78d97f2a__Effective_Health_Care_Program_gth_of_evidence_rating_domains_Domain_Name
[Domain Type] Optional Strength of association refers to the likelihood that the observed effect is large enough that it cannot have occurred solely as a result of bias from potential confounding factors. [Domain Score and Application] This additional domain should be considered when the effect size is particularly large. Score as one of two levels: Strong: Large effect size that is unlikely to have occurred in the absence of a true effect of the intervention Weak: Small enough effect size that it could have occurred solely as a result of bias from confounding factors. [Domain Name] 
Strength of association (magnitude of effect)
Radiotherapy Treatments for Head and Neck Cancer: Update - Research Protocol | AHRQ Effective Health Care Program
Domain Name