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Global performances of the Damerau-Levenshtein distance (DLD)–based algorithm versus that of the direct-matching algorithm.
| Matching algorithm | Sample size, N | Sensitivity, % (95% CI) | Specificity, % (95% CI) |
| Distance-baseda | 21860 | 93.3 (92.8-93.9) | 99 (98.7-99.2) |
| Direct | 21860 | 82.7 (81.8–83.6) | 99.9 (99.8-100) |
| P value McNemar test | N/Ab | <.001 | <.001 |
aMaximal total distance: 2.
bN/A: not applicable.
