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Table 4 The definitions of the variables used in the logistic regression analyses

From: Exploring the tradeoff between data privacy and utility with a clinical data analysis use case

Variable names

Descriptions (encoding)

Sex

Sex of the patients (0 = Male, 1 = Female)

Age

Age of the patients in years (0 = < 60yrs, 1 = ≥ 60yrs)

Acuity level

Severity classification according to Korean Triage and Acuity Scale (KTAS) level (0 = Level 1, 1 = Others)

Number of consults

The number of consults (0 = < 3, 1 = ≥ 3)

Inter-hospital communication

Prior communication between medical staff at the time of transfer (0 = No, 1 = Yes)

Sending hospital location

Location of the sending hospital (0 = Inside seoul, 1 = Outside seoul)

High priority disease

Classification of high priority diseases included in the Korean High Priority Diseases Classification Standards (0 = No, 1 = Yes)

Neoplastic disease

Presence of neoplasm diseases (0 = No, 1 = Yes)

Circulatory disease

Presence of circulatory diseases (0 = No, 1 = Yes)

Respiratory disease

Presence of respiratory diseases (0 = No, 1 = Yes)

Sending hospital type

Type of the sending hospital according to patient’s length of stay (0 = Short-term care facility, 1 = Long-term care facility)

Injury-related visits

Reason/types for visiting the emergency room due to illness or injury (0 = Disease, 1 = Injury)

Treatment outcome

Whether additional plans were established for patient treatment results (0 = Discharge/ Against medical advice (AMA) discharge, 1 = Admission/Procedure/Operation/Transfer to other hospitals)

ED LOS

The length of stay at Emergency Department (0: LOS <= 6 h, 1: LOS > 6 h)