Table 4. Summary of the results of the analyses and the interpretation per age interval based on criteria a, b and c.

Age interval	Criterion a. Relation with adult overweight according to Students t tests	Criterion b. Significance of ZT1 as predictor in addition to the significance of ZT2 as predictor in a multiple linear regression analyses	Criterion c. High correlation of BMI SDS at a certain age with BMI SDS at adulthood at the end of the period	Critical age interval based on results of analyses concerning criteria a, b and c.	Confirmation of other study results [reference(s)]
0–8 d	NS	NS	no	no	no [9]
8 d-4 m	NS	yes**	no	no	no [9], [10], [17]
4 m-1 y	yes*	NS	no	no	partly, concerning results of t-tests [10]
1–2 y	NS	yes*	no	no	yes [17]
2–6 y	yes**	yes**	yes**	yes	yes [5], [15], [21]
6–10 y	yes**	NS	yes**	yo	possibly, not validated yet [16]
10–18 y	yes**	yes**	yes**	yes	yes [25]

NS not statistically significant (p>0.05),

*P = 0.001,

**P<0.001.