The overall standardized mortality ratio - - between observed and expected deaths - - was 1 . 1 . however , this ratio varied from 0 . 7 to 1 . 4 . ulcerative colitis - related mortality accounted for 17 % of all deaths 被观察者和期望值之间标准化后的总死亡率为1 . 1 。但是该比率在0 . 7到1 . 4之间波动。溃结相关的病死率占总死亡人数的17 % 。
百科解释
In epidemiology, the standardized mortality ratio or SMR, is a quantity, expressed as either a ratio or percentage quantifying the increase or decrease in mortality of a study cohort with respect to the general population.