I am studying how wealth affects child malnutrition in Rwanda with time. For that, I would like to calculate the Comparative Wealth Index for Rwanda for the years 1992, 2000, 2005 and 2010 (basically all available Rwanda DHS surveys).

Does anyone have the required Alpha and Beta values for these surveys?

Would greatly appreciate that as this information is vital for my PhD dissertation.

Thanks!]]>

Thank you for your post.]]>

Sorry to bother you again about the same issue. I used the values you sent me for Rwanda to calculate the CWI and compared the mean and std to the ones in table 3.1 in that following report http://dhsprogram.com/pubs/pdf/MR9/MR9.pdf.

Are the ones you sent me new updated alpha and beta scores or were they similar to the ones used in the report?

Specifically, I got this for 1992

Variable | Obs Mean Std. Dev. Min Max

-------------+---------------------------------------------- ----------

CWI | 6252 -1.00086 .3508722 -1.293119 1.913442

for 2000

Variable | Obs Mean Std. Dev. Min Max

-------------+---------------------------------------------- ----------

CWI | 9696 -1.176227 .7187736 -1.606931 3.206589

for 2005

Variable | Obs Mean Std. Dev. Min Max

-------------+---------------------------------------------- ----------

CWI | 10272 -9.14e-06 .5081679 -.2533463 4.451288

and for 2010

Variable | Obs Mean Std. Dev. Min Max

-------------+---------------------------------------------- ----------

CWI | 12540 -.0001001 .46742 -.787876 3.969633

whereas in table 3.1 they are different for all four cases.

Thank you again for your help!]]>

Quote:

The CWI is used to compare across surveys. There is no need to use it to compare regions. Since the transformation is constant within a survey, no difference in the concentration index should be observed (to the level of rounding).

If this does not answer your question, please post again.]]>

Thank you for checking with the experts. However my question was why using the alpha and beta values you sent me in the excel sheet for Rwanda (1992, 2000, 2005 and 2010) gives different results for CWI than those in table 3.1 in the report in the following link http://www.dhsprogram.com/pubs/pdf/MR9/MR9.pdf for the same surveys.

For 2005 for example, using the values you sent me for alpha and beta, the mean for CWI is almost 0 whereas in table 3.1 the mean for CWI is -0.965 etc.. (standard deviations are also different as you can see from the tables I pasted in the previous message below, if you compared with table 3.1)

I hope I clarified my point, if not please let me know and I will attach files that detail the explanation more..

Thanks again for your assistance! ]]>

Thank you for checking with the experts. However my question was why using the alpha and beta values you sent me in the excel sheet for Rwanda (1992, 2000, 2005 and 2010) gives different results for CWI than those in table 3.1 in the report in the following link http://www.dhsprogram.com/pubs/pdf/MR9/MR9.pdf for the same surveys.

For 2005 for example, using the values you sent me for alpha and beta, the mean for CWI is almost 0 whereas in table 3.1 the mean for CWI is -0.965 etc.. (standard deviations are also different as you can see from the tables I pasted in the previous message below, if you compared with table 3.1)

I hope I clarified my point, if not please let me know and I will attach files that detail the explanation more..

Thanks again for your assistance! ]]>

Quote:

Since the DHS Wealth Index has a mean of zero by construction, applying the constant would give a mean of -0.932 for the CWI, not zero! The beta term just expands or reduces the dispersion (equally) so it doesn't change the mean. Has the user reversed the coefficients? Has s/he applied weights (should not for evaluating the mean)? Subset the data?]]>

Thanks a lot for the update! It helped me figure out the mistake I did in the calculations.

Sorry for the inconvenience!]]>

Thanks!]]>

is it possible to obtain an updated list of CWI coefficients also containing more recent surveys?

Thanks!

]]>

I was hoping someone could say is this coefficient list has been updated and put online?

Thank you in advance,

Gary]]>

I'm interested in this as well. Thank you!Hello all,cutfullprice

I was hoping someone could say is thislist has been updated and put online?

Thank you in advance,

Gary

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