Surveys included anthropometric measurements, measles vaccination history and retrospective mortality data collection.
We are most grateful to Dr. Clareann Bunker for her assistance with the mortality data collection.
GM and AHS directed mortality data collection and coding of death certificates.
In 1992, the WCDC became the first center in China to standardize its system for mortality data collection.
However, mortality data collection systems in Vietnam in general and for RTIs in particular, remain inconsistent and incomplete.
Where a date of death was recorded, additional Ministry of Health mortality data collection meant that the date was likely to be accurate.
This case study highlighted the challenges of mortality data collection along with the strengths and weaknesses of the MSF community-based surveillance system.
Follow-up time was recorded as the period between baseline visit (in 2001 2004) and date of death or mortality data collection (March 1 , 2008.
There was, however, much greater variance than this for some cancers, which may reflect systematic error in one or other cancer mortality data collection.
At times, mortality data collection has been poor and mortality levels could not be derived due to the extent of missing or illogical data in selected surveys and censuses.
