Table 2

 Patient impact (outcome)

Reports n (%)Total errors weighted for repeats n (%)
Incident had the capacity to cause error—potential error with no specific patient16 (3)87 (3)
Error or potential error occurred but did not reach patient64 (10)109 (4)
Error reached patient but did not cause harm (includes dose omissions with no negative500 (79)2311 (85)
    effects)
Error required monitoring or intervention to preclude harm46 (7)217 (8)
Error contributed to, or resulted in, temporary harm to the patient and required2 (<1)2 (<1)
    intervention
Error contributed to, or resulted in, temporary harm requiring transfer to an emergency1 (<1)3 (<1)
    department
Error contributed to, or resulted in, permanent patient harm0 (0)0 (0)
Error required intervention necessary to sustain life2 (<1)2 (<1)
Error my have contributed to, or resulted in, the patient’s death0 (0)0 (0)
Total631 (100)2731 (100)