SAS应用_医学统计学的例题程序及其结果,学习SAS的必备资料.
源代码在线查看： 例17-01计算结果.lst
The SAS System 09:34 Monday, April 1, 2002 69
The LIFETEST Procedure
Product-Limit Survival Estimates
Survival
Standard Number Number
T Survival Failure Error Failed Left
0.0000 1.0000 0 0 0 23
1.0000 0.9565 0.0435 0.0425 1 22
3.0000 0.9130 0.0870 0.0588 2 21
5.0000 . . . 3 20
5.0000 . . . 4 19
5.0000 0.7826 0.2174 0.0860 5 18
6.0000 . . . 6 17
6.0000 . . . 7 16
6.0000 0.6522 0.3478 0.0993 8 15
7.0000 0.6087 0.3913 0.1018 9 14
8.0000 0.5652 0.4348 0.1034 10 13
10.0000 . . . 11 12
10.0000 0.4783 0.5217 0.1042 12 11
14.0000* . . . 12 10
17.0000 0.4304 0.5696 0.1041 13 9
19.0000* . . . 13 8
20.0000* . . . 13 7
22.0000* . . . 13 6
26.0000* . . . 13 5
31.0000* . . . 13 4
34.0000 0.3228 0.6772 0.1216 14 3
34.0000* . . . 14 2
44.0000 0.1614 0.8386 0.1293 15 1
59.0000 0 1.0000 0 16 0
* Censored Observation
Summary Statistics for Time Variable T
Point 95% Confidence Interval
Quantile Estimate [Lower, Upper)
75% 44.0000 17.0000 59.0000
50% 10.0000 6.0000 44.0000
25% 6.0000 5.0000 10.0000
Mean 24.2277 Standard Error 4.9915
Summary of the Number of Censored and Uncensored Values
Total Failed Censored %Censored
23 16 7 30.4348
