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Table 2 Summarizes auxological data at birth and main developmental milestones

From: Early manifestations in a cohort of children prenatally diagnosed with 47,XYY. Role of multidisciplinary counseling for parental guidance and prevention of aggressive behavior

 

Mean value

Min. – Max.

Weight at birth (g)

3089

2030-4385

Length at birth (cm)

49,6

45-53

Occipital-frontal circumference at birth (cm)

34

32-36

Age at first words (months)

22

12-42

Age first walking (months)

13

10-17

Age at evaluation (months)

40

9-82