The findings indicate that when a nurse spends one
additional hour on IM/SQ Administration, it saves
$451.39 of hospital direct costs and decreases the
occurrence of complications by a factor of 0.04. The
estimates of direct effects on hospital direct costs in
Figure 2b are re-transformed to the original dollar
amount scale by multiplying the ratio of the log change in hospital cost per unit for the corresponding predictor
minus one times the mean hospital direct costs
($4,333.37). For example, the amount of –$451.39 is
obtained by calculating (e0.11–1) 9 4333.37.