Why are high sensitivity and specificity important?
Sensitivity is the ability of a test to identify a high proportion of children who have a vision problem. If a test is not highly sensitive, it will overlook children with vision problems. This is particularly detrimental to young children for whom early intervention is essential. Specificity is the ability to identify as normal a high proportion of children who do not have a vision problem. If a test lacks specificity, it will incorrectly “fail” children who have normal vision. This can result in undue parental anxiety, time away from work or school, needless paperwork, avoidable medical costs, and unnecessary strain on the healthcare system.
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