Table 2

Characteristics at baseline for the HEIA study intervention and control groups and by gender

Control (n=859)Intervention (n=465)p Value*Girls (n=643)Boys (n=681)
Age (years)11.2 (0.3)11.2 (0.3)0.5911.2 (0.3)11.2 (0.3)
Girls (% (n))48 (409)50 (234)0.35
Weight (kg)39.8 (7.8)39.5 (7.6)0.4640.2 (7.9)39.2 (7.6)
Height (cm)148.5 (6.8)148.6 (6.7)0.93149.0 (7.2)148.2 (6.4)
Puberty scale score (% (n))0.38
 Prepubertal21.5 (174)19.4 (85)9.4 (59)32.2 (200)
 Early pubertal35.9 (291)33.9 (149)19.4 (122)51.1 (318)
 Mid-late-postpubertal42.7 (346)46.7 (205)71.2 (447)16.7 (104)
Parental education (years) (% (n))0.10
 <1230.9 (259)26.7 (120)29.9 (188)28.9 (191)
 13–1636.2 (304)36.7 (165)33.0 (207)39.6 (262)
 >1632.9 (276)36.7 (165)37.1 (233)31.5 (208)
BMI (kg/m2)17.9 (2.6)17.8 (2.5)0.2918.0 (2.6)17.8 (2.6)
BMI z-score0.13 (1.08)0.06 (1.03)0.290.08 (1.01)0.13 (1.11)
Overweight/obesity† (% (n))14 (120)11 (50)0.1013 (85)12 (85)
Waist circumference (cm)63.3 (6.5)62.7 (6.1)0.1062.2 (6.2)63.9 (6.5)
Waist-to-height ratio (WTHR)0.43 (0.04)0.42 (0.04)0.060.42 (0.04)0.43 (0.04)
  • *Differences between intervention and control groups were tested by student t test/χ² test.

  • †As defined by the International Obesity Task Force's cut-offs for overweight/obesity at ages from 10.5 to 12.5 (weight status).

  • BMI, body mass index; HEIA, HEalth In Adolescents.