Length of service data

A healthcare provider operates a facility that provides substance abuse treatment services. 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 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. These variables include demographic information and variables about the patient's substance abuse.

You can use this data to demonstrate CART^® Regression.

The second data set includes a small number of new data points for the same variables. You can use this data set to demonstrate Predict for CART^® Regression.

Worksheet column	Description
Age at Admission	The age of the patient at admission
Age of First Drug Use	The age of the patient at first drug use
Arrests in Previous 30 Days	The number of arrests in the 30 days prior to admission
Days Waiting for Service	The number of days the patient waits to enter treatment
Previous Treatment Episodes	The number of prior admissions
Years of Education	The number of years of education
Other Stimulant Use	Did the patient report other stimulant usage: 0 or 1
Planned Medication Therapy	Does the patient have a plan for medication therapy: 1 or 2
Psychiatric Condition	Does the patient have a psychiatric condition: 1 or 2
Pregnant	Is the patient pregnant at admission: 1 or 2
Gender	Biological sex of the patient: 1 or 2
Veteran	Veteran status of the patient: 1 or 2
Alcohol Use	Did the patient report alcohol usage: 0 or 1
Cocaine Use	Did the patient report cocaine usage: 0 or 1
Marijuana Use	Did the patient report marijuana usage: 0 or 1
Heroin Use	Did the patient report heroin usage: 0 or 1
Other Opioid Use	Did the patient report other opioid usage: 0 or 1
PCP Use	Did the patient report PCP usage: 0 or 1
Methadone Use	Did the patient report methadone usage: 0 or 1
Other Hallucinogen Use	Did the patient report other hallucinogen usage: 0 or 1
Methamphetamine Use	Did the patient report methamphetamine usage: 0 or 1
Other Amphetamine Use	Did the patient report other amphetamine usage: 0 or 1
Benzodiazepine Use	Did the patient report benzodiazepine usage: 0 or 1
Other Tranquilizer Use	Did the patient report other tranquilizer usage: 0 or 1
Barbituate Use	Did the patient report barbiturate usage: 0 or 1
Other Sedative Use	Did the patient report other sedative usage: 0 or 1
Inhalant Use	Did the patient report inhalant usage: 0 or 1
Non-Prescription Drug Use	Did the patient report non-prescription drug usage: 0 or 1
Other Drug Use	Did the patient report other drug usage: 0 or 1
Intravenous Drug Use	Did the patient report intravenous drug usage: 0 or 1
Living Arrangements	The living arrangements of the patient: 1, 2, or 3
Frequency of Substance Abuse	The frequency of substance abuse of the patient: 1, 2, or 3
Health Insurance	The type of health insurance of the patient: 1, 2, 3, or 4
Marital Status	The marital status of the patient: 1, 2, 3, or 4
Ethnicity	The ethnicity of the patient: 1, 2, 3, 4, or 5
Income Source	The income source of the patient: 1, 2, 3, 4, or 5
Primary Ingestion Route of Sub	The primary ingestion method of the patient: 1, 2, 3, 4, or 5
Self-Help Attendance	The self-help attendance of the patient: 1, 2, 3, 4, or 5
Source of Payment	The source of payment for the treatment: 1–6
Race	The race of the patient: 1–9
Employment Status	The employment status of the patient: 1–3, 100, 200, 300, 400, or 500
Referral Source	The referral source of the patient: 1–6, 100, 200, 300, 400, 500, 600, 700, 800
Primary Substance of Abuse	The primary substance of abuse of the patient: 2-7, 10, 11, 13, 15, 16, and 19
DSM Diagnosis	The diagnosis code of the patient: 1–12, 16, and 19
Length of Service	The number of days the patient is in treatment
Fold	The fold identifiers for cross-validation

Download LengthOfService.MTW

Download LengthOfServicePredictions.MTW