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. 2014 Mar 26;18(2):R53. doi: 10.1186/cc13799

Table 4.

Time-series analysis of the accumulated monthly effect of each intervention individually and of the whole bundle of measures

    Beta 95% CI Beta P
VAP rate*
  
 Mean change by month
  
  
Full model
 Before and after training
 0.50
 0.29
 0.84
 0.009
 
 Before and after ASS
 1.05
 0.60
 1.85
 0.856
 
 Before and after inclinometer
 0.26
 0.09
 0.74
 0.011
 
 Before and after oral care
 0.02
 0.01
 0.03
 0.117
Final model
 Before and after training
 0.51
 0.34
 0.78
 0.002
 
 Before and after inclinometer
 0.45
 0.24
 0.84
 0.013
 
 Bundle
 0.41
 0.28
 0.62
 <0.001
Cost of antimicrobial/1,000 days of stay
  
  
  
  
  
Full model
 (Constant)
 56,800
 29.84
 83.77
 0.000
 
 Before and after training
 -2.010
 -45.11
 41.09
 0.925
 
 Before and after ASS
 -87.040
 -133.81
 -40.26
 0.001
 
 Before and after inclinometer
 -37.030
 -81.77
 7.71
 0.102
 
 Before and after oral care
 -12.060
 -54.31
 30.20
 0.567
 
 Monthly change
 2.760
 -0.58
 6.10
 0.102
Final model
 (Constant)
 59,110
 33.93
 84.30
 0.000
 
 Before and after ASS
 -82,600
 -122.64
 -42.55
 0.000
 
 Before and after inclinometer
 -37,840
 -73.79
 -1.90
 0.040
 
 Monthly change
 2,420
 0.35
 4.50
 0.023
 
 Bundle
 -17,840
 -47.59
 11.92
 0.233
Days of MV/1,000 days of stay
  
  
  
  
  
Full model
 (Constant)
 489.47
 402.19
 576.75
 0.000
 
 Before and after training
 -128.51
 -268.02
 11.00
 0.070
 
 Before and after ASS
 -93.99
 -245.38
 57.39
 0.216
 
 Before and after inclinometer
 -51.81
 -196.61
 92.99
 0.473
 
 Before and after oral care
 26.75
 -110.01
 163.52
 0.694
 
 Monthly change
 3.54
 -7.26
 14.34
 0.511
Final model
 (Constant)
 507.17
 439.70
 574.65
 0.000
 
 Before and after training
 -131.70
 -207.35
 -56.04
 0.001
  Bundle -131.70 -207.35 -56.04 0.001

*Data was expressed as incidence rate ratio by Poisson model.