Table 1

Major criteria for assessing a screening programme43

• Does the screening programme do more good than harm and at acceptable cost?
• Is the impairment sufficiently common to justify screening all children?
• Does the impairment cause significant disability or handicap?
• Is there agreement about what is meant as a case?
• Is there a screening test that accurately identifies children who may have an impairment?
• Is there an agreed and available effective intervention with which to treat the impairment or reduce the disability after identification?
• Is there an advantage in detecting and/or treating the impairment earlier, before it becomes clinically observable?
• Is the cost of screening justified by the net benefit?