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Table 2 Classification of ADEs per ADE code: absolute and relative frequencies

From: Improving drug safety in hospitals: a retrospective study on the potential of adverse drug events coded in routine data

Group N[%] cases per ADE code
A04.7 D68.33 D68.34 D68.35 D69.52 D69.53 I95.2 K52.1 L27.0 L27.1 N99.0   Total 95% CI
G0 - event without drug relationship 15 [7.1] 0 0 0 0 0 0 0 0 0 2 [1.9]   17 [1.3] 0.8–2.1
G1 - known npADE 195 [92.9] 42 [91.3] 7 [100] 12 [100] 9 [100] 41 [100] 401 [99.0] 87 [98.9] 209 [93.7] 138 [89.6] 103 [96.2]   1244 [95.6] 94.3–96.6
G2 – previously unknown npADE 0 0 0 0 0 0 0 1 [1.1] 0 2 [1.3] 0   3 [0.2] 0.1–0.7
G3 - pADE 0 4 [8.7] 0 0 0 0 3 [0.7] 0 14 [6.3] 14 [9.1] 2 [1.9]   37 [2.8] 2.0–3.9
G4 – event after drug abuse 0 0 0 0 0 0 1 [0.3] 0 0 0 0   1 [0.1] 0–0.4
Total 210 46 7 12 9 41 405 88 223 154 107   1302  
  1. npADE non-preventable adverse drug event, pADE preventable adverse drug event, CI confidence interval