|
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
