# HHWT or PERWT for Derived Families

**URL:** <https://forum.ipums.org/t/hhwt-or-perwt-for-derived-families/510>\
**Category:** USA\
**Created:** [April 29, 2014, 2:44am UTC](https://forum.ipums.org/t/hhwt-or-perwt-for-derived-families/510 "2014-04-29T02:44:00Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![BBett](https://avatars.discourse-cdn.com/v4/letter/b/97f17d/32.png) [@BBett](https://forum.ipums.org/u/BBett)\
**Post date:** [April 29, 2014, 2:44am UTC](https://forum.ipums.org/t/hhwt-or-perwt-for-derived-families/510/1 "2014-04-29T02:44:00Z")

</div>

I am doing a parity analysis, so I’m looking at counts of newborn babies, divided up depending on previous births to that mother (in the household). For example, how many babies were born to a mother that already has one son? one daughter? A son then a daughter? etc.

So while I am counting the individuals, they’ve been formed into family units that might be more similar to households.

I am using the 2007-2011 ACS 1-year data.

In this case should I be using the baby’s weight, the mother’s or the households?

---

_[View the full topic](https://forum.ipums.org/t/hhwt-or-perwt-for-derived-families/510)._