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Table 3 Performance of linkage algorithms and thresholds

From: Evaluation of record linkage of two large administrative databases in a middle income country: stillbirths and notifications of dengue during pregnancy in Brazil

  Bespoke algorithm ReclinkIII algorithm
Conservative threshold = 21 Relaxed threshold = 20 Conservative threshold = 12 Relaxed threshold = 10
N linked 131 193 125 788
N true links 123 132 102 114
N false-matches 8 61 23 674
N missed-matches 68 59 89 77
Sensitivity % (95% CI) 64.4 (57.2–71.2) 69.1 (62.0–75.6) 53.4 (46.1–60.6) 59.7 (52.4–66.7)
Positive predictive value % (95% CI) 93.9 (86.6–96.3) 68.4 (61.3–74.8) 81.6 (73.7–87.9) 14.5 (12.1–17.1)