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Table 2 Variables already collected and variables to be collected in the current survey

From: Risk factors and immunological pathways for asthma and other allergic diseases in children: background and methodology of a longitudinal study in a large urban center in Northeastern Brazil (Salvador-SCAALA study)

Study variables

Origin of the data

 

Previous baseline surveys and follow-up

Present survey 2005–20061

Demographic and socio-economic

  

Sex

X

 

Birth date

X

X

Race/skin color

X

 

On socio-economic condition:

  

   • parental schooling

X

X

   • domestic goods

X

X

Environmental factors

  

Sanitation and water supply

X

X

Presence of pets

 

X

Indoor smoking

 

X

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

X

X

Presence of allergens in dust (mites and cockroach)

 

X

Presence of endotoxin and mould in the house

 

X

Whether the house is located in an area of intense car traffic

 

X

Psycho-social factors

  

domestic violence

 

X

Experience of discrimination

 

X

Resilience

 

X

Maternal and family related factors

  

Maternal smoking during pregnancy

X

X

Asthma and other allergic diseases in the family

 

X

Number of pregnancies

X

X

Child health

  

Prenatal Care

X

X

Weight at birth

X

 

Breast-feeding duration

X

X

Vaccination (BCG, DTP, measles)

X

X

Whether attended kindergarten

X

X

Number of people who live in each household

 

X

Nutritional status

X

X

Global health status, as evaluated by the guardian

X

 

Diarrhoea longitudinal prevalence

X

 

Cough longitudinal prevalence

X

 

Short of breath longitudinal prevalence

X

 

Fever longitudinal prevalence

X

 

Other infections (pneumonia, otites, causes for hospitalisations)

X

X

Use of antibiotics

X

X

Specific Infections

  

Intestinal helminth and parasitic infections (stool examinations)

X

X

Serologic test to A. lumbricoides, T. trichura, Toxopalsma. gondii, Toxocara canis, hepatitis A and other virus

 

X

Atopy

  

Skin prick test

 

X

Total and specific IgE titres to most important allergens

 

X

Antibody to mites and cockroach

 

X

Immunological makers

  

IL-10, IL-13, TGF-β, IFN-Gamma

 

X

  1. Note: the same data are planned to be collected in a survey scheduled to 2008.