Table 3 Operationalization of variables

Sex

Biological condition at birth

Nominal qualitative

1. Man

2. Woman

Age

Age in years

Quantitative

Age in years

Social security system

Membership social security system

Nominal qualitative

1. Contributory

2. Subsidized

Scholarship

Schooling

Qualitative ordinal

1. No studies

2. Primary

3. High School

4. College undergraduate

5. University postgraduate degree

Weight

Patient weight

Quantitative

Weight in Kg

Height

Patient height

Quantitative

Height in cm

Allergies

Allergic antecedents

Nominal qualitative

1. Yes

2. No

To have caregiver

Family or friend who accompanies during hospitalization

Nominal qualitative

1. Yes

2. No

Diagnosis of admission

Admission diagnosis

Nominal qualitative

–

Hospitalization 6 months before

Hospitalization 6 months before

Nominal qualitative

1. Yes

2. No

Number of services received

Specialties that are treating the patient

Quantitative

Count

Previous stay in intensive care unit

Previous stay in intensive care unit

Nominal qualitative

1. Yes

2. No

Adverse drug reaction

Adverse drug reaction

Nominal qualitative

1. Yes

2. No

Colonized patient

Patient isolated unit because a multi-resistant bacterium colonizes him

Nominal qualitative

1. Yes

2. No

Hospital stay length

Hospitalization days

Quantitative

Count

Number of medications

Number of drugs prescribed

Quantitative

Count