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Table 1 Description of the dependent and independent variables

From: Factors associated with self-rated health in a Norwegian population of older people participating in a preventive home visit program: a cross-sectional study

Dependent variables

Variable

Instrument/question

Response options

Use in the analysis

Self-rated health

SF 36. Item 1.

How do you rate your health?

Poor health = 1

Fair = 2

Good = 3

Very good = 4

Excellent = 5

Continuous

Self-rated health

SF 36. Item 1.

How do you rate your health?

Poor health = 1

Fair = 2

Good = 3

Very good = 4

Excellent = 5

Dichotomized

Poor = 0

(fair, poor)

Good = 1

(good, very good, excellent)

Independent variable

Variable

Instrument/question

Response options

Use in the analysis

Demographics

 Age

What is your birth date?

Years

Continuous

 Gender

Which gender are you?

Male = 0

Female = 1

Dichotomous

 Education

Which education do you have?

≤7 years elementary school

Middle school

Secondary school

High school

Folk high school

Craftsman education

Trade school

University

Other

Dichotomized

No college = 0

(≤7 years, elementary school, middle school, secondary school, high school, folk high school, craftsman education, other)

College = 1

(trade school, high school, university)

Municipality

In which municipality you live?

Large municipality =1

Medium municipality = 3

Small village =2

Categorical

Marital status

What is your marital status?

Married

Cohabitant

Alone

Divorced

Widow(er)

Dichotomized

Single = 0

(alone, divorced, widow/er)

Partner = 1

(married, cohabitant)

Living alone

Do you live alone?

Yes = 0

No = 1

Dichotomous

Residential

Is the residential:

Hired = 0

Owned/Private = 1

Dichotomous

Improvements in house

Is it necessary to do improvement in your house?

Yes = 0

No = 1

Dichotomous

Lifestyle

 Social support

OSLO 3 – SSS

 

Continuous

1. How many people are standing so close that you can count on them if you have big personal problems

No one (1 p)

1 to 2 (2 p)

3 to 5 (3 p)

6 or more (4 p)

2. How interested are people for what you do?

No participation or interest (1p)

Little participation and interest (2p)

Unsure (3 p)

Some participation and interest (4 p)

Great participation and interest (5 p)

3. How easy is it to get practical help from neighbours if you need it?

Very difficult (1p)

Difficult (p)

Possible (3p)

Ease (4p)

Very easy (5 p)

3–8 p = Lack of support

9–11 p = Some support

12–14 p = Much support

 Exercise

How often do you exercise? (minimum 30 min duration so that you are warm and slightly out of breath)

Rare = 1

1–3 times a month = 2

1–3 times a week = 3

4–6 times a week = 4

Daily = 5

Continuous

 Smoking

Do you smoke?

Yes

No

No, but smoked earlier

Dichotomized

Smoking = 0

No smoking = 1

(no; no, but smoked earlier)

 Use alcohol

Do you use alcohol?

Yes = 0

No = 1

Dichotomous

 External activities

How often are you away from home?

Rare = 1

1–3 times a week = 2

4–6 times a week = 3

Daily = 4

Several times a day = 5

Continuous

 Have mobile phone

Do you have a mobile phone?

No = 0

Yes = 1

Dichotomous

 Use Internet

Do you use Internet?

No = 0

Yes = 1

Dichotomous

 Have a hobby

Do you have a hobby?

No = 0

Yes = 1

Dichotomous

 Participate in a club/social organized activity

How often do you participate in a club/social organized activity?

Never = 1

Seldom = 2

1–3 a month = 3

1–3 a week = 4

4–6 a week = 5

Daily = 6

Continuous

Health conditions

 Vision (Two different question used in different questionnaire)

How would you describe you vision?

Downton fall risk index (only visions impairment)

Visually impaired

Reduced

Somewhat impaired

Good

Excellent

If the person has vision impairment, drew a circle around 1.

Dichotomized

Reduced = 0

(somewhat impaired, reduced, visually impaired)

Good = 1

(excellent and good)

 Hearing

How would you describe you hearing?

Hearing impaired = 1

Reduced = 2

Somewhat impaired = 3

Good = 4

Excellent = 5

Continuous

 Sleep problems

Do you have sleep problems?

Yes = 0

No = 1

Dichotomous

 Pain

Do you have pain?

Yes = 0

No = 1

Dichotomous

 Life orientation

a. Are you satisfied with your life?

b. Do you feel someone need you?

c. Do you have plans for the future?

d. Do you have zest for life?

e. Do you feel lonely?

f. Do you feel depressed/sad

a. - d:

Yes/No

e. – f:

Rarely or never/sometimes/often or always

“Yes” rated at questions a – d and “Rarely or never” at questions e and f = Positive life orientation

Dichotomous

Negative = 0

Positive = 1

 Home care service

Do you have public help at home?

No

Home Care

Home help

Food delivery

Drugs or medications

Dichotomized

Yes = 0

(home care/home help/food delivery/drugs or medications)

No = 1

(no)

 Limited by disease

Does the disease affect you in everyday life?

Completely = 1

Very much = 2

Often = 3

Sometimes = 4

Not at all = 5

Continuous

Medical diagnoses

 Stroke

Have you had a stroke?

Yes = 0

No = 1

Dichotomous

 Heart failure

Do you have heart failure

Yes = 0

No = 1

Dichotomous

 COPD

Do you have COPD

Yes = 0

No = 1

Dichotomous

 Cancer

Do you have cancer

Yes = 0

No = 1

Dichotomous

 Depression

Do you have depression?

Yes = 0

No = 1

Dichotomous

 Anxiety

Do you have anxiety?

Yes = 0

No = 1

Dichotomous

 Osteoporosis

Do you have osteoporosis?

Yes = 0

No = 1

Dichotomous

 Arthrosis

Do you have arthroses?

Yes = 0

No = 1

Dichotomous