Despite a large body of research on the effects of IFRS adoption on analyst forecast accuracy, no study has explicitly examined the main variable definitions of analyst forecast accuracy. I conduct a systematic review of 43 articles pertaining to the effects of IFRS adoption on analysts’ forecasts to assess both definitions and cultural context of the studies. The study identifies four key categorizations of variable definitions, with one category standing out as a superior definition. I find that the definition is mostly used inthe context of the main IFRS adoption in the studied country, while factor-specific variables are increasingly used when the study purpose deviates from the generalized IFRS adoption. The importance of cultural context mostly derives from different enforcement regimes, with indications that factor-specific definitions lead to different and less confluent results throughout the literature. This review has implications for both future research and standard setters to assess the impact of future standard implementations.