Incidence rate of IBD after IBS diagnosis and the incidence rate ratio.

Incident rate ratios in bold are statistically significant and have a p-value †n is the number of people diagnosed with IBD within the stratum;‡% is the proportion that these diagnoses represent within the stratum;††N is the total number of patients contributing time to the stratum. The rates are split by time since IBS was diagnosed and the current age of the patient. This means, for example, that the risk of IBD for someone who is 34 and was diagnosed with IBS 6 years ago can be seen as 2.6 times greater than someone without IBS.Incidence rate of IBD after IBS diagnosis and the incidence rate ratio.