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usp 144 11.03.11

usp 144 11.03.11 - recommends or doesn't if not enough info...

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positive predictive value proportion of people with positive test who have condition negative predictive value proportion of people with negative test who do not have condition problem of false negative - person with disease told disease free problem of false positive - person without disease will be referred for diagnosis - cost - time - worry need for reference standard gold standard to determine sensitivity and specificity prevalence of disease task force evaluates quality
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Unformatted text preview: recommends or doesn't if not enough info, also do not recommended screening for vision problems in young children to prevent vision loss -critical window is first 6-8 years amblyopia (vision loss/blindness) 1/3 under 6 receive vision care lead time issue does early detection make a difference in the outcome? issue in current approaches lack of cooperation, inability to read: primary car exams, school eye charts, vision in preschoolers study methods...
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  • Fall '12
  • LEWIS
  • Type I and type II errors, Positive predictive value, Negative predictive value, predictive value proportion, disease free problem

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