1 ESCOLHA DO BANCO DE DADOS

1.1 Transplante de medula óssea – clássico e mudança no tempo (Inca)

Estes dados provêm de uma coorte de 96 pacientes submetidos a transplante de medula óssea para tratamento de leucemia mieloide crônica, no período de junho de 1986 a junho de 1998, no Centro de Transplante de Medula Óssea do Instituto Nacional do Câncer (Cemo – Inca). O acompanhamento dessa coorte possibilitou o estudo do efeito de fatores prognósticos para a ocorrência de doença do enxerto contra hospedeiro aguda e crônica, da sobrevivência livre de doença e da sobrevivência global. As covariáveis registradas para cada paciente estão descritas na tabela a seguir. Para mais detalhes acerca dessa coorte e do ajuste de modelo de sobrevivência de Cox clássico e Cox estendido, consulte Byington (1999).

Estes dados estão organizados em dois arquivos. O arquivo tmoclas.dat tem o formato clássico, com uma linha para cada paciente.

O arquivo tmopc.csv está preparado para uma análise de sobrevivência com covariáveis tempo-dependentes em que a variável que muda no tempo é a recuperação das plaquetas (reqplaq), doença do enxerto crônica (decr) e aguda (deag).

1.1.1 Variável: Descrição

  • id: identificador do paciente

  • sexo: 1 = masculino, 2 = feminino

  • idade: idade na data do transplante (5 a 53 anos)

  • status: 0 = censura, 1 = óbito

  • deag: doença enxerto aguda: 0 = não, 1 = sim

  • decr: doença enxerto crônica: 0 = não, 1 = sim

  • recplaq: 0 = plaquetas não recuperadas, 1 = recuperadas

  • fasegr: fase da doença na data do transplante agrupada: CP1 = 1a crônica e Other = outras

  • inicio: data do transplante ou da mudança de covariável

  • fim: data de mudança de covariável ou do fim do estudo

1.1.2 Dados

## 
## -- Column specification --------------------------------------------------------
## cols(
##   id = col_double(),
##   sexo = col_double(),
##   idade = col_double(),
##   status = col_double(),
##   inicio = col_double(),
##   fim = col_double(),
##   deag = col_double(),
##   decr = col_double(),
##   recplaq = col_double(),
##   fasegr = col_character()
## )

2 ESTIMADOR KAPLAN-MEIER

## Call: survfit(formula = Surv(t, censur) ~ 1)
## 
##  time n.risk n.event survival std.err lower 95% CI upper 95% CI
##    31    194       1    0.995 0.00514        0.985        1.000
##    32    190       2    0.984 0.00895        0.967        1.000
##    39    174       1    0.979 0.01054        0.958        1.000
##    40    173       1    0.973 0.01190        0.950        0.997
##    48    164       1    0.967 0.01322        0.942        0.993
##    51    160       1    0.961 0.01446        0.933        0.990
##    54    159       3    0.943 0.01757        0.909        0.978
##    63    149       1    0.937 0.01856        0.901        0.974
##    65    145       1    0.930 0.01952        0.893        0.969
##    69    144       1    0.924 0.02043        0.885        0.965
##    70    143       1    0.917 0.02128        0.876        0.960
##    71    142       1    0.911 0.02209        0.869        0.955
##    74    140       1    0.904 0.02287        0.861        0.950
##    76    138       1    0.898 0.02362        0.853        0.945
##    78    135       1    0.891 0.02437        0.845        0.940
##    79    133       1    0.884 0.02509        0.837        0.935
##    83    130       1    0.878 0.02580        0.828        0.930
##    84    127       1    0.871 0.02651        0.820        0.924
##    98    123       1    0.864 0.02722        0.812        0.919
##   100    121       1    0.856 0.02791        0.803        0.913
##   101    120       1    0.849 0.02858        0.795        0.907
##   104    118       1    0.842 0.02923        0.787        0.901
##   120    110       1    0.834 0.02995        0.778        0.895
##   128    107       1    0.827 0.03067        0.769        0.889
##   139    105       1    0.819 0.03137        0.760        0.883
##   149     97       1    0.810 0.03216        0.750        0.876
##   162     92       1    0.802 0.03300        0.739        0.869
##   185     86       1    0.792 0.03390        0.728        0.862
##   200     82       1    0.783 0.03484        0.717        0.854
##   210     81       1    0.773 0.03572        0.706        0.846
##   211     80       1    0.763 0.03656        0.695        0.838
##   214     77       1    0.753 0.03741        0.683        0.830
##   216     76       1    0.743 0.03820        0.672        0.822
##   244     67       1    0.732 0.03921        0.659        0.813
##   261     64       1    0.721 0.04023        0.646        0.804
##   263     63       1    0.709 0.04119        0.633        0.795
##   281     59       1    0.697 0.04221        0.619        0.785
##   313     58       1    0.685 0.04316        0.606        0.775
##   347     55       1    0.673 0.04414        0.592        0.765
##   370     53       1    0.660 0.04510        0.577        0.755
##   371     52       1    0.648 0.04598        0.563        0.744
##   415     49       1    0.634 0.04690        0.549        0.733
##   425     48       1    0.621 0.04775        0.534        0.722
##   427     47       1    0.608 0.04853        0.520        0.711
##   434     46       1    0.595 0.04924        0.506        0.699
##   453     42       1    0.581 0.05006        0.490        0.687
##   475     40       1    0.566 0.05087        0.475        0.675
##   488     38       1    0.551 0.05167        0.459        0.662
##   522     36       1    0.536 0.05245        0.442        0.649
##   672     30       1    0.518 0.05366        0.423        0.635

