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Table 4 Discrepancy type and potential severity

From: A multicentre, double-blind, randomised, controlled, parallel-group study of the effectiveness of a pharmacist-acquired medication history in an emergency department

Type of discrepancy No. Class 1a Class 2b Class 3c
Incorrect or omitted dose 165 39 (23.6) 32 (19.4) 94 (57.0)
Therapeutic duplication 5 4 (80.0) 0 (0.00) 1 (20.0)
Incorrect or omitted frequency 6 0 (0.00) 4 (66.7) 2 (33.3)
Slow to restart drug therapy 156 28 (18.0) 103 (66.0) 25 (16.0)
No indication 2 0 (0.00) 2 (100) 0 (0.00)
Drug omission 447 190 (43.0) 187 (42.0) 70 (15.0)
Too soon to restart drug therapy 26 10 (38.0) 14 (54.0) 2 (8.0)
Inappropriate or omitted route 4 0 (0.00) 4 (100) 0 (0.00)
Total 811 271 (33.4) 346 (42.7) 194 (23.9)
  1. aClass 1: discrepancies unlikely to cause patient discomfort or clinical deterioration.
  2. bClass 2 discrepancies which could cause moderate discomfort or clinical deterioration.
  3. cClass 3 discrepancies potentially resulting in severe discomfort or clinical deterioration.
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