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Re: Dropping of Observations [message #20101 is a reply to message #20099]

Fri, 25 September 2020 08:58

Bridgette-DHS
Messages: 3230
Registered: February 2013

Senior Member

Following is a response from DHS Research & Data Analysis Director, Tom Pullum:

There is very little you can do with birthweight (m19) in this survey. It is only provided for about 18% of births. The rest are "not weighed" or "don't know". The 18% that include a numerical value have a lot of heaping and questionable extreme values. About 15% of the numerical values are heaped right at 2500g. I would not have a lot of confidence in these numbers.

If you do proceed, I would recommend that initially you construct 5 categories, something like these: m19<2500; m19=2500; m19>2500 but <9996; m19=9996; and m19=9998. Then check for a statistical association between that categorical variable and neonatal or infant mortality.

The interpretation is probably affected by the fact that children for whom a birthweight is given are much more likely to have taken place in a facility, which gives a survival advantage, even if the child was LBW.

You should definitely not drop the LBW children and you do not need to modify the sampling weights.

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[Message index]

		Dropping of Observations By: shujaat.smc@gmail.com on Fri, 25 September 2020 07:58
		Re: Dropping of Observations By: Bridgette-DHS on Fri, 25 September 2020 08:58
		Survival Data Setting in Stata for Neonatal Mortality Determinants By: shujaat.smc@gmail.com on Sun, 27 September 2020 08:31

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