Abt Associates (Abt) mailed letters to approximately 15,000 beneficiaries over this
3-month period to solicit volunteers for stage 2 of the Benefit Offset National Demonstration
(BOND) project. If a beneficiary volunteered and was randomly assigned to a $1 for
$2 treatment group, the BOND work continuing disability review (CDR) unit coded the
disability control file (DCF), indicating that the beneficiary is a BOND participant.
For a definition of a BOND participant, see DI 60099.015A.