AIHW policy is that Data Quality Statements (DQSs) should be produced at collection level, for those collections for which AIHW acts as data custodian. The DQS for a collection would be included in all releases which draw on that collection. Each DQS should be period specific and should be updated each reference period. Each DQS should also be placed on METeOR, noting that the statement relates to the data itself, not to the data specifications.