publishing Inc., 2024
Keywords
higher education, inclusion, online learning, special needs, student experiences
National Category
Educational Sciences
Identifiers
urn:nbn:se:su:diva-215575 (URN)10.1111/1471-3802.12670 (DOI)001201290500001 ()2-s2.0-85190554378 (Scopus ID)
Available from: 2024-03-30 Created: 2024-03-30 Last updated: 2025-02-18Bibliographically approved
Ghilagaber, G. & Larsson, R. (2023). Adjustment of Anticipatory Covariates in Retrospective Surveys: An Expected Likelihood Approach. Stats, 6(4), 1179-1197
Open this publication in new window or tab >>Adjustment of Anticipatory Covariates in Retrospective Surveys: An Expected Likelihood Approach
2023 (English)In: Stats, ISSN 2571-905X, Vol. 6, no 4, p. 1179-1197Article in journal (Refereed) Published
Abstract [en]

We address an inference issue where the value of a covariate is measured at the date of the survey but is used to explain behavior that has occurred long before the survey. This causes bias because the value of the covariate does not follow the temporal order of events. We propose an expected likelihood approach to adjust for such bias and illustrate it with data on the effects of educational level achieved by the time of marriage on risks of divorce. For individuals with anticipatory educational level (whose reported educational level was completed after marriage), conditional probabilities of having attained the reported level before marriage are computed. These are then used as weights in the expected likelihood to obtain adjusted estimates of relative risks. For our illustrative data set, the adjusted estimates of relative risks of divorce did not differ significantly from those obtained from anticipatory analysis that ignores the temporal order of events. Our results are slightly different from those in two other studies that analyzed the same data set in a Bayesian framework, though the studies are not fully comparable to each other.

Keywords
anticipatory analysis, event-history analysis, expected likelihood analysis, maximum likelihood, retrospective surveys
National Category
Probability Theory and Statistics
Research subject
Statistics
Identifiers
urn:nbn:se:su:diva-223550 (URN)10.3390/stats6040074 (DOI)001131223200001 ()2-s2.0-85180180251 (Scopus ID)
Available from: 2023-11-01 Created: 2023-11-01 Last updated: 2024-01-16Bibliographically approved
Ghilagaber, G. (2023). Bayesian Change Point Analysis of Levels and Trends in Total Fertility Rates in Africa, 1960–2020. In: Population Association of America (Ed.), : . Paper presented at 2023 Annual Meeting of the Population Association of America (PAA), New Orleans (Louisiana, USA), 12-15 April 2023..
Open this publication in new window or tab >>Bayesian Change Point Analysis of Levels and Trends in Total Fertility Rates in Africa, 1960–2020
2023 (English)In: / [ed] Population Association of America, 2023Conference paper, Oral presentation with published abstract (Refereed)
National Category
Probability Theory and Statistics
Research subject
Statistics; Demography
Identifiers
urn:nbn:se:su:diva-215648 (URN)
Conference
2023 Annual Meeting of the Population Association of America (PAA), New Orleans (Louisiana, USA), 12-15 April 2023.
Available from: 2023-03-22 Created: 2023-03-22 Last updated: 2023-03-23Bibliographically approved
Ghilagaber, G. & Fenialdi, E. (2023). Bayesian Piecewise Exponential Modeling of Environmental Recidivism in Sweden. In: Population Association of America (Ed.), : . Paper presented at 2023 Annual Meeting of the Population Association of America (PAA), New Orleans (Louisiana, USA), 12-15 April 2023..
Open this publication in new window or tab >>Bayesian Piecewise Exponential Modeling of Environmental Recidivism in Sweden
2023 (English)In: / [ed] Population Association of America, 2023Conference paper, Poster (with or without abstract) (Other academic)
National Category
Probability Theory and Statistics
Research subject
Statistics; Demography
Identifiers
urn:nbn:se:su:diva-215649 (URN)
Conference
2023 Annual Meeting of the Population Association of America (PAA), New Orleans (Louisiana, USA), 12-15 April 2023.
Available from: 2023-03-22 Created: 2023-03-22 Last updated: 2023-03-23Bibliographically approved
Holle, H., Ghilagaber, G. & Drees, R. (2023). Evaluation of the normal gastrointestinal tract in cats using dual-phase computed tomography. Journal of Small Animal Practice, 64(7), 463-476
Open this publication in new window or tab >>Evaluation of the normal gastrointestinal tract in cats using dual-phase computed tomography
2023 (English)In: Journal of Small Animal Practice, ISSN 0022-4510, E-ISSN 1748-5827, Vol. 64, no 7, p. 463-476Article in journal (Refereed) Published
Abstract [en]

Objectives: In cats, although ultrasonography remains the preferred modality to evaluate the gastrointestinal tract, computed tomographic (CT) examination of the abdomen is commonly performed. However, a normal description of the gastrointestinal tract is lacking. This study describes the conspicuity and contrast enhancement pattern of the normal gastrointestinal tract in cats using dual-phase CT.

Materials and Methods: Pre- and dual-phase postcontrast (early scan at 30 seconds and late scan mean at 84 seconds) abdominal CT exams of 39 cats without history, clinical signs or diagnosis of gastrointestinal disease were reviewed. The gastrointestinal tract was examined for conspicuity and enhancement pattern using commercially available viewing software (Osirix, v.6.5.2), and diameters of 16 gastrointestinal segments were recorded and compared with published radiographic and ultrasonographic reference values.

Results: Of the 624 gastrointestinal segments, 530 (84.9%) were identified on precontrast studies and 545 (87.3%) segments on postcontrast studies. Of the gastrointestinal wall segments, 257 (41.2%) were identified on precontrast studies and 314 (50.3%) on postcontrast studies. Gastrointestinal segment diameters correlated well with published normal values, whereas wall thickness measurements usually were smaller compared with sonographic normal values. Early mucosal surface enhancement was frequently seen in the gastric cardia and fundus and ileocolic junction, and a mainly transmural wall enhancement in other gastrointestinal segments.

Clinical Significance: Dual-phase CT allows for the identification of gastrointestinal tract segments and walls in cats. Contrast enhancement improves conspicuity and demonstrates wall layering in the cardia, fundus and ileocolic junction.

National Category
Veterinary Science
Research subject
Diagnostic Radiology
Identifiers
urn:nbn:se:su:diva-199770 (URN)10.1111/jsap.13605 (DOI)000960646600001 ()36990464 (PubMedID)2-s2.0-85151998236 (Scopus ID)
Available from: 2023-01-24 Created: 2023-01-24 Last updated: 2023-08-16Bibliographically approved
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Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-2910-8432

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