Table 4

Posting of study results on Clinicaltrials.gov website indexed against number of completed trials, by year and source of study funding

YearSource of funding
IndustryNon-industryBlendedTotal
2007*
 No. posted7311488
 No. completed in interval26023474568
 % posted/completed28.14.75.415.5
2008
 No. posted4348153568
 No. completed in interval12869083202514
 % posted/completed33.78.916.622.6
2009
 No. posted3398657482
 No. completed in interval125212254062883
 % posted/completed27.17.014.016.7
2010†
 No. posted953121147
 No. completed in interval5626962041462
 % posted/completed16.94.510.310.1
Total
 No. posted9412091351285
 No. completed in interval3360306310047427
 % posted/completed28.06.813.417.3
  • *Interval limited to postings from 28 September 2007.

  • †Interval limited to postings through 23 June 2010.

  • ‡Industry and non-industry funding.

  • Analysis data set limited to US-based, intervention studies at Phase II or beyond.