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By Len Usvyat, PhD, Vice President, Integrated Care Analytics, FMCNA & Andrew Long, PhD, Senior Data Scientist, Integrated Care Analytics, FMCNA
In general, we can divide analytics into four main categories of increasing difficulty:
Descriptive analytics allows us to understand what happened historically and answer questions such as:
These types of questions can be answered by looking at historical data and using simple statistical measures such as counts, percentages, averages, and standard deviation. In general, these descriptive analytical measures can be tracked over time to see if a practice is meeting its goals.
Diagnostic analytics allows us to understand why it happened and answer questions such as:
These types of questions allow us to dig into the data a bit more, usually to understand or explain the answers found in descriptive analytics. For example, if we are trying to grow our home therapy program, we may discover from descriptive analytics that 10 percent of the population drops each month. The next logical question is why these patients dropped. In diagnostic analytics, we investigate the discharge reasons and measure the distribution of categories such as peritonitis, partner burnout, psychosocial issues, etc., by using statistical techniques to understand those reasons. As in descriptive analytics, diagnostic analytics involves an investigation of historical data.
Predictive analytics allows us to understand what will happen, creating predictions such as:
In predictive analytics, data scientists use historical data to train models to predict future events by employing advanced computational techniques such as machine learning. These models can take advantage of thousands of data elements in the electronic record for each patient and identify patterns from all patients in the database. By using predictive models, we can calculate risk scores for each patient and identify which patients may need additional attention. However, predictive analytics does not indicate how to prevent adverse events such as a hospitalization.
Prescriptive analytics allows us to understand what actions are needed to change the prediction, as in the following examples:
We can dig into predictive analytics to understand the factors that drive each model. By determining which factors can be changed to lower the score, we can start to create prescriptive interventions that will lead to better outcomes. Prescriptive analytics is the most advanced healthcare analytic because it allows us to make specific recommendations on patient care delivery interventions. Prescriptive analytics may concern the clinical community in that a machine is making medical decisions. However, healthcare analytics, specifically predictive modeling, is just a tool that clinical staff can use to improve efficiency and efficacy. In fact, studies show that the combination of human and machine works better than either one by itself.2
In summary, healthcare analytics is a tool that can be used to answer many questions about patients in a data-driven manner.