Table 4
Sensitivity and specificity of the detection of any retinopathy with different photograph strategies (only gradable photographs included). No statistically significant difference between photography strategies
| Undilated single field (n = 585) | Dilated single field (n = 750) | Dilated multiple field (n = 752) | |
|---|---|---|---|
| Detection of any retinopathy | |||
| Sensitivity (95% CI) | 83% (78–88%) | 86% (82–90%) | 90% (86–93%) |
| Specificity (95% CI) | 91% (88–94%) | 91% (89–94%) | 90% (88–93%) |
| Positive predictive value (95% CI) | 85% (80–90%) | 87% (83–91%) | 86% (82–90%) |
| Negative predictive value (95% CI) | 90% (87–93%) | 91% (88–94%) | 93% (91–95%) |
| Detection of referable retinopathy | |||
| Sensitivity (95% CI) | 77% (71–84%) | 81% (76–87%) | 83% (78–88%) |
| Specificity (95% CI) | 95% (93–97%) | 92% (90–94%) | 93% (91–96%) |
| Positive predictive value (95% CI) | 85% (79–91%) | 79% (73–85%) | 82% (77–87%) |
| Negative predictive value (95% CI) | 92% (89–95%) | 93% (91–95%) | 94% (92–96%) |
