73 Level of digitization in Dutch hospitals and the lengths of stay Hypothesis 1: In hospitals withmore advanced EMR capabilities the likelihood of a shorter LOS on average of colorectal cancer surgery patients in the hospital increases. Hypothesis 2: In hospitals withmore advanced EMR capabilities the likelihood of a shorter LOS on average in the ICU of colorectal cancer surgery patients increases. Hypothesis 3: The likelihood of a shorter LOS on average of colorectal cancer surgery patients increases in academic affiliated hospitals with more advanced EMR capabilities. Hypothesis 4: The likelihood of a shorter LOS on average in the ICU of colorectal cancer surgery patients increases in academic affiliated hospitals with more advanced EMR capabilities. METHODS Data were collected from the DSCA. This disease specific registry contains information on patient, tumor, treatment, and short-term outcome characteristics. All hospitals in the Netherlands register their primary colorectal cancer patients that undergo a resection in this database. Details of this dataset regarding collection and methodology have been published previously. 15 16 Patients All patients undergoing surgical resection for primary colorectal cancer between January 1, 2012, and December 31, 2014, and registered in the DSCA before March 30, 2015, were evaluated in this study. For this study no ethical approval or informed consent was required under Dutch law. Minimal data requirements to consider a patient eligible for analyses were information on tumor location, date of surgery, and mortality. Patients with local excisions were excluded (n=393) Patients with LOS of 0 or less, or LOS that was missing were excluded (n=358), because the origin of this outcome is possibly grounded on registration mistakes. Hospitals Every hospital in the NL (N=93) was invited to participate in the EMRAM study. In 2014, 72 hospitals (80%) joined the EMRAM program. Of this group of hospitals (N=34) are 5
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