The following studies find evidence of an initial or continuing lack of complete comparability following mandatory IFRS adoption.43 The methods used in these studies show less variety than those used to assess whether IFRS adoption changed levels of comparability. All but one of them focus on financial reporting evidence, with some looking at disclosure content (how far do firms disclose the same items of information?), some at accounting policy choices, and some at non-compliance with requirements. One paper takes a different approach and looks at the valuation usefulness of earnings and book values.
The following three papers look at differences in disclosures.