Physical Therapy Korea
pISSN 1225-8962 eISSN 2287-982X
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Survey variables used in machine learning

Survey classification Survey items
Health survey General information Sex, age
Education Academic background
Economic information Economic status, reasons for non-employment, employment form, position in the profession, occupation, the longest occupation
Quality of life Subjective health recognition, EQ-5D (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression)
Morbidity Affected disease in the last 2 weeks, morbidity by 38 chronic diseases
Activity restrictions Whether activity is restricted, reason for limiting activity
Smoking Lifelong smoking, currently smoking, past smoking, no smoking, second-hand smoke
Drinking Lifelong drinking, drinking start age, drinking frequency, alcohol consumption, binge drinking frequency
Physical activity Vigorous physical activity, moderate physical activity, walking practice, strength training, flexibility exercise
Mental health Sleep time, stress perception, depressive symptoms, suicide, mental problem counseling
Obesity and weight control Subjective body recognition, weight control, weight control
Examination survey Body measurement Height, weight, waist circumference
Blood pressure and pulse Systolic blood pressure, diastolic blood pressure, pulse rate
Respiratory examination Cough, phlegm, chest pain, difficulty breathing, fever
Phys. Ther. Korea 2021;28:177~185 https://doi.org/10.12674/ptk.2021.28.3.177
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