Table 2 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
n (%)Univariable(95% CI)Multivariable(95% CI)
Genderp = 0.03p = 0.005
    Male287 (48.6)RefRef
    Female304 (51.4)1.8 (0.2 to 3.4)2.4 (0.7 to 4.0)
Socio-economic status at birthp = 0.10
    High406 (68.7)Ref
    Middle156 (26.4)−1.2 (−3.1 to 0.7)
    Low29 (4.9)4.6 (−0.9 to 10.1)
Maternal BMIp = 0.005p = 0.001
    <25445 (76.6)RefRef
    25–3099 (17.0)3.0 (0.9 to 5.1)3.7 (1.4 to 6.0)
    >3037 (6.4)4.0 (−0.1 to 8.1)4.0 (0.4 to 7.7)
Hypertension in pregnancyp = 0.06
    No547 (93.8)Ref
    Yes36 (6.2)−3.0 (−6.2 to 0.1)
Maternal age at birth of childp = 0.06p = 0.01
    <2558 (9.9)RefRef
    25–29137 (23.5)0.8 (−1.9 to 3.5)−0.8 (−3.9 to 2.3)
    30−34231 (39.6)2.6 (0.1 to 5.2)2.5 (−0.2 to 5.3)
    35+158 (27.1)2.8 (0.1 to 5.6)1.4 (−1.7 to 4.4)
TV hours watched per dayp = 0.003p = 0.004
    <1150 (25.4)RefRef
    1–3378 (64.1)2.3 (0.8 to 3.9)2.5 (0.7 to 4.2)
    >362 (10.5)4.9 (1.0 to 8.8)5.2 (1.2 to 9.1)
Sedentary activity (per hour)5171.0 (0.4 to 1.6)0.8 (0.2 to 1.4)
Moderate activity (per hour)517−0.4 (−1.4 to 0.5)
Vigorous activity (per hour)517−2.3 (−4.3 to −0.3)
  • Estimates are the change in percentage body fat in comparison to the reference group. p Values are overall p values for an association. BMI, body mass index.