AIM: This retrospective study is aimed to review demographic and clinical characteristics of @entity29 to elucidate the probable factors associating with @entity29 development in Taleghani Hospital in Iran since 2001 during a 12-year-period. BACKGROUND: @entity31 ( @entity31 ) and @entity30 ( @entity30 ) are two major idiopathic entities of @entity29 ( @entity29 ). Previous studies have reported an increased incidence of @entity29 in Middle East countries. @entity1 AND METHODS: In the present study 1914 @entity1 with @entity31 , 318 @entity1 with @entity30 and 25 with @entity1960 ( @entity1960 ) were included. Demographic information, clinical features, extraintestinal manifestations, complications and extension of disease were collected and interpreted for all @entity1 . According to the time of registration, @entity1 were divided into seven groups. Statistical analysis was performed using the chi-square test. RESULTS: In seven groups of @entity29 @entity1 , disease registry was estimated for @entity31 , @entity30 , and total @entity29 during a 12-year-period. From 2001 to 2005, a relative increased registry was observed among @entity31 @entity1 . However, in the years 2006 and 2007 a       significant reduction in the number of @entity1 was reported. Then an increasing trend was observed in @entity31 @entity1 . @entity31 presented mostly with @entity294 , @entity360 and @entity294 , while most of @entity30 @entity1 complained of @entity490 . CONCLUSION: Evaluation of data related to registered @entity29 @entity1 in Iran shows that probable incidence and prevalence of @entity29 ( @entity31 and @entity30 ) is increasing compared to previous decades.

Time trend analysis and demographic features of XXXX in Tehran.

@entity1 :: ('9606', 'Species') :: ['participants', 'patients', 'PATIENTS'] @entity360 :: ('MESH:D006471', 'Disease') :: ['hematochezia'] @entity294 :: ('MESH:D003967', 'Disease') :: ['diarrhea', 'bloody diarrhea'] @entity31 :: ('MESH:D003093', 'Disease') :: ['UC', 'Ulcerative colitis'] @entity29 :: ('MESH:D015212', 'Disease') :: ['inflammatory bowel disease', 'IBD'] @entity1960 :: ('MESH:D003092', 'Disease') :: ['IC', 'indeterminate colitis'] @entity490 :: ('MESH:D015746', 'Disease') :: ['abdominal pain'] @entity30 :: ('MESH:D003424', 'Disease') :: ['CD', "Crohn's disease"]
@entity29 :: (MESH:D015212,Disease) :: ['inflammatory bowel disease']
