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| Variables (continuous) | No hypoxemia (n = 4659) | Hypoxemia (n = 245) | P value |
| Age | 58±15.1 | 60.2±16.1 | 0.0295 |
| BMI | 23.4±4 | 24.4±4.5 | 0.0006 |
| Midazolam | 3.1±4.7 | 2.8±3.5 | 0.3628 |
| Propofol | 9.5±16.3 | 8.3±8.5 | 0.2469 |
BMI Body Mass Index.
Mean ± standard deviation are presented in the table.
