Vuong Nguyen1, King Fai Calvin Leung1, Chu Luan Nguyen1, David Squirrell2, Rohan Essex3, Jennifer Arnold4, Stephanie Young5, Daniel Barthelmes1,6, Mark Gillies1. 1. Discipline of Ophthalmology, The University of Sydney, Save Sight Institute, Sydney Medical School, Sydney, New South Wales, Australia. 2. Department of Ophthalmology, The University of Auckland, Auckland, New Zealand. 3. Academic Unit of Ophthalmology, Australian National University, Acton, Australian Capital Territory, Australia. 4. Marsden Eye Specialists, Parramatta, New South Wales, Australia. 5. Gladesville Retina, Gladesville, New South Wales, Australia; and. 6. Department of Ophthalmology, The University of Zurich, University Hospital Zurich, Zurich, Switzerland.
Abstract
PURPOSE: To evaluate the accuracy of an observational database that tracks real-world treatment outcomes for neovascular age-related macular degeneration. METHODS: We audited 245 randomly sampled eyes from 189 patients with 3,356 visits from 11 doctors in the Fight Retinal Blindness! DATABASE: Sex, birth year, previous treatments received, treatment, and visual acuity were validated against the clinical notes. Error rates, the proportion of missed visits (the number of visits present in the patient record but not entered into Fight Retinal Blindness!), the level of agreement using Cohen's kappa (κ) and intraclass correlation coefficients, and positive and negative predictive values were calculated. A visual acuity error was defined as an absolute difference of ≥5 letters. RESULTS: The overall error rate was 3.5% (95% confidence interval: 3.1-3.9). The error rate for visual acuity was 5.1% (95% confidence interval: 4.2-5.9) and <5% for the remaining fields. The level of agreement for each field ranged from good to excellent (κ or intraclass correlation ≥ 0.75). The positive predictive value and negative predictive value for visits were 99% and 89%, respectively. The proportion of missed visits was 10.2%. CONCLUSION: Accuracy of the Fight Retinal Blindness! database was good (>95%). The rate of missed visits was high, possibly due to the high burden of retrospective data entry or patients switching practitioners during treatment.
PURPOSE: To evaluate the accuracy of an observational database that tracks real-world treatment outcomes for neovascular age-related macular degeneration. METHODS: We audited 245 randomly sampled eyes from 189 patients with 3,356 visits from 11 doctors in the Fight Retinal Blindness! DATABASE: Sex, birth year, previous treatments received, treatment, and visual acuity were validated against the clinical notes. Error rates, the proportion of missed visits (the number of visits present in the patient record but not entered into Fight Retinal Blindness!), the level of agreement using Cohen's kappa (κ) and intraclass correlation coefficients, and positive and negative predictive values were calculated. A visual acuity error was defined as an absolute difference of ≥5 letters. RESULTS: The overall error rate was 3.5% (95% confidence interval: 3.1-3.9). The error rate for visual acuity was 5.1% (95% confidence interval: 4.2-5.9) and <5% for the remaining fields. The level of agreement for each field ranged from good to excellent (κ or intraclass correlation ≥ 0.75). The positive predictive value and negative predictive value for visits were 99% and 89%, respectively. The proportion of missed visits was 10.2%. CONCLUSION: Accuracy of the Fight Retinal Blindness! database was good (>95%). The rate of missed visits was high, possibly due to the high burden of retrospective data entry or patients switching practitioners during treatment.
Authors: Frank D Verbraak; Dirk L Ponsioen; Odette A M Tigchelaar-Besling; Vuong Nguyen; Mark C Gillies; Daniel Barthelmes; Caroline C W Klaver Journal: Acta Ophthalmol Date: 2020-12-23 Impact factor: 3.761