78d97f2a__Effective_Health_Care_Program_gth_of_evidence_rating_domains_Domain_Name
[Domain Type] Required This domain reflects the degree to which included studies for a given outcome have high likelihood of protection against bias (i.e., good internal validity), assessed through two main elements: Study design: Whether included studies are RCTs or other designs such as nonexperimental or observational studies. Study conduct: Considers aggregation of ratings of risk of bias of the individual studies under consideration. [Domain Score and Application] Score as one of three levels, separately by type of study design: Low level of study limitations Medium level of study limitations High level of study limitations [Domain Name] 
Study limitations
Radiotherapy Treatments for Head and Neck Cancer: Update - Research Protocol | AHRQ Effective Health Care Program
Domain Name