Elizabeth Schieber, Lynette Deveaux, Lesley Cotrell, Xiaoming Li, Stephenie C Lemon, Arlene S Ash, Karen MacDonell, Samiran Ghosh, Maxwell Poitier, Glenda Rolle, Sylvie Naar, Bo Wang
Maintaining Program Fidelity in a Changing World: National Implementation of a School-Based HIV Prevention Program
Prevention science : the official journal of the Society for Prevention Research
purpose study assess predictive ability testpositive findings elementary school vision screening program conducted 2ndyear optometry students identifying children eye vision disorders modified version modified clinical technique mct vision screening administered elementary children belowaverage socioeconomic neighborhood houston texas comprehensive eye vision examinations provided available children failed vision screening screening administered groups 2ndyear optometry students assistance 4thyear optometry student supervised faculty member licensed practice optometry followup examinations provided supervised 4thyear optometry students clinical setting based elementary school positive predictive values calculated screening examination findings estimate probability failure one screening tests would identify children eye vision disorders sixtynine percent testpositive children examined found true positives criteria developed study vision screening methods orinda california 1954 1956 predictive ability studys testpositive findings identifying eye vision disorders found less predictive ability orinda study findings reduced predictive ability present study resulted larger number children overreferred examinations occurred orinda study reduction ability testpositive findings current studys screening program identify accurately children eye vision problems likely due limited experience optometry students conducting screening program inability retrospective study evaluate accuracy testnegatives major limitation assessing total effectiveness vision screening program although present study may indicate value optometry students conducting elementary vision screening programs prospective study could assess predictive ability testpositive testnegative findings well determine sensitivity specificity screening program needed assess fully effectiveness school vision screening programs using professional students