Study design

#1
What type of study design is it when we collect mortality rates from the past 20 years, and do a comparison between two groups now?
 

hlsmith

Less is more. Stay pure. Stay poor.
#2
More info needed, but observational retrospective design. Is it a cohort of people then you look to see mortality status and cause of death at same time?
 
#3
More info needed, but observational retrospective design. Is it a cohort of people then you look to see mortality status and cause of death at same time?
For instance the neonatal mortality rate of the last 20 years (2000-2020) has been collected and they are now comparing a group of deaths from preterm and deaths from term delivery.
 
#5
Are patients matched and what are you comparing?
No its not a total analysis, which is why despite the results sounding a bit like cross sectional, the method and the aim sounds like case series or case studies. They have mentioned that they aimed to investigate the frequency and the characteristics of the cases of deaths, however in the discussion and results they have mentioned the causes.
It is more like they are just looking at how many of the total deaths were due to pre term birth and how many were from term birth.
So I thought it was cross sectional but it was written in a way that sounded like something in between a case series and a cross sectional.