st: how to create a dummy with information across rows

[ana mylena aguilar <anamylena@gmail.com>]

Hello
I have a datatset with information by households ( rows) and
individual household members in the columns.Household size can go all
the way until 25. Therefore, the format for x number of variables is
for example age1..age25.I reshaped the dataset to have household
members within each household in each row as below. However, I need to
contruct a variable that require using infomation across rows.
hh roster line age     rel with hh head            child's mother line
(only <14 years old)
1     1              35       household head
missing
1     2              15        daughter                                  missing
1     3              10        daughter                                  1
1     4               1         grandson                                 2
I need to create a dummy variable to identify a teen mother in the
household. In this case, there is one (line 2). The household is
formed by a mother, two daughters ( age 15 and 10) and a grandson. The
older daughter has a 1 year old child. Every child under 14 has
information on who is his/her biological mother ( roster line of the
mother). But I would like to link the information of the chidl with
the young mother.   Do I need to re-reshape or a loop would work?

Any help would be great, thanks
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