Table 3

Intervention effects of the HEIA study on anthropometric outcomes after 20 months; total sample and by gender and parental education

 Control (n=859)Intervention (n=465)p Value
Mean (95% CI)Mean (95% CI)
BMI, total sample18.9 (18.8 to 18.9)18.8 (18.7 to 18.9)0.501
Gender
 Girls19.2 (19.1 to 19.3)19.0 (18.8 to 19.3)0.024
 Boys18.5 (18.4 to 18.6)18.6 (18.5 to 18.7)0.306
Parental education
 Low19.3 (19.1 to 19.4)19.4 (19.2 to 19.7)0.189
 Medium18.7 (18.6, 18.8)18.7 (18.5 to 18.8)0.742
 High18.6 (18.5 to 18.8)18.4 (18.2 to 18.6)0.027
BMIz, total sample−0.01 (−0.04 to 0.02)−0.04 (−0.09 to 0.00)0.227
Gender
 Girls0.03 (−0.01 to 0.08)−0.8 (−0.14 to −0.02)0.003
 Boys−0.05 (−0.09 to −0.00)−0.01 (−0.07 to 0.05)0.322
WC, total sample66.2 (66.0 to 66.5)66.4 (66.0 to 66.7)0.502
Gender
 Girls66.0 (66.0 to 66.3)65.7 (65.3 to 66.1)0.279
 Boys66.4 (66.1 to 67.5)67.0 (66.5 to 67.5)0.089
WTHR, total sample0.416 (0.415 to 0.418)0.418 (0.415 to 0.420)0.412
Gender
 Girls0.414 (0.412 to 0.416)0.413 (0.416 to 0.421)0.344
 Boys0.419 (0.416 to 0.421)0.422 (0.419 to 0.425)0.089
Parental education
 Low0.420 (0.417 to 0.423)0.426 (0.422 to 0.430)0.020
 Medium0.417 (0.414 to 0.419)0.415 (0.412 to 0.419)0.484
 High0.413 (0.410 to 0.416)0.413 (0.410 to 0.416)0.978
  • Intervention effects determined by analysis of covariance adjusted for baseline value.

  • BMI, body mass index; BMIz, BMI-for-age z-score; HEIA, HEalth in Adolescents;WC, waist circumference; WTHR, waist-to-height-ratio. Bold signifies p<0.05.