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Table 1 Description of variables

From: Identification of clinical factors related to prediction of alcohol use disorder from electronic health records using feature selection methods

Variable

Description

Data type

Feature range

AUD Status

Either positive or negative. They are the target values as well. It is considered as class label

Binary

–

AUD-Positive = 1

AUD-Negative = 0

Gender

Male or female

Categorical

(f1, f2)

Age

Age of patient at time of Relay study

Numerical

(f3)

Admission Type

Admitted patients or outpatients

Categorical

(f4, f5)

Length of Stay

The amount of time the patient spent at the hospital for each visit

Numerical

(f6)

ED

If the patient visited the emergency department prior to admission

Binary

(f7, f8)

ICU

If the patient was transferred to the ICU

Binary

(f9, f10)

Action Diagnosis

Reason why patients visited the hospital, scored according to the Danish version of ICD10 codes

Categorical

(f11, f12, … f361)