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@ARTICLE{Schttler:157142,
      author       = {C. Schüttler and V. Huth and M. von Jagwitz-Biegnitz and
                      M. Lablans$^*$ and H.-U. Prokosch and L. Griebel},
      title        = {{U}sability {A}nalysis of the '{S}ample {L}ocator': a
                      {F}ederated {O}nline {S}earch {T}ool for {B}iospecimens.},
      journal      = {Journal of medical internet research},
      volume       = {22},
      number       = {8},
      issn         = {1438-8871},
      address      = {Richmond, Va.},
      publisher    = {Healthcare World},
      reportid     = {DKFZ-2020-01428},
      pages        = {e17739},
      year         = {2020},
      note         = {2020 Aug 18;22(8):e17739},
      abstract     = {The German Biobank Alliance (GBA) aims to establish a
                      cross-site biobank network. For this endeavor, the so-called
                      Sample Locator has been developed ‒ a federated
                      search-tool for biospecimens and related data ‒ forming
                      the heart of its IT infrastructure.To ensure the sustainable
                      use of such a tool, we included researchers as participants
                      in an end user based usability evaluation.To develop a
                      prototype ready for evaluation, we needed input from GBA IT
                      experts. Thus, we conducted a two-day workshop with eight
                      GBA IT team members. Focus was on the respective steps of a
                      user-centered design process. With the acquired knowledge,
                      the participants designed low fidelity mockups. The main
                      ideas of these mockups were discussed, extracted and
                      summarized into a comprehensive prototype using MS
                      PowerPoint. Furthermore, we created a questionnaire
                      concerning the usability of the prototype including the
                      System Usability Score (SUS), questions on negative/
                      positive aspects, and typical tasks to be fulfilled with the
                      tool. Subsequently, the prototype was pre-tested on basis of
                      this questionnaire with researchers having biobank
                      background. Based on this preliminary work, the usability
                      analysis was ultimately carried out with researchers and the
                      results were evaluated.Altogether 27 researchers familiar
                      with sample requests evaluated the prototype. The analysis
                      of the feedback certifies a good usability given the Sample
                      Locator prototype was seen as intuitive and user-friendly,
                      by $74\%$ of the participants. The total SUS score of 25
                      persons that completed the questionnaire is 80.4, indicating
                      good system usability. Still, the evaluation provided useful
                      advice on optimization potential, e.g. by offering a help
                      function.The findings of this usability analysis indicate
                      that the considerations regarding a user-friendly
                      application, which have been made in the development process
                      so far, strongly coincide with the perception of the study
                      participants. Nevertheless, it was important to engage
                      prospective end users to ensure that the previous
                      development is going in the desired direction and that the
                      Sample Locator will be used in the future. The user comments
                      and suggestions for improvement will be considered in
                      upcoming iterations for refinement.},
      cin          = {E260},
      ddc          = {610},
      cid          = {I:(DE-He78)E260-20160331},
      pnm          = {315 - Imaging and radiooncology (POF3-315)},
      pid          = {G:(DE-HGF)POF3-315},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:32663150},
      doi          = {10.2196/17739},
      url          = {https://inrepo02.dkfz.de/record/157142},
}