Mixed-effect logistic regression models
| Variable* | Model 1: any AE | Model 2: preventable AE | ||
| OR | 95% CI | OR | 95% CI | |
| Hospital B | 0.42 | 0.28 to 0.63 | 0.36 | 0.23 to 0.56 |
| Hospital C | 0.59 | 0.41 to 0.86 | 0.73 | 0.49 to 1.07 |
| Hospital D | 0.18 | 0.12 to 0.29 | 0.24 | 0.15 to 0.38 |
| Hospital E | 0.49 | 0.30 to 0.79 | 0.59 | 0.36 to 0.98 |
| Age | 1.01 | 1.00 to 1.01 | 1.01 | 1.00 to 1.01 |
| Elixhauser score | 1.00 | 0.98 to 1.03 | 1.01 | 0.99 to 1.03 |
| Female/male | 0.91 | 0.69 to 1.20 | 0.99 | 0.74 to 1.33 |
*Observer was a random variable.
AE, adverse event.