Table 1

Adverse drug event and patient characteristics

Insulin-related hypoglycaemiaOpiate-related oversedation
Study dates8/12/06–31/3/088/7/06–31/3/08
No of triggers5059
No of adverse drug events3034
Positive predictive value of trigger30/50 (60.0%)34/59 (57.6%)
Events reported to the voluntary safety reporting system within 24 h of the event2/30 (6.7%)3/34 (8.8%)
Male patients15/30 (50.0%)21/34 (61.8%)
Age of patient, years
 0–29/30 (30.0%)16/34 (47.1%)
 2–45/30 (16.7%)4/34 (11.8%)
 4–100/30 (0.0%)0/34 (0.0%)
 10–136/30 (20.0%)7/34 (20.6%)
 13–150/30 (0.0%)0.0% (0.0%)
 ≥1510/30 (33.3%)7/34 (20.6%
Level of harm30
 Level 5 (temporary harm, intervention required)28/30 (93.3%)31/34 (91.2%)
 Level 6 (temporary harm, initial or prolonged hospitalisation required)2/30 (6.7%)2/34 (5.9%)
 Level 7–9 (permanent harm or death)0(0.0%)1/34 (2.9%)