Flawed Requirements Trigger 70% of Project Failures
That's the title of an article in the latest Info-Tech Advisor, a regular newsletter of the Info-Tech Research Group. The article starts off by saying: Up to 50% of project rework is attributable to problems with requirements. Of projects that fail, 70% fail due to poor requirements. Quickly identify requirements risk factors and implement an effective requirements management process to avoid becoming another project failure statistic.
Its a good read for anyone responsible for an organization's IT projects. The Info-Tech Advisor is only available by paid subscription, but a pdf of this article is at the link below, with their permission.
And take a look at their web site - including the chart comparing them with other providers.