Repository of Research and Investigative Information

Repository of Research and Investigative Information

Baqiyatallah University of Medical Sciences

The Sensitivity, Specificity and Predictive Values of Snellen Chart Compared to the Diagnostic Test in Amblyopia Screening Program in Iran

(2015) The Sensitivity, Specificity and Predictive Values of Snellen Chart Compared to the Diagnostic Test in Amblyopia Screening Program in Iran. International Journal of Pediatrics-Mashhad. pp. 1125-1133. ISSN 2345-5047

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Abstract

Introduction Amblyopia is a leading cause of visual impairment in both childhood and adult populations. Our aim in this study was to assess the epidemiological characteristics of the amblyopia screening program in Iran. Materials and Methods A cross-sectional study was done on a randomly selected sample of 4,636 Iranian children who were referred to screening program in 2013 were participated in validity study, too. From each provinces the major city were selected. Screening and diagnostic tests were done by instructors in first stage and optometrists in second stage, respectively. Finally data were analyzed by Stata version 13. Results The sensitivity was ranged from 74 to 100 among the various provinces such that Fars and Ardabil province had maximum and minimum values, respectively. The pattern of specificity was differ and ranged 44 to 84 among the provinces; Hormozgan and Fars had maximum and minimum values, respectively. The positive predictive value was also ranged from 35 to 81 which was assigned to Khuzestan and Ardabil provinces, respectively. The range of Negative Predictive value was 61 to 100 which was belonged to Ardabil and Fars provinces. Conclusion The total sensitivity (89) and negative predictive values (93) of screening test among children aged 3-6 years is acceptable, but only 51 of children refereed to second stage are true positive and this imposes considerable cost to health system.

Item Type: Article
Keywords: Amblyopia Child Iran Sensitivity and Specificity Screening population-based sample pediatric-eye-disease australian children preschool-children visual impairment african-american risk-factors prevalence acuity vision Pediatrics
Divisions:
Page Range: pp. 1125-1133
Journal or Publication Title: International Journal of Pediatrics-Mashhad
Journal Index: ISI
Volume: 3
Number: 6
ISSN: 2345-5047
Depositing User: مهندس مهدی شریفی
URI: http://eprints.bmsu.ac.ir/id/eprint/5275

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