Table 1

Variables to be collected in the cross-sectional and nested case-control studies

Cross-sectional

Case-control


Allergy questions

Core asthma symptom questions (ISAAC phase II)

X

X

Core rhinitis symptom questions (ISAAC phase II)

X

X

Core eczema symptom questions (ISAAC phase II)

X

X

Supplementary asthma questions (ISAAC phase II)

X

Asthma management questions (ISAAC phase II)

X

Rhinitis management questions (ISAAC phase II)

X

Eczema management questions (ISAAC phase II)

X

Knowledge attitude practice questions (KAP)

X

Demographic and socio-economic

Sex

X

X

Age

X

X

Race

X

X

On socio-economic level:

parental schooling

X

parental occupation

X

X

domestic goods

X

X

monthly income

X

X

Environmental factors

Sanitation and water supply

X

X

Does the house have electricity?

X

X

Pets

Has the child ever had a cat or dog living in the house?

X

Does the child have a cat or dog living in the house currently?

X

X

Presence of animals outside household

X

X

Indoor smoking

X

X

Exposure to a farming environment

X

X

Housing (e.g. construction, number of rooms)

X

X

Presence of allergens in dust (mites and cockroach)

X

Presence of endotoxin in the house

X

Cooking materials

X

X

Maternal and family related factors

Maternal smoking during pregnancy

X

Asthma and other allergic diseases in the family

X

Breast-feeding duration

X

Vaccination (BCG, DTP, measles)

X

Whether attended day care (and for what period)

X

Number of people who live in each household

X

X

Number of siblings or children in the household

X

X

Birth order

X

X

Diet

Food frequency questionnaire

X

X

Consumption of unpasteurized milk

X

Migration

Place of birth of child

X

Place of birth of father

X

Place of birth of mother

X

Was the father brought up in an urban or rural area?

X

Was the mother brought up in an urban or rural area?

X

Period of time and places living outside place of birth during first 5 years of life

X

Details of relatives living in the city of Esmeraldas

X

Exercise/sedentarism

Number of hours of television watched daily

X

X

Frequency of vigorous exercise

X

X

Nutritional assessment

Hemoglobin

X

X

Height

X

X

Weight

X

X

Mid-upper arm circumference

X

Triceps skin fold thickness

X

Specific Infections

Intestinal helminth and protozoal infections (stool examinations)

X

X

A. lumbricoides IgE

X

IgG for Toxoplasma. Gondii, Helicobacter pylori and viral infections

X

Exercise test for exercise-induced bronchospasm

X

Atopy

Skin prick test

X

X

Total and specific IgE titres to house dust mite and American cockroach

X

Immunoregulatory cytokines

IL-10, IL-13, IFN-γ

X


Cooper et al. BMC Pulmonary Medicine 2006 6:24   doi:10.1186/1471-2466-6-24

Open Data