Table 3.
Estimated Ventilator-Associated Event Incidence Rate Ratios Based on Mixed Effects Poisson Regression Models
| Model Terms | VAE | IVAC | PVAP |
|---|---|---|---|
| Quarter | 0.94 [0.91, 0.98] | 0.89 [0.84, 0.94] | 0.83 [0.75, 0.93] |
|
| |||
| Maryland | Reference | Reference | Reference |
| Pennsylvania | 0.68 [0.32, 1.44] | 0.97 [0.50, 1.89] | 0.94 [0.39, 2.24] |
|
| |||
| Nonteaching | Reference | Reference | Reference |
| Teaching | 0.77 [0.29, 2.07] | 0.69 [0.29, 1.68] | 1.42 [0.48, 4.23] |
|
| |||
| Small (<99 beds) | Reference | Reference | Reference |
| Medium (100–499 beds) | 5.02 [0.92, 27.48] | 6.60 [1.04, 41.99] | NA |
| Large (>=500 beds) | 5.60 [0.90, 34.87] | 7.39 [1.04, 52.65] | NA |
|
| |||
| Urban | Reference | Reference | Reference |
| Suburban | 0.48 [0.21, 1.09] | 0.53 [0.25, 1.15] | 0.77 [0.26, 2.29] |
| Rural | 0.80 [0.19, 3.40] | 1.34 [0.37, 4.86] | 1.27 [0.25, 6.54] |
|
| |||
| Mixed | Reference | Reference | Reference |
| Medical | 0.53 [0.25, 1.11] | 0.33 [0.16, 0.67] | 0.38 [0.15, 0.96] |
| Surgical/Trauma | 1.16 [0.46, 2.94] | 1.58 [0.76, 3.30] | 1.75 [0.70, 4.35] |
| Cardiac | 0.60 [0.20, 1.81] | 0.71 [0.27, 1.87] | 0.44 [0.10, 1.89] |
Abbreviations: VAE, ventilator-associated event; IVAC, infection-related ventilator-associated complications; PVAP, probable and possible ventilator-associated pneumonia.