I have recently become very interested in demographic data, and would like to communicate with someone who understands how (i.e.) population estimates and projections are generated and where they are used. If you can answer questions like "in the UN World Population Projections, why do the 2000 and 2010 estimates differ on how many people there were in 1960" or "who uses disease burden projections as an input and how precise and accurate do they need those projections to be" then I would love your help
Leave a comment with contact info or send me a message and I'll get back to you. Much thanks!!
I haven't got an answer to the direct question but Prof. Jesus Fernandez-Villaverde does some really good work on the economic consequences of current demographic trends and sometimes addresses problems within published data, and reasons why there is divergence amongst datasets. Have a crawl through his X account: https://x.com/JesusFerna7026
As it relates to many developing countries, I think there's a general consensus that a lot of the data (economic, demographic etc.) is at least unreliable and in some cases, just made up.