Evaluation of the Steelex M600H coagulometer prothrombin time-international normalized ratio assay with Steelex test reagents

Introduction

The aim of the present study was to validate prothrombin time (PT) international normalized ratio (INR) results obtained using Steelex test reagents and a Steelex coagulometer (Steelex Scientific Instrument Company, Beijing, China), in comparison with use of a well-established standard test employing Pacific Hemostasis reagents (Fisher Diagnostics, Middletown, VA, USA) and Teco Coatron A4 coagulometer (Teco Medical Instruments GmbH, Neufahrn, Germany).

Materials and methods:

Between- and within-day coefficients of variation (CVs) of both assays were calculated using control samples provided by the test manufacturers. Samples from 90 subjects were collected and INR values were determined in a double-blind parallel manner employing both systems.

Results:

The within-day coefficients of variation (CVs) in INR estimates ranged from 2.6% (INR = 1.12) to 3.1% (INR = 2.51) for the Steelex system and from 2.1% (INR = 1.09) to 1.8% (INR = 2.8) for the Pacific test; the between-day values ran from 3.4% (INR = 1.16) to 7.9% (INR = 2.64) and from 3.3% (INR = 1.1) to 2.3% (INR = 2.7), respectively. Passing-Bablok fit of the of the Steelex and Pacific methods yielded the equation: Steelex INR = 0.85 (0.79–0.91) × Pacific INR + 0.12 (−0.02–0.21), whereas the CUSUM linearity P value was < 0.01. The mean bias as determined by the Bland-Altman test was −0.156 (−0.912–0.600).

Conclusion:

The results obtained using Steelex reagents and the M600H coagulometer are not equivalent to those obtained using Pacific Hemostasis reagents and a Teco Coatron A4 coagulometer, at least in the therapeutic range.     

Orally Positioning Older People in Assessment Meetings

It has been demonstrated that persons with dementia may be positioned as less competent than participants of the same age without dementia, and that persons with dementia possibly also are positioned as less competent than other older persons without dementia. In the present study, we aim to explore this further by analyzing Swedish assessment meetings in which needs and preferences are investigated for older persons without dementia. The material consists five audio-recorded assessment meetings, where there were at least two conversational partners present (a spouse and/or a child) and where the older person applying for social services was not diagnosed with dementia. The ages of the older persons ranged from 81 to 88, while the age of the relatives ranged from 46 to 93. The results of the present study demonstrate that older persons without dementia mainly are positioned as competent. However, it may be related to the degree of frailty, because the frailest person in the present study appears to be positioned as less competent than the other participants. The present paper adds to existing knowledge on how professionals in assessment meetings contribute to the positioning of older persons as competent and capable of making decisions. The results of the present article may be useful to promote development of education and training of communication skills for care mangers in assessments. Such training would further ensure that older persons with and without cognitive impairments can be actively involved in the creation and interpretation of their applications for social services.     

Embodiment and the Risk of Reading

In this article, Anders Öhman discusses Gert J. J. Biesta's concept of the risk of education and what it could mean for the study of literature in the classroom. The article's point of departure is Bakhtin's theory of the utterance. The utterance, for Bakhtin, has to be embodied, that is, it has to be governed by a purpose: it must be uttered by someone, or at least the reader or listener must imagine that it is uttered by someone that speaks with an intent. A grammatical sentence that is not an utterance has no author and no direction or intention; it is therefore abstract and belongs to no one. Reading on the Internet, or digital reading, often consists of short passages or text fragments for which it is difficult to identify an author. These fragments are not embodied and thus the reader does not feel addressed by the text. Although Biesta does not reckon with Bakhtin's theory, his critique of “strong education” provides an analysis that runs along similar lines. According to Biesta, the notion of strong education and what he calls the “language of learning” regard knowledge as free of values thus rendering it abstract. In bringing together Bakhtin's and Biesta's analyses, Öhman concludes that in order for knowledge to elicit valuation, it must first become embodied; this process, in turn, is important to creating the conditions necessary for a dialogue to occur between the content of teaching and the students.     

