WALKAGEWK
Age child first walked 2 steps alone: Weeks old
WALKAGEWK is a 3-digit-numeric variable.
0: Not in Universe
996: Never walked alone
998: Unknown whether walked alone
999: Unknown when walked alone
For sample persons under 5 years old, WALKAGEWK reports the age (in weeks) at which the child first walked at least 2 steps without holding on to anything or another person.
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