Hi everybody. I am doing a meta-analysis of observational studies. As the disease I am working on has different stages, some of the studies reported ORs(95%CI) for each stage separately in comparison to a single (shared) control population. I wonder if we can combine these two ORs (and their 95%CI) given that they reflect two case group but a single control group. Some other info:
*The sample size for each case group is different
*we have the sample size for each of the groups but not the frequency of exposure (otherwise we could use just the raw data)
Any ideas?
Thanks
*The sample size for each case group is different
*we have the sample size for each of the groups but not the frequency of exposure (otherwise we could use just the raw data)
Any ideas?
Thanks