Costs of hospital-acquired Clostridium difficile infections: an analysis on the effect of time-dependent exposures using routine and surveillance data

Table 2 Main regression results

Outcome variables	(1)	(2)
Outcome variables	Ignoring time-dependent CDI exposure	Using time-to-exposure stratification
Costs	1.08*** [1.00;1.15]	0.31*** [0.25;0.37]
Marginal effect	23,313*** [20,772;25,854]	9016*** [7152;10,880]
Reimbursement	0.94*** [0.87;1.01]	0.29*** [0.23;0.352
Marginal effect	18,678*** [16,580;20,776]	7838*** [6072;9605]
Extra length of stay	0.96*** [0.87;1.02]	0.22*** [0.18;0.26]
Marginal effect	21.6*** [19.6;23.6]	6.4*** [5.1;7.8]
N	2709	2500

This table summarizes a total of six GLM regression analyses, each using a gamma distribution and a log link function. Each cell gives the effect of CDI infection on the respective outcome on the left from different GLM regressions. All regressions use a within-main-diagnosis estimation and control for comorbidities according to Resch (2008), for age, age², and for sex. Regressions in the second column additionally apply a time-to-exposure stratification. 95% confidence intervals are in brackets
* p < 0.1, ** p < 0.05, *** p < 0.01

ISSN: 1478-7547