Table 1 Sensitivity and specificity analysis (clinical study; n = 635 [Sierra Leone])—logistic model
From: Overcoming the challenges of iris scanning to identify minors (1–4 years) in the real-world setting
Age | Estimate (95% CI) | p value vs infant identification using parent/guardian performance accuracy | p value vs adult performance accuracy |
|---|---|---|---|
Sensitivity in matching population | |||
1 year | 0.896 (0.834–0.936) | 0.0028 | < 0.0001 |
2 years | 0.932 (0.886–0.960) | < 0.0001 | < 0.0001 |
3 years | 1.0000 (0.961–1.000) | < 0.0001 | 1.0000a |
4 years | 0.988 (0.921–0.998) | 0.0013 | < 0.0001 |
Specificity in matching population | |||
1 year | 0.993 (0.952–0.999) | 0.0002 | < 0.0001 |
2 years | 0.948 (0.905–0.972) | < 0.0001 | < 0.0001 |
3 years | 0.946 (0.876–0.977) | 0.0007 | <0.0001 |
4 years | 0.918 (0.837–0.960) | 0.0050 | < 0.0001 |
Sensitivity in enrolled participants (instances in which the matching procedure could not be performed included as failures) | |||
1 year | 0.563 (0.498–0.626) | 1.0000 | < 0.0001 |
2 years | 0.802 (0.744–0.849) | 0.4955 | < 0.0001 |
3 years | 0.939 (0.870–0.972) | 0.0008 | < 0.0001 |
4 years | 0.977 (0.912–0.994) | 0.0005 | < 0.0001 |
Specificity in enrolled participants (instances in which the matching procedure could not be performed included as failures) | |||
1 year | 0.624 (0.560–0.685) | 1.0000 | < 0.0001 |
2 years | 0.815 (0.759–0.861) | 0.3030 | < 0.0001 |
3 years | 0.888 (0.809–0.937) | 0.0178 | < 0.0001 |
4 years | 0.907 (0.825–0.953) | 0.0088 | < 0.0001 |