Table 3.
Multivariable model of predictors of the rate of CRE in the Greater Houston region, Texas, 2015–2020
| Factors | Adjusted rate ratio | 95% CI | Adjusted P value |
|---|---|---|---|
| Race/Ethnicity | |||
| Asian | 1.0 | 1 | |
| Black | 1.22 | 1.05–1.42 | 0.011 |
| White | 1.23 | 1.05–1.43 | 0.008 |
| Hispanic | 1.06 | 0.89–1.25 | 0.525 |
| Other or mixed | 0.99 | 0.80–1.23 | 0.949 |
| Unknown | 1.07 | 0.90–1.27 | 0.429 |
| Carbapenemase production | |||
| Carbapenemase positive | 1.19 | 1.07–1.32 | 0.002 |
| Carbapenemase unknown | 1.61 | 1.48–1.75 | < 0.001 |
| Carbapenemase negative | 1.0 | 1 | |
| Case reported from | |||
| Acute care hospital | 1.16 | 1.04–1.30 | 0.008 |
| Long-term acute | 1.16 | 1.04–1.30 | 0.008 |
| Long-term care facility | 1.0 | 1.00–1.00 | 0.000 |
| Home healthcare | 1.01 | 0.80–1.27 | 0.902 |
| Outpatient clinic | 1.0 | 1 | |
| Case admitted from | |||
| Acute care hospital | 0.91 | 0.80–1.04 | 0.166 |
| Long-term acute | 0.93 | 0.81–1.08 | 0.347 |
| Long-term care facilities | 1.0 | 1.00–1.00 | 0.000 |
| Home or home healthcare | 1.0 | 1 | |
| Indwelling medical devices (yes vs. no) | 0.85 | 0.79–0.92 | < 0.001 |
| Underlying illness or chronic disease (yes vs. no or unknown) | 1.15 | 0.98–1.17 | 0.140 |
NOTE: The model was based on the GEE method and used to account for within-subject measures using an exchangeable correlation structure with the negative binomial distribution assumption.