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???? Survival Analysis

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Survival Analysis To be or not to be is only a part of the question. The question also includes how long to be. – PowerPoint PPT presentation

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Title: ???? Survival Analysis


1
????Survival Analysis
  • To be or not to be is only a part of the
    question.
  • The question also includes how long to be.

2
? ?
  • ????(survival analysis)???????(????)??????????????
    ???????????????
  • ?????????????????????????????????????????????

3
??? ????????
  • ??????
  • ( survival time,failure time )
  • ?????????????????
  • ?????????????????
  • ?????????????????
  • ???????

4
??????
  • ???? ????
  • ?? ??
  • ???? ??
  • ?? ??
  • ?? ??
  • ?? ??

5
  • ???????????????,??????????,?????????,??????????,??
    ?????

6
???????
  • 1. ????(complete data)
  • ??????(???????)???
  • ????
  • 2. ????(????,censored data)
  • ??????????????
  • ?????????????????
  • ?????????

7
  • ??,????????1991-1995????
  • ?????????150?,???????
  • ???????????????,??
  • ????????????????DureS
  • ???????????2000?12?30?,
  • ????????

8
  • ??????????
  • ?? ?? ?? ???? ?????? ???? ????(?)
  • 1 ? 45 1991.05.20 1995.06.04 ??
    1476
  • 2 ? 50 1992.01.12 1998.08.25 ??
    2417
  • 3 ? 36 1991.10.24 1994.03.18 ??
    876
  • 4 ? 52 1994.11.02 2000.12.30 ??
    2250
  • 5 ? 56 1994.06.25 1995.03.17 ??
    265
  • 6 ? 60 1993.12.05 1996.08.16 ????
    985

9
????
  • ????????????????
  • ??????????t??,?????
  • ???????
  • ?????????
  • ???????
  • ????????????????,?????????????????
  • ????????????????

10
?????????????????
  • ??????
  • (conditional probability of survival)
  • ???????????????,??
  • ?????????????
  • ????????????????
  • ??1??????

11
  • ???
  • (survival rate, survival function )
  • ???????t??????????
  • ????

12
?????????????
  • ?????100??????,??1?
  • 2?3????????10?20?30,??
  • ????,?????????????
  • ????
  • ???????
  • ???
  • ??????

13
  • ??????,?????????
  • ????????????????
  • ??,?????????????
  • ???(cumulative probability of
  • survival),???????????
  • ??,3??????1???,?2?
  • ???,?3?????????

14
  • ????(survival curve)
  • ???(??)?????,????
  • ???,?????????????
  • ??????????
  • ????????????,???
  • ?????????????????
  • ????????????????
  • ?,???????????????
  • ?????

15
  • ?????20???????????
  • ???????(?)??
  • ???? 1 3 3 7 10 15 15 23 30
  • ???? 5 7 13 13 23 30 30 38
  • 42 42 45

16
(No Transcript)
17
???????
  • ?????(median survival time)
  • ???????,?????50?
  • ?????????
  • ???????,????????????????,?????
  • ???????????????????

18
???????????
  • (?)??
  • ??????????????
  • ?????
  • ????????????????????????(???????),???????????????
    ??,????????????????????????
  • ???????????????,???????????????,????????????

19
  • ???????????????????????????,??????????,??????????
    ??????????????????,??????????????,????????????????
    ?????????
  • ?????????????????,???????????????????????????????
    ?t?(?)????

20
  • ?????????
  • ???????
  • ???????????????????????????
  • ???????????????????

21
??????????
  • ??? ?? ??? ??? ???()
  • X1 ?? ?0
    32 48.5
  • ?1
    34 51.5
  • X2 ??(?) lt401 10
    15.1
  • 40-602
    37 56.1
  • 603
    19 28.8
  • X3 ?????
  • ?????0 20
    30.3
  • ????1
    46 69.7
  • X4 ????(cm)60 29
    43.9
  • gt61
    37 56.1

22
  • X5 ??????(PCNA)
  • lt550
    27 40.9
  • 551
    39 59.1
  • X6 ????? ?0 44
    66.7
  • ?1
    22 33.3
  • X7 ???? ?0
    58 87.9
  • ?1
    8 12.1
  • Time ??????? ????
  • Event ??????? ??0 22 33.3
  • ??1
    44 66.7

23
  • ??????????????
  • ?????????
  • ???????
  • ???????
  • ???????(?????)
  • ????
  • ????
  • ???????????????????10??

?????
24
  • (?)????
  • ???????
  • ??????
  • ???????
  • ???????????????
  • ???????????????,???????????

25
  • (?)????
  • ???????????,?????????????????
  • ????????
  • ?????
  • FoxBase?Foxpro?Virual Foxpro??????
  • ???????(SAS?SPSS?)
  • Office??????Excel?Access

26
  • ???????
  • ?? X1 X2 X3 X4 X5 X6 X7
    Time Event
  • 1 0 2 1 0 0
    1 0 2896 0
  • 2 0 2 1 0 0
    1 0 992 1
  • 3 1 2 1 1 0
    0 0 2811 0
  • 4 0 3 1 1 0
    1 0 2052 1
  • 5 1 2 0 1 0
    0 0 2975 0
  • 6 1 2 1 1 1
    1 1 856 1
  • 65 0 1 1 1 1
    0 0 584 1

27
????????
  • ???????????,????????
  • ?????????
  • ?????????
  • ??????????????????????????????????????,??????????,
    ?????????????????
  • ????????

28
  • (?)????
  • ?? Kaplan- Meier?,????
  • ?? log-rank??
  • ??????Cox????????(Cox????),???????????????
  • ?? Cox??????????

