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001-es BibID:	BIBFORM112718
035-os BibID:	(WOS)000426432400021 (Scopus)85041390859
Első szerző:	Harris, C.
Cím:	Optimising the measurement of bruises in children across conventional and cross polarized images using segmentation analysis techniques in Image J, Photoshop and circle diameter measurements / C. Harris, A. Alcock, L. Trefan, D. Nuttall, S. T. Evans, S. Maguire, A. M. Kemp
Dátum:	2018
ISSN:	1752-928X 1532-2009
Megjegyzések:	Background: Bruising is a common abusive injury in children, and it is standard practice to image and measure them, yet there is no current standard for measuring bruise size consistently. We aim to identify the optimal method of measuring photographic images of bruises, including computerised measurement techniques. Methods: 24 children aged<11 years (mean age of 6.9, range 2.5?10 years) with a bruise were recruited from the community. Demographics and bruise details were recorded. Each bruise was measured in vivo using a paper measuring tape. Standardised conventional and cross polarized digital images were obtained. The diameter of bruise images were measured by three computer aided measurement techniques: Image J (segmentation with Simple Interactive Object Extraction (maximum Feret diameter), ♭Circular Selection Tool' (Circle diameter), & the Photoshop ♭ruler' software (Photoshop diameter)). Inter and intra-observer effects were determined by two individuals repeating 11 electronic measurements, and relevant Intraclass Correlation Coefficient's (ICC's) were used to establish reliability. Spearman's rank correlation was used to compare in vivo with computerised measurements; a comparison of measurement techniques across imaging modalities was conducted using Kolmogorov-Smirnov tests. Significance was set at p < 0.05 for all tests. Results: Images were available for 38 bruises in vivo, with 48 bruises visible on cross polarized imaging and 46 on conventional imaging (some bruises interpreted as being single in vivo appeared to be multiple in digital images). Correlation coefficients were>0.5 for all techniques, with maximum Feret diameter and maximum Photoshop diameter on conventional images having the strongest correlation with in vivo measurements. There were significant differences between in vivo and computer-aided measurements, but none between different computer-aided measurement techniques. Overall, computer aided measurements appeared larger than in vivo. Inter- and intra-observer agreement was high for all maximum diameter measurements (ICC's > 0.7). Conclusions: Whilst there are minimal differences between measurements of images obtained, the most consistent results were obtained when conventional images, segmented by Image J Software, were measured with a Feret diameter. This is therefore proposed as a standard for future research, and forensic practice, with the proviso that all computer aided measurements appear larger than in vivo.
Tárgyszavak:	Orvostudományok Egészségtudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk forensic
Megjelenés:	Journal of Forensic and Legal Medicine. - 54 (2018), p. 114-120. -
További szerzők:	Alcock, Amy Trefán László (1969-) (biostatisztikus, bioinformatikus) Nuttall, D. Evans, S. T. Maguire, Sabine Kemp, Alison M.
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM112199
035-os BibID:	(Scopus)85066619998 (cikkazonosító)e0217598 (WOS)000470086200024
Első szerző:	Trefán László (biostatisztikus, bioinformatikus)
Cím:	Epidemiology of alcohol-related emergency hospital admissions in children and adolescents : an e-cohort analysis in Wales in 2006-2011 / Laszlo Trefan, Andrea Gartner, Amy Alcock, Daniel Farewell, Jennifer Morgan, David Fone, Shantini Paranjothy
Dátum:	2019
ISSN:	1932-6203
Megjegyzések:	Objective Harmful levels of alcohol consumption in young people are prevalent and of increasing public concern in the western world. Rates of alcohol-related emergency hospital admissions in children and young people between 10 to 17 years were described, and the reasons for these admissions and their association with socio-demographic factors were examined. Methods E-cohort data were extracted from the Secure Anonymised Information Linkage Databank, which contained alcohol-related emergency hospital admissions (N = 2968) from 2006 to 2011 in children and adolescents aged 10 to 17 years in Wales. A generalised linear mixed model was fitted using a log-link with a population offset to the data to calculate incident rate ratios (IRRSs). Results There was a general decreasing trend from 2006 to 2011 in the number and rate of alcoholrelated emergency hospital admissions; the mean age of admission was 15.4 (standard deviation 1.4) years. In each of the four youngest age groups (10?13,14,15,16 years), females had higher IRRs than males. Males had slightly higher IRR compared to females only in the oldest age group (17 years). IRRs increased with increasing deprivation. The majority (92%) of the admissions lasted one day and most of the admissions (70%) occured during the last three days of the week with a peak on Saturday. The length of stay in hospital was longer in cases when self-harm were present. Multiple admissions showed high prevalance of serio us self-harm cases in females. The number of admissions with injuries and falls were higher for males than females. Conclusion Female children and adolescents were more likely to be admitted to hospital for alcoholrelated reasons. These data illustrate the significant burden of alcohol-related harm in young people and highlight the need for interventions and policies that promote safe drinking practices among young people to prevent future alcohol-related harm during the life-course.
Tárgyszavak:	Orvostudományok Egészségtudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Plos One. - 14 : 6 (2019), p. 1-17. -
További szerzők:	Gartner, Andrea Alcock, Amy Farewell, Daniel Morgan, Jennifer Fone, David Paranjothy, Shantini
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon: