Factors affecting colectomy rate in XXXX : an epidemiologic study.

@entity1 @entity4272 @entity31 @entity22169 @entity1960
Factors affecting colectomy rate were studied in a retrospective population based series of 1586 @entity1 with @entity31 , in Stockholm County during 1955-84. Five hundred and sixty eight @entity1 (36%) had @entity1960 at diagnosis, 603 @entity1 (38%) @entity1960 , and 397 @entity1 (25%) @entity4272 . During a median period of observation of 13 years 514 @entity1 were treated by colectomy. The five, 10, and 25 year cumulative colectomy rate were 20% ( @entity22169 -22%), 28% (CI 26-30%), and 45% (CI 41-49%) respectively. The main factor affecting the colectomy rate was the extent of disease at diagnosis. @entity1 with @entity1960 showed a five, 10, and 25 year cumulative colectomy rate of 32% (CI 28-36%), 42% (CI 38-46%), and 65% (CI 58-72%) respectively. Ten per cent of the 1586 @entity1 had a colectomy during the first year after diagnosis, 4% during the second year and 1% during subsequent years. The age at diagnosis and sex did not affect the cumulative colectomy rate. Elective colectomy was performed in 322 cases (63%) and acute colectomy in 192. The duration of disease before colectomy fell during the study period due to a more standardised criteria for colectomy in severe attacks. One hundred and twenty nine (66%) of the acute colectomies were performed within two years from diagnosis.
