Explanatory variables | Lag (months) | Coefficents | Standard error | T-ratio | p value |
|---|
Constant | 0 | 2.1900 | 0.2112 | 10.37 | < 0.001 |
Short-term Intervention | 0 | − 7.2215 | 3.4530 | − 2.09 | < 0.05 |
Long-term Intervention | 0 | − 2.2161 | 0.6353 | − 3.49 | < 0.01 |
Imported CRAB | 1 | 0.7156 | 0.1534 | 4.67 | < 0.01 |
ICU-CRAB (MA) | 2 | 0.4791 | 0.0940 | 5.09 | < 0.01 |
ICU-CRAB (MA) | 5 | 0.6079 | 0.0877 | 6.93 | < 0.001 |
ICU-CRAB (AR) | 1 | 0.4149 | 0.097 | 4.26 | < 0.01 |
- R2: 0.352, Effective Number of observations: 82
- Interpretation of coefficients:
- Every change by one unity of an explaining series, implies a change of (the value of the coefficient) lagged by calculated lags (in month) in the dependent series (± t*SE)
- The short-term intervention coefficient means that in the period postintervention a diminution of -7.2 (± 1.96*3.3452*0.69) new cases of nosocomial ICU CRAB/1000 bed-days was observed
- The long-term intervention coefficient means that in the period postintervention a diminution of 2.2 (± 1.96*0.63) new cases of nosocomial ICU CRAB/1000 bed-days was observed
- Imported CRAB term means that for every new imported ICU case, 0.72 new ICU cases occurred one month later
- ICU CRAB term indicates the impact of past values of the own dependent series:
- - AR: Autoregressive term, reflecting impact of previous CRAB-ID (past inertia lagged by 1 month)
- - MA: Moving Average term (past abrupt changes lagged by 2 and 5 months)
- ICU-CRAB ID: nosocomial colonization or infection by carbapenem-resistant A. baumannii Incidence Density
