Multivariate analysis
| Potential harm | Odds using trigger categories | OR (95% CI) | P value |
| Operational triggers | 28.44 (8.70 to 92.94) | <0.01 | |
| Patient triggers | 1.19 (0.61 to 2.30) | 0.62 | |
| Interventional triggers | 42.63 (23.86 to 76.16) | <0.01 | |
| Age and diagnosis adjusted odds | |||
| Operational triggers | 26.96 (7.79 to 93.35) | <0.01 | |
| Patient triggers | 1.65 (0.80 to 3.44) | 0.18 | |
| Interventional triggers | 55.13 (29.68 to 102.42) | <0.01 | |
| Age category | |||
| 36–60 | 1.49 (0.85 to 2.60) | 0.16 | |
| >60 | 1.37 (0.55 to 3.42) | 0.50 | |
| Diagnosis | |||
| Cardiovascular | 1.95 (0.76 to 5.00) | 0.16 | |
| Respiratory | 11.03 (2.90 to 42.12) | <0.01 | |
| Neurological | 2.06 (0.66 to 6.39) | 0.21 | |
| Medical other | 1.53 (0.44 to 5.32) | 0.45 | |
| Head trauma | 1.62 (0.58 to 4.53) | 0.36 | |
| Poly trauma | 2.02 (0.70 to 5.82) | 0.19 | |
| Trauma other | 3.87 (1.53 to 9.80) | <0.01 | |
| Confirmed harm | Odds using trigger categories | ||
| Operational triggers | 2.82 (0.48 to 16.68) | 0.25 | |
| Patient triggers | 10.90 (3.32 to 35.71) | <0.01 | |
| Interventional triggers | 14.70 (1.78 to 121.16) | 0.01 | |
| Age and diagnosis adjusted odds | |||
| Operational triggers | 3.02 (0.42 to 21.78) | 0.27 | |
| Patient triggers | 6.50 (1.71 to 24.67) | 0.01 | |
| Interventional triggers | 11.85 (1.36 to 102.92) | 0.03 | |
| Age category | |||
| 36–60 | 1.97 (0.49 to 7.91) | 0.34 | |
| >60 | 0.77 (-0.07 to 9.10) | 0.84 | |
| Diagnosis | |||
| Cardiovascular | 0.25 (0.04 to 1.5) | 0.13 | |
| Respiratory | 1 | ||
| Neurological | 1 | ||
| Medical other | 1 | ||
| Head trauma | 0.13 (0.01 to 1.37) | 0.09 | |
| Poly trauma | 0.42 (0.08 to 2.19) | 0.30 | |
| Trauma other | 0.23 (0.03 to 1.51) | 0.13 | |
| Adverse events | Odds using trigger categories | ||
| Operational triggers | 27.48 (8.32 to 90.78) | <0.01 | |
| Patient triggers | 1.60 (0.80 to 3.17) | 0.18 | |
| Interventional triggers | 47.78 (26.74 to 85.37) | <0.01 | |
| Age and diagnosis adjusted odds | |||
| Operational triggers | 25.41 (7.31 to 88.26) | <0.01 | |
| Patient triggers | 2.11 (0.99 to 4.50) | 0.05 | |
| Interventional triggers | 62.98 (33.80 to 117.36) | <0.01 | |
| Age category | |||
| 36–60 | 1.72 (0.98 to 3.03) | 0.06 | |
| >60 | 1.22 (0.48 to 3.07) | 0.68 | |
| Diagnosis | |||
| Cardiovascular | 1.82 (0.71 to 4.65) | 0.21 | |
| Respiratory | 10.12 (2.62 to 39.15) | <0.01 | |
| Neurological | 1.67 (0.54 to 5.20) | 0.38 | |
| Medical other | 1.34 (0.39 to 4.65) | 0.65 | |
| Head trauma | 1.41 (0.50 to 3.96) | 0.51 | |
| Poly trauma | 2.50 (0.85 to 7.32) | 0.09 | |
| Trauma other | 3.55 (1.40 to 9.00) | 0.01 |