ɐ stˈʌdi ʌv fˈaɪv hˈaɪ ˈɪmpækt fˈæktɚ dʒˈɜːnəlz fˈaʊndɚz ʌv ˈaɪkmdʒ ʃˈoʊd ðæt ˈoʊnli ˈeɪɾi nˈaɪn pɚsˈɛnt ʌv pˈʌblɪʃt ˈɑːɹɾɪkəlz ˈɑːɹɾɪkəlz pˈʌblɪʃt dˈʊɹɹɪŋ tˈuː θˈaʊzənd tˈɛn tˈuː θˈaʊzənd ɪlˈɛvən; ɐbˌaʊt tɹˈaɪəlz ðæt kəmplˈiːɾᵻd ɪn tˈuː θˈaʊzənd ˈeɪt wɜː pɹˈɑːpɚli ɹˈɛdʒɪstɚd pɹˈaɪɚɹ ɛnɹˈoʊlɪŋ ðə fˈɜːst pɑːɹtˈɪsɪpənt.
A study of five high impact factor journals (founders of ICMJE) showed that only 89% of published articles (articles published during 2010–2011; about trials that completed in 2008) were properly registered prior enrolling the first participant.