Type of studies reviewed in meta-analysis of proportion What types of studies are reviewed for meta-analysis of proportions? For example can I included case-control studies and collect data of number of events from the total cases? 
 A: From your reply to the comment above, your plan is to estimate the prevalence of a given health condition (specifically, breast ca) in a certain population group. If that is the case, studies estimating prevalence are cross-sectional studies. Therefore, the studies you need to include need to be cross-sectional ones. Case-control studies are not designed to estimate prevalence of a given health outcome, but rather to estimate risk factors. In fact, prevalence of a risk factor may be estimated separately for cases and controls in case-control studies but that doesn’t seem to be your objective.
For your question 

“for example can I included case-control studies and collect data of number of events from the total cases?”, 

my answer is “no” because in case-control studies, how many cases (persons with a disease) will be included into your study is decided by the design of your study – that is, if you decide to have a case-control study with a case-to-control ratio of 1:1, by default you will have a prevalence of 50% which is not representative of the prevalence of the disease in the reference population.
Cohort studies are meant primarily to estimate incidence (not prevalence) and risk factors. Hence, you may consider cohort studies if you also have an interest in incidence and/or risk factors.
Though not directly related to your question, looking at a previous post on meta-analysis of proportions here on CV could be useful.
