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Träfflista för sökning "(WFRF:(Karlberg H)) srt2:(2015-2019)"

Sökning: (WFRF:(Karlberg H)) > (2015-2019)

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  • Dahl, F, et al. (författare)
  • Imaging single DNA molecules for high precision NIPT
  • 2018
  • Ingår i: Scientific reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 8:1, s. 4549-
  • Tidskriftsartikel (refereegranskat)abstract
    • Cell-free DNA analysis is becoming adopted for first line aneuploidy screening, however for most healthcare programs, cost and workflow complexity is limiting adoption of the test. We report a novel cost effective method, the Vanadis NIPT assay, designed for high precision digitally-enabled measurement of chromosomal aneuploidies in maternal plasma. Reducing NIPT assay complexity is achieved by using novel molecular probe technology that specifically label target chromosomes combined with a new readout format using a nanofilter to enrich single molecules for imaging and counting without DNA amplification, microarrays or sequencing. The primary objective of this study was to assess the Vanadis NIPT assay with respect to analytical precision and clinical feasibility. Analysis of reference DNA samples indicate that samples which are challenging to analyze with low fetal-fraction can be readily detected with a limit of detection determined at <2% fetal-fraction. In total of 286 clinical samples were analysed and 30 out of 30 pregnancies affected by trisomy 21 were classified correctly. This method has the potential to make cost effective NIPT more widely available with more women benefiting from superior detection and false positive rates.
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  • Hultin, H., et al. (författare)
  • Psychometric Properties of an Instrument to Measure Social and Pedagogical School Climate Among Teachers (PESOC)
  • 2018
  • Ingår i: Scandinavian Journal of Educational Research. - : Informa UK Limited. - 0031-3831 .- 1470-1170. ; 62:2, s. 287-306
  • Tidskriftsartikel (refereegranskat)abstract
    • This study investigated the psychometric properties of a teacher-reported version of a Swedish school climate instrument called the Pedagogical and Social Climate (PESOC), which consists of 95 items covering cultural, structural and social factors. A sample of 348 teachers from 19 Swedish secondary schools was used. Multilevel confirmatory factor analysis conducted within a structural equation modelling framework indicated that the PESOC had a two-factor structure at the teacher level and a one-factor at the school level. The PESOC’s convergent validity was supported by the school-level correlations between PESOC and another established instrument (i.e., the Team Climate Inventory). Further validation studies of PESOC are needed with larger, more representative samples, and with information on important outcomes such as student achievement and wellbeing.
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