2.1 Gráfico KAPLAN-MEIER

3 ESTIMADOR DE NELSON-AALEN

## Call: survfit(formula = coxph(Surv(t, censur) ~ 1, method = "breslow"))
## 
##  time n.risk n.event survival std.err lower 95% CI upper 95% CI
##    31    194       1    0.995 0.00513        0.985        1.000
##    32    190       2    0.984 0.00891        0.967        1.000
##    39    174       1    0.979 0.01050        0.958        1.000
##    40    173       1    0.973 0.01186        0.950        0.997
##    48    164       1    0.967 0.01318        0.942        0.993
##    51    160       1    0.961 0.01441        0.933        0.990
##    54    159       3    0.943 0.01748        0.910        0.978
##    63    149       1    0.937 0.01846        0.901        0.974
##    65    145       1    0.931 0.01943        0.893        0.969
##    69    144       1    0.924 0.02033        0.885        0.965
##    70    143       1    0.918 0.02119        0.877        0.960
##    71    142       1    0.911 0.02199        0.869        0.955
##    74    140       1    0.905 0.02277        0.861        0.950
##    76    138       1    0.898 0.02353        0.853        0.945
##    78    135       1    0.892 0.02427        0.845        0.940
##    79    133       1    0.885 0.02499        0.837        0.935
##    83    130       1    0.878 0.02570        0.829        0.930
##    84    127       1    0.871 0.02641        0.821        0.925
##    98    123       1    0.864 0.02712        0.813        0.919
##   100    121       1    0.857 0.02781        0.804        0.913
##   101    120       1    0.850 0.02848        0.796        0.908
##   104    118       1    0.843 0.02913        0.788        0.902
##   120    110       1    0.835 0.02984        0.779        0.896
##   128    107       1    0.827 0.03056        0.770        0.889
##   139    105       1    0.820 0.03126        0.760        0.883
##   149     97       1    0.811 0.03205        0.751        0.876
##   162     92       1    0.802 0.03288        0.740        0.869
##   185     86       1    0.793 0.03378        0.730        0.862
##   200     82       1    0.783 0.03472        0.718        0.855
##   210     81       1    0.774 0.03560        0.707        0.847
##   211     80       1    0.764 0.03643        0.696        0.839
##   214     77       1    0.754 0.03727        0.685        0.831
##   216     76       1    0.744 0.03806        0.674        0.823
##   244     67       1    0.733 0.03906        0.661        0.814
##   261     64       1    0.722 0.04008        0.648        0.805
##   263     63       1    0.711 0.04103        0.635        0.796
##   281     59       1    0.699 0.04204        0.621        0.786
##   313     58       1    0.687 0.04299        0.608        0.776
##   347     55       1    0.674 0.04396        0.594        0.766
##   370     53       1    0.662 0.04491        0.579        0.756
##   371     52       1    0.649 0.04579        0.565        0.745
##   415     49       1    0.636 0.04670        0.551        0.735
##   425     48       1    0.623 0.04755        0.536        0.724
##   427     47       1    0.610 0.04832        0.522        0.712
##   434     46       1    0.597 0.04903        0.508        0.701
##   453     42       1    0.583 0.04985        0.493        0.689
##   475     40       1    0.568 0.05065        0.477        0.677
##   488     38       1    0.554 0.05144        0.461        0.664
##   522     36       1    0.538 0.05222        0.445        0.651
##   672     30       1    0.521 0.05341        0.426        0.637

3.1 Gráfico NELSON-AALEN

4 TEMPO MEDIANO

survfit(Surv(t,censur)~1)
## Call: survfit(formula = Surv(t, censur) ~ 1)
## 
##       n  events  median 0.95LCL 0.95UCL 
##     259      53      NA     453      NA

