Additional supporting information may be found in the online version of this article.

IBD_21591_sm_Supptable1.doc28KSupporting Table 1 Billing codes used to identify intestinal, rectal and peri-anal surgeries within the OHIP physician billing database.
IBD_21591_sm_Supptable2.doc70KSupporting Table 2 Classification of IBD-related health services use. Note that description of IBD-related diagnoses in the text refer to all diagnostic codes classified IBD-specific, IBD signs/symptoms and extra-intestinal manifestations.
IBD_21591_sm_Supptable3.doc41KSupporting Table 3 Descriptive characteristics of ODB patients.

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