Article Figures & Data
Tables
- Table 1.
Initial Estimates of Diagnostic Accuracy of Interpretation of Retinal Images of 34 Patients by Family Physicians
DR Finding Presumed DR No DR Total Fraction (%) 95% CI, % Retinal specialist results 3 — 31 34 3/34 (8) (2-24) Family physician results 1 7 26 34 8/34 (24) (11-41) Sensitivity 1/3 (33) (1-91) Specificity 24/31 (77) (59-90) PPV 1/8 (13) (0-53) NPV 24/26 (92) (75-99) Accuracy 25/34 (74) (56-87) DR, diabetic retinopathy; NPV, negative predictive value; PPV, positive predictive value; CI, confidence interval.
Question No. of Responses N (%) Did you find the retinal imaging an easy/efficient way of screening for eye disease as a result of having diabetes? 31 Yes 28 (90) No 1 (3) Unknown 2 (7) If you had to pay for retinal imaging out-of-pocket what is the maximum amount you would be willing to pay? 30 $25 7 (23) $50 14 (47) $75 3 (10) $100 2 (7) Unknown 4 (13) Phase 1 Accuracy Phase 2 Accuracy Family Physician Fraction (%) 95% CI Fraction (%) 95% CI 1 29/30 (97) (83, 99) 7/7 (100) (59, 100) 2 30/30 (100) (88, 100) 5/7 (71) (29, 96) 3 30/30 (100) (88, 100) 5/7 (71) (29, 96) 4 26/30 (87) (69, 96) 3/6 (50) (12, 88) 5 30/30 (100) (88, 100) 5/7 (71) (29, 96) Overall 145/150 (97) (92, 99) 25/34 (74) (56, 87)