Preschool children’s vision screening in New Zealand: A retrospective evaluation of referral accuracy

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aut.relation.articlenumbere009207en_NZ
aut.relation.endpage7
aut.relation.journalBMJ Openen_NZ
aut.relation.startpage1
aut.relation.volume5en_NZ
aut.researcherVandal, Alain
dc.contributor.authorLangeslag-Smith, MAen_NZ
dc.contributor.authorVandal, ACen_NZ
dc.contributor.authorBriane, Ven_NZ
dc.contributor.authorThompson, Ben_NZ
dc.contributor.authorAnstice, NSen_NZ
dc.date.accessioned2018-09-10T04:05:18Z
dc.date.available2018-09-10T04:05:18Z
dc.date.copyright2015en_NZ
dc.date.issued2015en_NZ
dc.description.abstractObjectives: To assess the accuracy of preschool vision screening in a large, ethnically diverse, urban population in South Auckland, New Zealand. Design: Retrospective longitudinal study. Methods: B4 School Check vision screening records (n=5572) were compared with hospital eye department data for children referred from screening due to impaired acuity in one or both eyes who attended a referral appointment (n=556). False positive screens were identified by comparing screening data from the eyes that failed screening with hospital data. Estimation of false negative screening rates relied on data from eyes that passed screening. Data were analysed using logistic regression modelling accounting for the high correlation between results for the two eyes of each child. Primary outcome measure: Positive predictive value of the preschool vision screening programme. Results: Screening produced high numbers of false positive referrals, resulting in poor positive predictive value (PPV=31%, 95% CI 26% to 38%). High estimated negative predictive value (NPV=92%, 95% CI 88% to 95%) suggested most children with a vision disorder were identified at screening. Relaxing the referral criteria for acuity from worse than 6/9 to worse than 6/12 improved PPV without adversely affecting NPV. Conclusions: The B4 School Check generated numerous false positive referrals and consequently had a low PPV. There is scope for reducing costs by altering the visual acuity criterion for referral.en_NZ
dc.identifier.citationBMJ open, 5(11), e009207.
dc.identifier.doi10.1136/bmjopen-2015-009207en_NZ
dc.identifier.issn2044-6055en_NZ
dc.identifier.urihttps://hdl.handle.net/10292/11797
dc.publisherBMJ Journalsen_NZ
dc.relation.urihttp://bmjopen.bmj.com/content/5/11/e009207en_NZ
dc.rightsThis is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
dc.rights.accessrightsOpenAccessen_NZ
dc.titlePreschool children’s vision screening in New Zealand: A retrospective evaluation of referral accuracyen_NZ
dc.typeJournal Article
pubs.elements-id188402
pubs.organisational-data/AUT
pubs.organisational-data/AUT/Health & Environmental Science
pubs.organisational-data/AUT/PBRF
pubs.organisational-data/AUT/PBRF/PBRF Health and Environmental Sciences
pubs.organisational-data/AUT/PBRF/PBRF Health and Environmental Sciences/HY Public Health & Psychosocial Studies 2018 PBRF
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