SAS实现 COX分析

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COX分析　ＳＡＳ实现在ＣＯＸ分析中存在两种删失状态，如有失访与观察期结束两种状态，在ＳＡＳ中应怎样调用phreg过程。
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关键词：Cox phreg PHR 观察期 REG SAS Cox

1# gdlwdzz

1. 
   
2. COX分析　ＳＡＳ实现在ＣＯＸ分析中存在两种删失状态，如有失访与观察期结束两种状态，在ＳＡＳ中应怎样调用phreg过程。
   
3. 谢谢!

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In survival analysis, we need at least two variables to be defined in the data set, one is the indicator of event and another is time to event. The event is binary, for example, 1 = event occurred and 0 = censored, including lost to follow-up and end of follow-up. The time to event has been defined as the time when the event has been achieved or censored, whichever comes first. The censored consists of different types and the most common one is right censored.
The code may be similar to the following:

1. 
   
2. proc phreg data = YourData;
   
3.    model TimeToEvent*censored(0) = Covariates;
   
4. run;

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More details please refer to SAS Proc phreg, etc. The entry level book I would recommend is Allison's Survival analysis using SAS. Also you may read the one I posted in Pinggu before for advanced and extensive knowledge.