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Table 4 BMI and energy intake in the groups of evolution of risk of ED according to the Val66Met (G196A) genotypes

From: BDNF Val66Met polymorphism, energy intake and BMI: a follow-up study in schoolchildren at risk of eating disorders

    BMI (kg/m2) Energy intake (Kcal/day)
   n Preadolescence
Median(IQR)
Adolescence
Median(IQR)
p-value Preadolescence
Median(IQR)
Adolescence
Median(IQR)
p-value
No→No V/V 36 18.4(4.2) 20.5(5) <0.001 2357(717) 2659(1340) 0.102
  V/M + M/M 21 18.4(4.3) 21(6) <0.001 2418(682) 2448(871) 0.274
Yes→No V/V 41 19.4(5.4) 21.3(6) <0.001 2300(689) 2311(1102) 0.750
  V/M + M/M 20 20.7(5.4) 20.9(5) 0.02 2623(761) 2477(861) 0.277
No→Yes V/V 4 18.4(3) 22.1(2) 0.043 2120(1522) 2127(541) 0.686
  V/M + M/M 6 20.4(4.7) 22.6(6) 0.028 2431(870) 1794(650) 0.075
Yes→Yes V/V 31 22.9(5.3) 24.7(8) 0.001 2034(670) 1762(1137) 0.387
  V/M + M/M 11 22.9(4.6) 24.6(5) 0.016 2270(771) 1763(490) 0.033
  1. IQR: Interqualtin range; No→No: no risk of ED in either preadolescence or adolescence; Yes→No: risk in preadolescence but no risk in adolescence;
  2. No→Yes: no risk in preadolescence but risk in adolescence; Yes→Yes: risk in both preadolescence and adolescence; V/V: Val/Val; V/M: Val/Met;
  3. M/M: Met/Met. No significant differences between V/V and V/M + M/M genotypes in either group
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