I am in need of help with the following:

I require to (I) identify siblings that are (II) below 1 years of age, for each child (row). The constructed variable should indicate per child how many siblings below 1 year of age he/she has (0,1,2,3,etc).

What procedure/operations will work?

Thank you so much!

/N

]]>

Please do not post the same question twice--but maybe you thought the first time didn't work?

You are talking about pairs of siblings. One of them should be below age 1. What about the other one? Or should they both be below age 1? What do you mean by "0,1,2,3..."? Hardly any children age 0 have a sibling age 0, and almost all pairs of children in which BOTH are age 0 will be twins. I don't think any surveys will have enough pairs of twins age 0 for any statistical analysis. Or are you talking about a reference child of any age, paired with a sibling age 0?

We can provide Stata code to construct sibships or pairs of siblings, where siblings are defined to be children with the same mother (not necessarily the same father). Is Stata the programming language you are using?

]]>