Decision support tool appears to safely reduce CSF use

The decision support tool evaluated in the study uses preauthorization before delivery of care and, therefore, differs from point-of-care interventions, he noted.

“The tool allows access to a library of chemotherapy regimens and their associated, expected febrile neutropenia risk based on the myelotoxicity of the planned regimens as indicated in published trials. The tool is accessible online and provides real-time recommendations that are tailored based on disease- and patient-specific factors for either the use of CSF or not,” he elaborated.

According to the tool’s algorithm, use is recommended for patients who are given a regimen with a high risk of febrile neutropenia (greater than 20%) and is not recommended for those given a low-risk regimen (less than 10%). It is tailored according to the presence of additional risk factors for the intermediate-risk group.

Oncologists use the tool only for patients starting a new chemotherapy and only in the first cycle, when the risk of febrile neutropenia is highest, according to Dr. Agiro. “Once the approval is given in the first cycle, it remains in effect for the next 6 months, so they don’t have to use it again and again in additional cycles,” he explained.

The decision support tool was implemented in nine states starting in July 2014. In the study, which was funded by Anthem, the investigators analyzed administrative claims data from commercially insured adult patients starting chemotherapy for lung cancer, assessing changes in outcomes between a preimplementation period (April 2013 to Dec. 2013) and a postimplementation period (July 2014 to March 2015).

Analyses were based on 1,857 patients in the states that implemented the tool and 1,610 patients in the states that did not.

The percentage of patients receiving CSFs in the 6 months after starting chemotherapy fell in states that implemented the decision support tool (from 48.4% to 35.6%) but remained stable in states that did not (43.2% and 44.4%), Dr. Agiro reported. The adjusted difference in differences was –8.7% (P less than .001).

Meanwhile, the percentage of patients admitted for febrile neutropenia or experiencing this outcome while hospitalized increased in both states implementing the tool (from 2.8% to 4.3%) and those not implementing it (from 3.1% to 5.1%). Although the magnitude of increase was smaller in the former (+1.5% vs. +2.0%), the difference was not significant. Findings were essentially the same among the subset of patients aged 65 years and older.

“It’s important to study both intended and unintended consequences of such interventions,” Dr. Agiro noted. “Our study goes beyond financial considerations by looking at unintended outcomes: in this case, focusing on the incidence of febrile neutropenia, an outcome that is of prime interest to patients and oncologists and payers alike.”

The study may have missed some cases of febrile neutropenia, he acknowledged. “Also, there are other important outcomes of concern. For example, were there any delays in chemotherapy administration or immune recovery that could have been triggered by the implementation of the decision support program?”

The impact, both intended and unintended, on practices warrants evaluation as well, he further noted. “An important question could be, ‘Does it take less time to use this decision support tool compared to the time taken with normal care processes?’ ”

Dr. Agiro disclosed that he is employed by, has stock or other ownership interests in, and receives research funding from Anthem.