Table 2 Variable definition and sample means

Log income

Log annual household income

10.305

10.238

Age

Age

45.942

46.554

Marital status

Married or cohabiting

0.513

0.487

Urban area

Degree of urbanization

3.020

3.010

Have you ever had:

Stroke

A celebral haemorrhage, celebral infarct or stroke

0.005

0.002

Heart attack

A heart attack

0.005

0.001

Cancer

Have you ever had cancer

0.014

0.013

Any diseases

Have had stroke heart attack or cancer

0.023

0.016

Did you during the past 12 months have:

Heart problems

Heart problems

0.021

0.018

Migraine

Migraine or severe headache

0.082

0.193

Diabetes

Diabetes

0.042

0.035

High blood pressure

High blood pressure

0.108

0.141

Stricture of blood vessels

Stricture of blood vessels in belly or legs

0.023

0.020

Asthma, bronchitis

Asthma, chronic bronchitis, pulmonary emphysema, or CARA

0.071

0.073

Psoriasis

Psoriasis

0.024

0.017

Chronic eczema

Chronic eczema

0.036

0.042

Dizziness with falling

Dizziness with falling

0.020

0.034

Serious intestine problems

Severe or persistent intestine problems for more than 3 months

0.019

0.040

Involuntary incontinence

Involuntary incontinence

0.015

0.077

Serious back problems

Severe or persistent back problems

0.104

0.116

Wear out of the joints

Chronic wear out of joints

0.091

0.148

Arthritis

Arthritis

0.032

0.069

Problems with neck or shoulder

Condition of neck or shoulder

0.078

0.130

Problems elbow, wrist or hand

Condition of elbow, wrist or hand

0.052

0.083

Other long term disease

Other long term disease or condition

0.080

0.105

Any disease

Any of the diseases listed above during the past 12 months

0.469

0.589

Did you during the past 2 months have:

Cold or influenza

A cold, influenza, etc.

0.382

0.412

Acute bronchitis

Acute bronchitis or pneumonia

0.018

0.021

Ear infection

Ear infection

0.027

0.026

Infection kidney or bladder

Infection of kidney or bladder

0.016

0.044

Diarrhea

Diarrhea

0.101

0.115

Vomiting

Vomiting

0.025

0.041

Ulcer

Ulcer

0.012

0.013

Any disease

Any of the diseases listed above during the past 2 months

0.462

0.504