The exclusion of the former from survival analyses will tend to underestimate survival overall, and, if ethnicity is associated with treatment type, may obscure any differences in survival between ethnic groups.
The former addresses survival over time and compares different groups of patients with respect to the survival curves.
In the former category, survival time becomes exaggerated by lead-time bias, length bias sampling, and possibly also by selection bias and overdiagnosis bias.
The move also made Mr. Sharon dependent on Labor, his former rival, for survival in power.
It would make Mr. Sharon heavily dependent on the Labor Party, his former rival, for survival in power.
Today, fretful for their own survival, former loyalists on the UMP backbenches have begun to desert the president.
That would leave Mr. Sharon with 65 votes and make him dependent on Labor, a former rival, for survival in power.
The president also plans to trek the Alaskan wilderness with Bear Grylls, the former special forces survival expert and host of NBC's outdoor adventure show Running Wild with Bear Grylls, in an effort to highlight conservation.
Ming Campbell, foreign affairs spokesman, replied Paddy Ashdown because of the former Royal Marine's survival skills; Shirley Williams, grande dame of the party, thought Nelson Mandela would keep up her spirits; and another suggestion from the platform was Simon Hughes, the garrulous home affairs spokesman, who is never short of conversation.
