No, you don't need secure access to get information about children in the households. But note children under the age of 10 don't answer any questions themselves. 10-15 year olds answer some questions - see w_youth files. For 0-9 year olds, their parents answer questions about them such as their development, childcare arrangements etc.
w_indall files include all household members of responding households. So, it includes 0-9 year olds as well. You can get their age and sex information from this file. The identifiers of parents are also included in this file: fpid mpid w_fnpno w_mnpno w_mnspno w_mnspid w_fnspno w_fnspid. You can use these to attach information about the parents to that of the child.
Information about the children such as childcare arrangements, child development are available in separate files: w_child. In these files each row is for a child<16 years.
Information about the newborns are reported by their parents and this information is in the files w_newborn. In these files each row uniquely represents a parent-child combination, where pidp identifies the parent and then the w_newchno is the newborn number for that parent.
Please take a look at these files and the variables included in them.
Hope this helps. If you have further queries please let us know.
Best wishes,
Alita
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Updated by Victoria Nolan 
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