About 1% or 1,350 cases (sum of the 2 figures shown in red) of the approximately 150,000 completed investigations received by DISCO each year result in clearance denial or revocation. About 20% to 30% of cases decided by DOHA Administrative Judges are appealed by either the applicant or the DOHA Department Counsel.
While 99% may seem like a very large percentage of clearance approvals, it does not accurately reflect the true percentage of people who are eligible for a security clearance. An unknown number of people choose not to apply for positions that require a clearance, because they believe there are factors in their life that would inevitably result in a clearance denial. Some potential applicants fail to receive sponsorship, because they are screened out of the process by prospective employers. Others drop out of the process, because major derogatory information causes the process to continue for an unacceptable period of time. Many are not hired, because they fail to receive an interim clearance required for the job by the prospective employer due to derogatory information. In 2008 DISCO declined to grant interim clearances to 39% of applicants.
See the table where the progression of completed investigations once they are received at DISCO and work their way through the adjudicative process.