Table 1

Characteristics of study population1-150

Sex (boys)3630/7370; 49.3%
Ethnicity
 Non-Hispanic white1938/7370; 26.3%
 Non-Hispanic black2504/7370; 34.0%
 Mexican-American2577/7370; 35.0%
 Other351/7370; 4.8%
Mean (SD), (range) BMI18.5 (4.2), (7.3–37.2)
Asthma ever668/7368; 9.1%
Still asthma463/7345; 6.3%
Treated for asthma636/7365; 8.6%
Wheeze1182/7369; 16.0%
Atopy1-1 2480/4742; 52.3%
Passive smoke exposure2946/7364; 40.0%
Birth weight (g)1-2
 <2500 471/5169; 9.1%
 2500–41004325/5169; 83.7%
 >4100 373/5169; 7.2%
Ever breast fed1-3 944/2137; 44.2%
  • Data expressed as n/N (%) except for BMI which is expressed as a ratio calculated as kg/m2.

  • 1-1 Information only availabe on subjects aged 6–17 years.

  • 1-2 Information only availabe on subjects aged 4–12 years.

  • 1-3 Information only availabe on subjects aged 4–6 years,

  • 1-150 A complete data set was not available for every subject.