1/13/2024 0 Comments Minitab regression analysis![]() Primary Ingestion Route of Sub and Referral Source are about 48% as important as Alcohol Use.Īlthough these results include 33 variables with positive importance, the relative rankings provide information about how many variables to control or monitor for a certain application.Heroin Use is about 55% as important as Alcohol Use.Primary Substance of Abuse and Planned Medication Therapy are about 92% as important as Alcohol Use.The following list describes the next most important variables in this tree: Thus, you can focus on the most important predictors. If the contribution of the top predictor variable, Alcohol Use, is 100%, then you can compare the other variables to Alcohol Use to determine their importance. The chart of the relative importance of the variables shows that the most important predictor variable is Alcohol Use. In Categorical predictors, enter Other Stimulant Use- DSM Diagnosis.In Continuous predictors, enter Age at Admission- Years of Education.Open the sample data set LengthOfService.MTW.Regression to further evaluate their data. Regression automatically handles missing values in predictor variables, the team decides to use CART ® The analytical results from the cases without any missing data can be very different from the results using the entire data set. The omission of such a large percentage of data implies that a lot of information is lost. Because of the missing value pattern in their data, the analysis omits over 70% of the data. These variables include demographic information and variables about the patient's substance abuse.įirst, the team considers a traditional regression analysis in Minitab. ![]() A team responsible for projecting staffing and supplies wants to study whether they can make better predictions about the length of time a patient uses services based on information that they can collect about the patient when the patient enters the program. One of the services at the facility is an outpatient detoxification program where a regular course of treatment can last from 1 to 30 days. A healthcare provider operates a facility that provides substance abuse treatment services.
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