A Multicenter Masked Study to Compare Analysis of the Detection Program IDx-DR Against Standard of Care Clinical Examination by Ophthalmologists to Differentiate Levels of Diabetic Retinopathy and Diabetic Macular Edema
概览
- 阶段
- 不适用
- 干预措施
- 未指定
- 疾病 / 适应症
- Diabetic Retinopathy
- 发起方
- Digital Diagnostics, Inc.
- 入组人数
- 600
- 试验地点
- 5
- 主要终点
- Sensitivity of detecting moderate non proliferative diabetic retinopathy or more severe DR and/or significant macular edema on a person-specific basis.
- 状态
- 已完成
- 最后更新
- 12年前
概览
简要总结
The hypothesis is that computer detection of the severity of diabetic retinopathy including the presence of clinically significant macular edema is not inferior to the detection using a dilated eye examination by a Board-certified ophthalmologist.
详细描述
The project is a multicenter, observational study to compare the accuracy of the IDX-DR computer detection system to board certified ophthalmologists performing dilated eye examination at identifying between no or mild NPDR without clinically significant diabetic macular edema from more than mild NPDR with or without CSDME. Approximately 400-600 persons with diabetes will be recruited through 5 clinical centers. The ophthalmologist who examines the patient will evaluate and record the status of the eye based on his/her clinical examination. The study subjects will then have two fundus photographs taken of each eye. The photographic images will be transferred to a central Reading Center at the University of Pennsylvania and interpreted by professional graders. The Reading Center will then transfer the images to IDx-DR, the computer detection system. IDx-LLC, the Sponsor of this study, will have no access to the images. Data from the Reading Center interpretation will be considered the "gold standard". The results of the clinical examination and IDX-DR will be compared against this gold standard as well as against each other.
研究者
入排标准
入选标准
- •a diagnosis of diabetes mellitus
- •subject understands study and has signed informed consent
- •no history of any other retinal vascular disease, glaucoma, or other disease that may affect the appearance of the retina or optic disc (refractive error and ocular surface disease are allowed);
- •other than cataract surgery, no history of intraocular surgery, ocular laser treatments for any retinal disease, or ocular injections for diabetic macular edema or proliferative disease
- •no media opacity precluding good retinal photography
- •age 18 or older
排除标准
- •no diagnosis of diabetes mellitus
- •potential subject cannot understand study or informed consent
- •a history of retinal vascular disease other than due to diabetic retinopathy, glaucoma, or other disease that may affect the appearance of the retina or optic disc
- •previous intraocular surgery other than cataract; previous laser to the retina; or previous intraocular injections for the treatment of diabetic retinopathy
- •a media opacity in either eye that is severe enough to preclude good retinal photography
结局指标
主要结局
Sensitivity of detecting moderate non proliferative diabetic retinopathy or more severe DR and/or significant macular edema on a person-specific basis.
时间窗: Recruitment over 4 months
If the interval excludes differences of 10% or more (IDx worse than clinical examination), then the IDx system will be considered non-inferior to clinical examination by ophthalmologists. If IDx is non-inferior to clinical examination, a two-sided test of the null hypothesis that the difference in sensitivities is 0 will be conducted to determine if the IDX is superior to clinical examination. 24 McNemar's test for paired proportions will be used to test the difference in proportions.
次要结局
- Specificity on an eye-specific basis [Clinical examination only](Four months)
- Specificity (true negatives divided by true negatives plus false positives) at detecting more than moderate non proliferative diabetic retinopathy and/or significant macular edema on a person-specific basis.(Four months)
- Sensitivity on an eye-specific basis [Clinical examination only](Four months)