| Dropping observations/weights [message #11891] |
Sat, 25 February 2017 19:39  |
catherino222
Messages: 4
Registered: February 2017
Location: London ON
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Hello,
I am new to STATA and DHS. I'm pooling Cameroon DHS 2004 and 2011 datasets. However, ethnicity is coded differently. The final reports have the same response options for ethnicity in 2004 and 2011 but the datasets have different options.
1. I would like to know how ethnicity for 2004 was recoded (grouped) to produce the final options that match the 2004 final reports and 2011 dataset
2. I'm looking at determinants of maternal mortality and dropped nulliparous women using V201. Is this a problem if I drop some observations? I have seen some comments about not dropping observations but they were not clear why this should not be done. Can you please clarify?
3. Also, must weights be de-normalized? The sampling frame for Cameroon were from 2005 for the CDHS 2011 and from 2002/2003 for CDHS 2004. I don't know if these make a distinct difference looking at the population sizes for both years(2002/2003 and 2005) which are close but I was considering using the weights as they are. I assume this will mean the 2011 dataset will have more weight than 2004. I would appreciate your input.
4. Lastly, can you provide information on how maternal mortality ratio was derived?
5. For v467d, 7964 of 15426 respondents had NOT applicable. Is there information as to why there was such a large number for NA?
Thank you very much
Catherine
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