Facilitating place-based environmental education through bird studies: an action research investigation

This study involved a workshop designed to support biology teachers in conducting birdwatching activities with their students and to promote place-based environmental education in Turkey. The instruments for collecting data were a workshop questionnaire and interviews. The findings revealed that initial response to the workshop was positive; participating teachers reported that the resources and strategies motivated them to conduct bird studies with students. They identified barriers and noted that the place-based education approach might help overcome many of these barriers. After the workshop, it became clear that participants’ initial intentions to integrate birdwatching into their lessons were challenged by lack of confidence and time. To gain deeper insights into the outcomes of the project, the project coordinator used action research strategies to reflect on her practice and reveal implications for her continued efforts to promote bird and environmental education. She kept a journal, used reiterative reflection, and content analysis to analyse workshop evaluations and interviews. The coordinator recognized potentials and challenges for facilitating birdwatching and environmental education as part of her teaching career. This study shares some of her efforts to provide ongoing support and emphasizes that facilitation of environmental education needs time, commitment, and passion.     

Teacher‐Student Verbal Interaction and Questioning,Class Size and Bilingual Students' Academic Performance

This article is a result of a small-scale study with the purpose of investigating teacher-student verbal interactions and questioning and students' curriculum-related performance in small and large mainstream classes. In mainstream classes the bilingual students were taught together with their monolingual Norwegian peers. The study shows that there are inter-group and intra-group differences with respect to: (i) teacher-student verbal interaction; (ii) academic questioning; (iii) curriculum-related performance of students in small classes compared with large classes. The bilingual minority students in general, and bilingual minority girls in particular, benefit from civics lessons in small classes more than they do in large classes. It is suggested that by creating rich possibilities for teacher-student verbal interaction and curriculum-oriented academic questioning, small classes can provide conditions for better academic performance in content area subjects, i.e. civics, for bilingual students in general and bilingual girls in particular than do large classes.     

Childhood social status in society and school: implications for the transition to higher levels of education

While research into educational inequalities emphasises childhood socio‐economic status, this study adds another dimension of status into the analysis; namely, the child’s own social position among its peers. The aim was to examine whether socio‐economic status and peer status can both be linked to educational transitions and, if so, whether they constitute overlapping paths. In a second step of analyses, the relationship between peer status and adult unemployment was investigated. Data were derived from a longitudinal study using a 1953 cohort born in Stockholm, Sweden. Our results suggest that children with higher socio‐economic status and children with higher peer status are consistently more likely than their lower status peers to proceed to the next level of education, and that the effects of socio‐economic status and peer status hardly overlapped at all. Furthermore, educational differences by peer status seem to involve consequences for the studied subjects’ contemporary labour market opportunities.     

Heterotopias in physical education: towards a queer pedagogy?

This article sets out to outline how prevailing gender structures can be challenged in physical education (PE) by exploring queer potentials in an event that took place during a dancing lesson in an upper secondary PE class. The event and its features were documented through video recording and post-lesson interviews with the teacher and some of the students. It is argued that the event can be seen as a heterotopia, according to Michel Foucault a ‘counter-site’ enabling the resistance to authority, where the production of normalcy was challenged. Furthermore, even though the event happened spontaneously, the authors suggest that it can show a way towards a queer pedagogy for PE through teaching paradoxically; it indicates a preferred ethos of the lesson and the use of conceptual tools by teachers and students that make them able to intervene in the production of normalcy.     

Psychometric properties of the motor diagnostics in the German football talent identification and development programme

The utilisation of motor performance tests for talent identification in youth sports is discussed intensively in talent research. This article examines the reliability, differential stability and validity of the motor diagnostics conducted nationwide by the German football talent identification and development programme and provides reference values for a standardised interpretation of the diagnostics results. Highly selected players (the top 4% of their age groups, U12–U15) took part in the diagnostics at 17 measurement points between spring 2004 and spring 2012 (N = 68,158). The heterogeneous test battery measured speed abilities and football-specific technical skills (sprint, agility, dribbling, ball control, shooting, juggling). For all measurement points, the overall score and the speed tests showed high internal consistency, high test–retest reliability and satisfying differential stability. The diagnostics demonstrated satisfying factorial-related validity with plausible and stable loadings on the two empirical factors “speed” and “technical skills”. The score, and the technical skills dribbling and juggling, differentiated the most among players of different performance levels and thus showed the highest criterion-related validity. Satisfactory psychometric properties for the diagnostics are an important prerequisite for a scientifically sound rating of players’ actual motor performance and for the future examination of the prognostic validity for success in adulthood.