```Date: Mar 5, 2013 2:24 PM
Author: Richard Ulrich
Subject: Re: application of weights

On Mon, 4 Mar 2013 22:24:19 -0800 (PST), Usman Khan<usman.cs@gmail.com> wrote:>Question:>How should I apply the weights where I have a survey of households and>>- I am picking one child out of a household that has both parents living together...>>My data looks like this>>householdID	relationship_to_head	age	gender>1		Self			50	M>1		Wife			49	F>1		son			10	M>1		son			8	M>1		daughter		2	F>>2		Self			50	M>2		Wife			49	F>2		daughter		12	F	>>3		Self			50	M>3		Wife			49	F>3		son			15	M>>4		Self			50	M>4		Wife			49	F>>>Household Weights are>1	5>2	10>3	10>4	5>>>now if I were to look at the % Children in households with two parents, would it be>>	hh_1, hh_2, hh_3 / hh_1, hh_2,hh_3,hh_4	= 5+10+10 / 5+10+10+5>>The problem with the above solution is that the weights are for households and not for individual members. Is it fair to use weights in this case?>I don't know where you get your weights or why you want to use them.The only problem that I see with your formula, assuming you likethe weights, is that you have assigned a label that does notparse properly in English.  The fraction that you compute should be called something like,"Percent of households that have (one or more) children."  If you want to say something about "individual members"  ratherthan households, ... Are you referring to only children as "members"?    So, do you want to compute what your labelsays, "% children in households with two parents"  -- as a contrast to 0 or 1 parent?If so -- Your numerator will be a (weighted?) count of children, and the denominator denominator will be a (weighed?) countof households that do have one or more child.  In yourexample, that sum would omit household 4.-- Rich Ulrich
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