Table 3 Growth variables associated with percentage body fat at 7 years of age that were significant at the 10% level in the univariable analysis and variables that were significant in the multivariable model
Univariable(95% CI)Multivariable*(95% CI)
Birth weight (g)p = 0.03p<0.001
    <2500RefRef
    2500–29990.8 (−1.8 to 3.4)2.1 (−1.8 to 6.0)
    3000–34992.6 (0.4 to 4.8)5.3 (1.7 to 8.8)
    3500–39991.9 (−0.4 to 4.1)6.2 (2.6 to 9.8)
    ⩾40004.3 (1.3 to 7.2)8.8 (4.8 to 12.3)
Weight (SDS change/month)
    In first 9 monthsp = 0.02p<0.001
        Lowest quarterRefRef
        Second quarter0.4 (−1.6 to 2.3)1.4 (−0.6 to 3.4)
        Third quarter2.7 (0.2 to 5.2)4.3 (2.1 to 6.6)
        Highest quarter3.3 (0.9 to 5.7)7.1 (3.8 to 10.3)
    9 months–3.5 yearsp<0.001p<0.001
        Lowest quarterRefRef
        Second quarter1.3 (−1.1 to 3.6)1.5 (−1.1 to 4.1)
        Third quarter2.0 (−0.2 to 4.2)2.3 (−0.3 to 4.9)
        Highest quarter5.3 (2.7 to 7.8)6.4 (3.5 to 9.3)
    3.5–7 yearsp<0.001p<0.001
        Lowest quarterRefRef
        Second quarter0.4 (−1.8 to 2.6)1.4 (−0.7 to 3.6)
        Third quarter1.0 (−1.2 to 3.1)1.6 (−0.5 to 3.7)
        Highest quarter5.5 (3.0 to 8.0)6.1 (3.8 to 8.4)
    Height (SDS change/month)
    In first 9 monthsp = 0.14
        Lowest quarterRef
        Second quarter2.0 (−0.5 to 4.4)
        Third quarter2.5 (0.1,4.9)
        Highest quarter2.3 (−0.3 to 4.9)
    9 months–3.5 yearsp<0.001p = 0.007
        Lowest quarterRefRef
        Second quarter1.0 (−1.1 to 3.1)0.9 (−1.2 to 2.9)
        Third quarter3.6 (1.2 to 6.0)1.4 (−1.1 to 3.9)
        Highest quarter6.3 (3.6 to 8.9)4.7 (1.9 to 7.4)
    3.5–7 yearsp = 0.01
        Lowest quarterRef
        Second quarter−1.6 (−3.9 to 0.8)
        Third quarter−0.3 (−2.6 to 2.0)
        Highest quarter2.4 (0.1 to 4.7)
  • Estimates are the change in percentage body fat in comparison with the reference group. p Values are overall p values for an association. SDS, standard deviation score.

  • *Adjusted for gender, maternal body mass index, maternal age at pregnancy, TV hours per day and hours of sedentary activity.