Factor | Reference | Level | p | OR | 95% CI | |
Lower | Upper | |||||
Age | (Continuous covariate) | 0.030 | 1.01 | 1.00 | 1.03 | |
Sex | Male | Female | 0.480 | 1.23 | 0.69 | 2.17 |
Procedure | Shoulder | 0.007 | ||||
Ankle | 0.907 | 0.95 | 0.41 | 2.20 | ||
Hip | 0.007 | 2.71 | 1.31 | 5.58 | ||
Other | 0.535 | 0.77 | 0.33 | 1.77 | ||
Maximum sedation score | 1–3 | 0.000 | ||||
4 | 0.000 | 4.46 | 2.29 | 8.68 | ||
5 | 0.000 | 14.76 | 5.24 | 41.58 | ||
Time of procedure | 08:00–19:59 | 20:00–07:59 | 0.021 | 1.96 | 1.11 | 3.48 |
Pre-procedure pulse | 60–100 | <60 or >100 | 0.607 | 0.82 | 0.38 | 1.77 |
Pre-procedure RR | 12–20 | <12 or >20 | 0.936 | 0.96 | 0.37 | 2.48 |
Pre-procedure SBP | 100–180 | <100 or >180 | 0.598 | 1.33 | 0.46 | 3.79 |
Pre-procedure Spo2 | ≥96 | <96 | 0.507 | 1.35 | 0.56 | 3.24 |
Most senior doctor | Consultant or equivalent | Other grades | 0.734 | 0.90 | 0.48 | 1.67 |
Number of agents used | 1 or 2 | 3 or 4 | 0.434 | 1.26 | 0.71 | 2.22 |
Analgesic used | Fentanyl | Morphine | 0.377 | 0.77 | 0.43 | 1.38 |
Sedative used | Propofol | Midazolam | 0.285 | 0.71 | 0.37 | 1.34 |
RR, respiratory rate; SBP, systolic blood pressure; Spo2, oxygen saturation.