Table 5 Individual image evaluation and suggested follow-up
Images with diabetic retinopathy (n=518) | Images without diabetic retinopathy (n=518) | |||||||
|---|---|---|---|---|---|---|---|---|
True positive sensitivity | False negative | True negative specificity | False positive | |||||
n | % | n | % | n | % | n | % | |
Screening standard set to meet a | 414 | 80 | 104 | 20 | 492 | 95 | 26 | 5 |
n | % (95%CI) | n | % (95%CI) | n | % (95%CI) | n | % (95%CI) | |
Optometrists’ image evaluation | 348 | 67 (62 to 72) | 170 | 32 (28 to 38) | 437 | 84 (80 to 89) | 81 | 16 (11 to 20) |
Further managementb | ||||||||
None / Routine follow up | 5 | 1 (0 to 3) | 113 | 66 (59 to 74) | 296 | 68 (64 to 72) | 3 | 4 (0 to 8) |
Report / referral to general practitioner | 84 | 24 (20 to 29) | 41 | 24 (18 to 21) | 69 | 16 (12 to 19) | 39 | 48 (37 to 59) |
Report / referral to ophthalmologist | 255 | 74 (70 to 79) | 16 | 9 (5 to 14) | 71 | 16 (13 to 20) | 39 | 48 (37 to 59) |