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Wealth Index - Uganda 2000 [message #11196] Thu, 17 November 2016 07:38 Go to previous message
fewerling is currently offline  fewerling
Messages: 19
Registered: November 2016
Location: Brazil
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Dear all,

We are trying to reproduce the results for skilled birth attendance (doctor, nurse/midwife, clinical officer, private nursing aid) by wealth quintiles in Uganda 2000 (Table 9.7).

However, using v190, the wealth quintiles provided with the survey, the coverage distribution does not match the published estimate.

Using the doctor attendance as example, the published estimates are:

Wealth index quintile
Lowest 1.6
Lower middle 1.9
Middle 2.1
Upper middle 3.3
Highest 12.4

Using the sample weights and the codes below, we found:
. svyset v021 [pweight=v005]
. svy:prop m3a, over(v190)

Wealth index quintile
Lowest 3.7
Lower middle 9.2
Middle 2.6
Upper middle 2.6
Highest 3.0

The national estimate matches the published. Our only problem is with the wealth index. We also tried to re-calculate the wealth quintiles using the continuous wealth scores (v191):
xtile wealth=v191 [pweight=v005], nq(5)
ta wealth v190

5 |
quantiles | wealth index quintile
of v191 | lowest 20 next to l middle 20 next to h highest 2 | Total
-----------+------------------------------------------------ -------+----------
1 | 1,310 0 0 0 0 | 1,310
2 | 53 1,034 503 0 0 | 1,590
3 | 0 0 758 708 0 | 1,466
4 | 0 0 0 636 715 | 1,351
5 | 0 0 0 0 1,396 | 1,396
-----------+------------------------------------------------ -------+----------
Total | 1,363 1,034 1,261 1,344 2,111 | 7,113

The quintiles provided do not match the calculated ones, however, with the calculated quintiles we still could not reproduce the report results.

We are using the dataset version 41. Is it possible that the results were calculated in the older version, and that the updated one have a problem with the provided wealth index?
If not, how should we proceed?

Thank you in advance!
 
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