“…Several problems were encountered, including the following: (a) data for some variables were not available from all hospitals' CISs because they were not documented electronically; (b) data for some variables were available electronically, but were in other systems not connected to the EHR; (c) data for some variables were not available because the data were not documented electronically or in paper forms; (d) even when standardized nomenclatures were used, there were inconsistencies in the way the same information was documented (e.g., textual descriptions rather than codes and variable text corresponding to a single code); (e) each nursing diagnosis was not linked with specific outcomes and specific nursing interventions to address the outcomes for each diagnosis; and (f) standardized nursing nomenclatures were not used to fully integrate and link care planned with care actually delivered. Because of these problems, complete data could not be retrieved for patient comorbid conditions, medications, race/ethnicity, nursing acuity, severity of illness, occupation, medical and other treatments, and primary language (Head, Scherb, Maas, et al., ). Importantly, data could not be retrieved to analyze the effectiveness of care that was actually received by the patients.…”