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Although the Rome IV criteria are the most recent criteria to diagnose irritable bowel syndrome (IBS), their sensitivity has been shown to be low in Chinese and Western populations. There are scanty data comparing the Rome III and Rome IV criteria in diagnosis of IBS in the Indian and Bangladeshi populations where abdominal pain, an essential component of diagnosis of IBS by the Rome IV criteria, is less in frequency and of lower severity.

We analyzed the Indian and Bangladeshi data from the Rome Global Epidemiology Study to compare diagnostic sensitivity of the Rome III and Rome IV criteria for IBS, internal shifts in diagnostic categories of disorders of gut–brain interaction (DGBI), the severity of IBS diagnosed by the Rome III and Rome IV criteria, and consultation patterns in these populations.

The Rome IV criteria were less sensitive than the Rome III criteria to …