Table 2

 Excluded studies

ReferenceReason for exclusionResults
Laerum, 200445No dichotomous analysis of effect of high weight on asthmaContinuous outcome reported by 500 g from lowest baseline: OR 0.92 (0.62 to 1.35)
Gold, 200346Baseline was lowest quintileOverweight boys 1.04 (0.60 to 1.82) compared with lowest quintile; middle quintile was 1.01 compared with lowest quintile. Overweight girls 2.24 (1.14 to 4.40) compared with lowest quintile; middle quintile was 2.18 (1.07 to 4.44) compared with lowest quintile
Katz, 200347Baseline was lowest quintile0.92 (0.62 to 1.35) compared with lowest quintile of birth weight
Shaheen, 199948Birth weight as exposure was adjusted for adult BMIOR for effect of birth weight adjusted by BMI was 0.81 (0.55 to 1.18)