Table 5. Agreement with gold standard among records with the lowest weights, blocking on DOB.
| Linkage Run Name | String Matching | Weight Determination | Number (%) Pairs with Lowest Weight | Number (%) Pairs with First or Second Lowest Weight | ||
|---|---|---|---|---|---|---|
| Agreement with inpatient MRN | ||||||
| No | Yes | No | Yes | |||
| R/EX/FS | Exact | Prob-FS | 176,066 (100) | 0 (0) | 364,871 (99.9) | 468 (0.1%) |
| R/EX/EM | Exact | Prob-EM | 176,066 (100) | 0 (0) | 364,871 (99.9) | 468 (0.1%) |
| R/EX/EPI | Exact | Prob-EPI | 176,066 (100) | 0 (0) | 364,871 (99.9) | 468 (0.1%) |
| MTB/EX/FS | Exact | Prob-FS | 176,056 (100) | 0 (0) | 176,066 (100) | 0 (0) |
| MTB/EX/EM | Exact | Prob-EM | 176,056 (100) | 0 (0) | 176,066 | 0 (0) |
| MTB/EX/D | Exact | Det | 176,066 (100) | 0 (0) | 365,038 | 471 (0.1%) |
| CU/EX/FS | Exact | Prob-FS | 176,048 (100) | 0 (0) | 176,058 | 0 (0) |
| LP/EX/FS | Exact | Prob-FS | 176,056 (100) | 0 (0) | 176,066 | 0 (0) |
| LP/EX/EM | Exact | Prob-EM | 176,056 (100) | 0 (0) | 176,066 | 0 (0) |
| R/INEX/FS | Inexact | Prob-FS | 176,018 (100) | 0 (0) | 364,693 | 420 (0.1%) |
| R/INEX/EM | Inexact | Prob-EM | 176,018 (100) | 0 (0) | 364,693 | 420 (0.1%) |
| MTB/INEX/FS | Inexact | Prob-FS | 5,691 (100) | 0 (0) | 5,692 | 0 (0) |
| MTB/INEX/EM | Inexact | Prob-EM | 5,691 (100) | 0 (0) | 5,692 | 0 (0) |
| MTB/INEX/D | Inexact | Det | 5,692 (100) | 0 (0) | 5,693 | 0 (0) |
| CU/INEX/FS | Inexact | Prob-FS | 173,105 (100) | 0 (0) | 173,107 | 0 (0) |
| LP/INEX/FS | Inexact | Prob-FS | 84 (98.8) | 1 (1.2) | a | a |
| LP/INEX/EM | Inexact | Prob-EM | 84 (98.8) | 1 (1.2) | a | a |
DOB, date of birth; MRN, medical record number; R, R package; MTB, Merge ToolBox; CU, Curtin University Probabilistic Linkage Engine; LP, Link Plus; Prob-FS, probabilistic, Fellegi-Sunter; Prob-EM, probabilistic, expectation-maximization; Prob-EPI, probabilistic, EpiLink; Det, deterministic.
a Low weights were unrecoverable in Link Plus using inexact string matching.