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We review and discuss in this paper the evaluative purpose of the IPSG MRI scale in relation to its development and validation processes so far. We also critically appraise the validity, reliability and responsiveness of using the IPSG MRI scale in different clinical and research settings, and whenever applicable, compare these clinimetric properties of the IPSG MRI scale with those of its precursors, the compatible additive and progressive MRI scales.<\/jats:p>","DOI":"10.1111\/hae.14032","type":"journal-article","created":{"date-parts":[[2020,6,4]],"date-time":"2020-06-04T16:40:18Z","timestamp":1591288818000},"page":"565-574","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Critical appraisal of the International Prophylaxis Study Group magnetic resonance image scale for evaluating haemophilic arthropathy"],"prefix":"10.1111","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4111-0156","authenticated-orcid":false,"given":"Mirkamal","family":"Tolend","sequence":"first","affiliation":[{"name":"Institute of Medical Science University of Toronto Toronto Canada"},{"name":"Department of Diagnostic Imaging The Hospital for Sick Children, University of Toronto Toronto Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8695-6457","authenticated-orcid":false,"given":"Haris","family":"Majeed","sequence":"additional","affiliation":[{"name":"Institute of Medical Science University of Toronto Toronto Canada"},{"name":"Department of Diagnostic Imaging The Hospital for Sick Children, University of Toronto Toronto Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5261-7876","authenticated-orcid":false,"given":"Magdy","family":"Soliman","sequence":"additional","affiliation":[{"name":"Department of Diagnostic Imaging The Hospital for Sick Children, University of Toronto Toronto Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paulo","family":"Daruge","sequence":"additional","affiliation":[{"name":"Institute of Radiology Universidade de Sao Paulo (USP) Sao Paulo SP Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4747-5081","authenticated-orcid":false,"given":"Marcelo","family":"Bordalo\u2010Rodrigues","sequence":"additional","affiliation":[{"name":"Institute of Radiology Universidade de Sao Paulo (USP) Sao Paulo SP Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3694-9539","authenticated-orcid":false,"given":"Sergio San Juan","family":"Dertkigil","sequence":"additional","affiliation":[{"name":"Department of Radiology Universidade de Campinas (UNICAMP) Sao Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8099-6765","authenticated-orcid":false,"given":"Sridhar","family":"Gibikote","sequence":"additional","affiliation":[{"name":"Department of Radiology Christian Medical College Vellore India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4290-496X","authenticated-orcid":false,"given":"Shyamkumar N.","family":"Keshava","sequence":"additional","affiliation":[{"name":"Department of Radiology Christian Medical College Vellore India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3091-532X","authenticated-orcid":false,"given":"Jennifer","family":"Stimec","sequence":"additional","affiliation":[{"name":"Department of Diagnostic Imaging The Hospital for Sick Children, University of Toronto Toronto Canada"},{"name":"Department of Medical Imaging University of Toronto Toronto Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9645-6365","authenticated-orcid":false,"given":"Amy","family":"Dunn","sequence":"additional","affiliation":[{"name":"Department of Hematology Nationwide Children\u2019s Hospital Columbus OH"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ying\u2010Jia","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Radiology Nanfang Hospital Hospital Guangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Victor","family":"Blanchette","sequence":"additional","affiliation":[{"name":"Department of Hematology &amp; 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