Table 3 Unadjusted adverse event rates by age group, by age group
|  | All patients | Age ≥ 65 years | Age < 65 years | Unadjusted OR for age ≥ 65 years | P Value |
|---|---|---|---|---|---|
Adverse events* | (n = 1,903) | (n = 975) | (n = 928) | (95% CI) |  |
Hypotension | 38 (2) | 28 (3) | 10 (1) | 2.7 (1.3–5.6) | 0.005 |
Other adverse events | |||||
 Dysrhythmia | 2 (< 1) | 0 | 2 (< 1) | †N/A | †N/A |
 Cardiac arrest | 6 (< 1) | 3 (< 1) | 3 (< 1) | 1.0 (0.2–4.7) | 0.95 |
 Death | 6 (< 1) | 2 (< 1) | 4 (< 1) | 0.5 (0.1–2.6) | 0.38 |
 Oesophageal intubation with delayed recognition | 90 (5) | 45 (5) | 46 (5) | 0.9 (0.6–1.4) | 0.82 |
 Dental/lip trauma | 68 (4) | 29 (3) | 39 (4) | 0.7 (0.4–1.1) | 0.15 |
 Mainstem bronchus intubation | 32 (2) | 22 (2) | 10 (1) | 2.1 (1.0–4.5) | 0.05 |
 Regurgitation | 35 (2) | 10 (1) | 25 (3) | 0.4 (0.2–0.8) | 0.007 |
 Hypoxemia | 8 (< 1) | 4 (< 1) | 4 (< 1) | 1.0 (0.2–3.8) | 0.94 |
 Airway trauma | 5 (< 1) | 2 (< 1) | 3 (< 1) | 0.6 (0.1–3.8) | 0.61 |
All groups combined | 256 (13) | 132 (14) | 124 (13) | 1.0 (0.8–1.3) | 0.91 |