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Table 4 The percentage of ADE deaths that are at a high risk of re-identification by matching to an obituary for different combinations of quasi-identifiers

From: Evaluating the risk of patient re-identification from adverse drug event reports

Quasi-identifiers ADE records at risk (%)
Province Age at death Gender Day of report Month of report Year of report p = 0.5 p = 0.7 p = 0.9
  X X X X X 1.95 3.46 5.05
  X X   X X 0 0 0
  X X    X 0 0 0
  2 yr X    X 0 0 0
  5 yr X    X 0 0 0
  10 yr X    X 0 0 0
X X X X X X 18.44 25.17 30.78
X X X   X X 0.21 0.4 0.63
X X X    X 0.12 0.24 0.39
X 2 yr X    X 0.04 0.07 0.13
X 5 yr X    X 0.02 0.03 0.05
X 10 yr X    X 0 0 0.01
  1. We considered age converted into a 2 year interval, 5 year interval, and a 10 year interval.