Table 2 Assignment of explanatory variables.

From: Prevalence and risk factors of pre-frailty and frailty in hemodialysis patients in central China

Variables

Description

Sex

Male = 1, Female = 2

Age

< 60 years = 1, ≥ 60 years = 2

Religion

Yes = 1, No = 2

Marry status

Married = 1, Single/Divorced/Widowed = 2

Education level

Elementary school and below = 1, Abover elementary school = 2

Monthly household income

≤ 3000 yuan = 1, > 3000 yuan = 2

Residential situation

With family = 1, Others = 2

With children

Yes = 1, No = 2

Smoking status

Smokers/quit smokers = 1, Never = 2

Drinking status

Drinkers/quit drinkers = 1, Never = 2

Employment

Yes = 1, No = 2

Falls

Yes = 1, No = 2

Dialysis duration

< 5 years = 1, ≥5years = 2

Exercise

No = 1, Yes = 2

Dialysis frequency

Twice a week = 1, Three times a week = 2, Five times two weeks = 3

Vascular access

Arteriovenous fistula = 1, Artificial blood vessels = 2, Central venous catheter = 3

Hypertension

Yes = 1, No = 2

Diabetes

Yes = 1, No = 2

Heart disease

Yes = 1, No = 2

Cerebral disease

Yes = 1, No = 2

Other diseases

Yes = 1, No = 2

Frailty grades

Robust= 0, Pre-frailty= 1, Frailty= 2