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Table 1 Data collection schedule, Urban Environment and Childhood Asthma (URECA) Study.

From: The Urban Environment and Childhood Asthma (URECA) birth cohort study: design, methods, and study population

    Ongoing Visits Clinic Visits (number represents child's age in months)
  Pre 3 QC HV 12 24 33 36 48 60 72 81 84
General Questionnaires              
   Screening and Eligibility – Mother x             
   Contact Information x x x   x x x x x x X x x
   Demographics x     x x   x x x X   x
   Socioeconomic status x     x x   x   x    x
Mother's Health Questionnaires              
   Respiratory and Allergy History x x            
   Smoking History and Alcohol Use x             
Child's Health Questionnaires              
   Respiratory and Allergy Symptoms   x x   x x x x x x X x x
   Child's Sleep Questionnaire      x x   x x x X   x
   Medications   x x   x x x x x x X x x
   Diet   x x   x x x x x x X x x
   Respiratory Illness Score Card As often as illness is reported
Stress Assessment Questionnaires              
   Pregnancy Anxiety Scale x             
   Edinburgh Postnatal Depression x x    x x   x   x    x
   Perceived Stress Scale x x x   x x x x x x X x x
   Difficult Life Circumstances x     x x   x   x    x
   Neighborhood/Block Conditions x     x x   x      
   Neighborhood Violence x     x x   x   x    x
   Housing Stress x     x x   x   x    x
   Brief COPE x     x x   x      
   Social Supports/Networks x     x x   x      
Study Procedures              
   Cord blood sample (at birth)              
   Maternal blood sample      x         
   Child blood sample      x x   x x x X x  
   Eczema Area and Severity Index   x    x x   x x x X   x
   Physical examination      x x   x x x X   x
   Nasal lavage sample*      x    x   x    x
   Allergen skin testing        x    x    x
   Spirometry and IOS         x   x X   x
   Bronchodilator Reversibility           x X   x
   Methacholine Challenge             x  
   Lung Volume (Plethysmography)             x  
   Exhaled Nitric Oxide           x X x  
   Bioelectrical impedance analysis      x x   x x x X   x
Home Environment Assessment              
   Household Smoking   x x   x x x x x x X   x
   Home Environment Questionnaire   x    x x   x x x X   x
   Home Environment Observation     x          
   Dust sample collection   x   x          
   Airborne nicotine and NO2   x   x          
  1. Notes: PN = Prenatal Visit; 3 = 3-month Home Visit; QC = Quarterly Calls (occurring at 6, 9, 15, 18, 21, 27, 30, 39, 42, 45, 51, 54, 57, 63, 66, 69, 75, 78, and 81 months); HV = Home Visits (occurring once between each yearly clinic visit, except after age 5).
  2. *Also collected during respiratory illnesses
  3. Collected at 3 months, and at age 4, 5 and 6. At age 5, the collection will occur in the opposite season from the age 4 sample.