29
??? ???????????
  • ??????????????????
  • ??????Kaplan-Meier?(K-M???????)
  • Kaplan-Meier??Kaplan?Meier?1958??
  • ?,??????????????,???
  • ????(product-limit method),????
  • ???,???????????
  • ??????????
  • ????

30
  • ????????????
  • ??????
  • ????
  • ????

31
??? ?????log-rank??
  • log-rank??(??????????)
  • ?????????,???????????????????????
  • ?????????
  • ?????-1?
  • P0.05,????????????
  • Pgt0.05,??????????????????

32
??
  • ??????log-rank??????,????,????????(???????????????
    ?)???
  • ???
  • (??)
  • ???
  • (??)

33
  • ??????????????,?????????
  • ????????????,???????????,???????????????????????
  • ???????????,???????????????????????????????????

34
  • log-rank?????????????,??????????????,??????
  • ????????????,??????Bonferroni??,?
    ,??k??????,?????I???????? ?

35
??? Cox????????
  • Cox????????(Coxs proportional hazards regression
    model),??Cox?????
  • ??????????D.R.Cox?1972???,?????????????????,?????
    ????????????
  • ???????
  • ?????????
  • ??????

36
??Cox???????
  • h(t,X)t??????????????? ?(hazard
    function)?
  • h0(t)??????,???????0?t ???????
  • X1?X2??Xp??????????? ???
  • ß1? ß2?? ßp?????

37
  • ßgt0,RRgt1,????X???,?????,?X??????
  • ßlt0,RRlt1,????X???,?????,?X??????
  • ß0,RR1,????X???,?????,?X????????

38
???????????
  • (?)????
  • ?????
  • (?)????
  • ?????(likelihood ratio test)
  • ????( score test)
  • Wald??(Wald test)

39
??????????????
  • ??????
  • ?????(???)Forward
  • ?????(???)Backward
  • ????-???(???)Stepwise

40
  • ????
  • ??????????,???????,??0.10?
  • ????????????,???????,??0.05?0.01 ?
  • ?????????????????????????,??a??a?

41
????(????)
  • ????????
  • ?????????????????????????????
  • ????????????????????

42
????(????)
  • ????????????
  • ????(prognostic index,PI)
  • ??????,????
  • ??????,?????

43
????(????)
  • ??
  • ??????,?????,PI2.6929
  • ??????,??????,PI1.7616
  • ?????,?????,PI0.9313
  • ?????,??????,PI0
  • ?PI???????????????,?????(????????????)????????????
    ?,?????????????,???????t??????

44
??Cox????????????
  • (?)????
  • ??????????
  • ???????????
  • ???????????????,???????????????????(??????)??????
    ??10??,??????????????????,??????????

45
  • ???????????
  • ?????,????????????????????????
  • ?????,????,???????,??????????????

46
  • ?????????????????,???????????????????????????????,
    ?????????????????,????????????????????,??????,????
    ?????????????

47
  • ??????????????(?????????????,????????????0)?
  • ?????????????PI??,??????Cox??????????kaplan-Meier
    ????????,?????????,??Cox???????
  • ???????????????,???????????,?????????????????????
    ?

48
(?)????
  • ????
  • logistic????????????,????
  • ???????,???????????,
  • ???????????????Cox???
  • ???????logistic?????????
  • ????????????????,???
  • ????????????????
  • ????

49
  • ????????
  • ????????????????????????????????
  • ???????????????????????????????????????????

50
??(????????)
  • 1.?????
  • ????????????????????????????????????,?????????????
    ()?
  • ???????
  • ???????
  • Kaplan-Meier??????
  • log-rank???????????
  • Cox?????????

51
  • 2.??
  • ??Kaplan-Meier?????????
  • ??log-rank???????P??
  • ???????
  • ????(?????)?
  • ??????
  • ?????????(????)
  • ??????(????)
  • ???????????
  • Cox?????????

52
Cox??????????logistic?????
?????? logistic?? Cox??
???? Y???? Y???? Y???????
X?????????????? X?????????????? X??????????????
????
???? ????????? ????????? ?????????
???? ????? ????? ?????
???? F-test t-test ????? Wald?? score?? ????? Wald?? score??
???? ????b ???OR RR
???? ??????10? ??????20? ???????????10?
?? ???? ???? Y ???? ?????P(Y1) ???? ???? S(t)
53
????
  • ????????????????????
  • ?26???????????,??????
  • ????????????????,???
  • ?120??????????????(??
  • 0???1),???????????
  • ???????????

54
  • ?????????????
  • ????? ?? ??? ?? ???()
  • ? 5 13 18
    27.8
  • ? 3 5 8
    37.5
  • ? ? 8 18 26
    30.8
  • ???????,??Fisher?????,??P0.667,??????????????????

55
  • ????????????,????????????????????????????,????????
    ????????????(?)?????????(501lt500)?CD34??(??
    1??0)???(?1?0)????

56
  • ???logistic??????
  • ?? ???? Wald?? P OR
  • ??? 1.457 1.161 0.281
    4.29
  • ???? 2.961 4.778 0.029 19.2
  • ????
  • ?????logistic????,?????0.10??,???????????,????????
    ???????(P0.281)?

57
  • ?????????,??????????,???????????????????,?????????
  • ??????,??????????????,????log-rank????????????????
    ????,???1.28,P0.2579,????????????????????

58
  • ???????????????????,????Cox????,?????0.10???????
  • ?? ???? ?? P RR
  • ??? 1.838 3.709 0.054 6.29
  • CD34 1.877 8.904 0.003
    6.54
  • ???? 3.205 8.838 0.003 24.4
  • ????

59
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