5 TEMPO MÉDIO

## Call: survfit(formula = Surv(t, censur) ~ 1, conf.type = "plain")
## 
##  time n.risk n.event survival std.err lower 95% CI upper 95% CI
##    31    194       1    0.995 0.00514        0.985        1.000
##    32    190       2    0.984 0.00895        0.967        1.000
##    39    174       1    0.979 0.01054        0.958        0.999
##    40    173       1    0.973 0.01190        0.950        0.996
##    48    164       1    0.967 0.01322        0.941        0.993
##    51    160       1    0.961 0.01446        0.933        0.989
##    54    159       3    0.943 0.01757        0.909        0.977
##    63    149       1    0.937 0.01856        0.900        0.973
##    65    145       1    0.930 0.01952        0.892        0.968
##    69    144       1    0.924 0.02043        0.884        0.964
##    70    143       1    0.917 0.02128        0.876        0.959
##    71    142       1    0.911 0.02209        0.867        0.954
##    74    140       1    0.904 0.02287        0.859        0.949
##    76    138       1    0.898 0.02362        0.851        0.944
##    78    135       1    0.891 0.02437        0.843        0.939
##    79    133       1    0.884 0.02509        0.835        0.934
##    83    130       1    0.878 0.02580        0.827        0.928
##    84    127       1    0.871 0.02651        0.819        0.923
##    98    123       1    0.864 0.02722        0.810        0.917
##   100    121       1    0.856 0.02791        0.802        0.911
##   101    120       1    0.849 0.02858        0.793        0.905
##   104    118       1    0.842 0.02923        0.785        0.899
##   120    110       1    0.834 0.02995        0.776        0.893
##   128    107       1    0.827 0.03067        0.767        0.887
##   139    105       1    0.819 0.03137        0.757        0.880
##   149     97       1    0.810 0.03216        0.747        0.873
##   162     92       1    0.802 0.03300        0.737        0.866
##   185     86       1    0.792 0.03390        0.726        0.859
##   200     82       1    0.783 0.03484        0.714        0.851
##   210     81       1    0.773 0.03572        0.703        0.843
##   211     80       1    0.763 0.03656        0.692        0.835
##   214     77       1    0.753 0.03741        0.680        0.827
##   216     76       1    0.743 0.03820        0.669        0.818
##   244     67       1    0.732 0.03921        0.655        0.809
##   261     64       1    0.721 0.04023        0.642        0.800
##   263     63       1    0.709 0.04119        0.629        0.790
##   281     59       1    0.697 0.04221        0.615        0.780
##   313     58       1    0.685 0.04316        0.601        0.770
##   347     55       1    0.673 0.04414        0.586        0.759
##   370     53       1    0.660 0.04510        0.572        0.749
##   371     52       1    0.648 0.04598        0.557        0.738
##   415     49       1    0.634 0.04690        0.542        0.726
##   425     48       1    0.621 0.04775        0.528        0.715
##   427     47       1    0.608 0.04853        0.513        0.703
##   434     46       1    0.595 0.04924        0.498        0.691
##   453     42       1    0.581 0.05006        0.482        0.679
##   475     40       1    0.566 0.05087        0.466        0.666
##   488     38       1    0.551 0.05167        0.450        0.652
##   522     36       1    0.536 0.05245        0.433        0.639
##   672     30       1    0.518 0.05366        0.413        0.623

5.1 Gráfico TEMPO MÉDIO

5.1.1 Resultado Tempo médio

## [1] 476.7986

6 CURVA TTT

## 
## -- Column specification --------------------------------------------------------
## cols(
##   id = col_double(),
##   sexo = col_double(),
##   idade = col_double(),
##   status = col_double(),
##   inicio = col_double(),
##   fim = col_double(),
##   deag = col_double(),
##   decr = col_double(),
##   recplaq = col_double(),
##   fasegr = col_character()
## )
##     time censur Cum.Total.Time       TTT        i/n
## 68    31      1           7412 0.1501104 0.01886792
## 71    32      1           7602 0.1539583 0.03773585
## 73    32      1           7602 0.1539583 0.05660377
## 86    39      1           8865 0.1795370 0.07547170
## 87    40      1           9038 0.1830407 0.09433962
## 97    48      1          10373 0.2100776 0.11320755
## 100   51      1          10856 0.2198594 0.13207547
## 102   54      1          11333 0.2295198 0.15094340
## 103   54      1          11333 0.2295198 0.16981132
## 104   54      1          11333 0.2295198 0.18867925
## 111   63      1          12700 0.2572048 0.20754717
## 115   65      1          12992 0.2631185 0.22641509
## 116   69      1          13568 0.2747838 0.24528302
## 117   70      1          13711 0.2776799 0.26415094
## 118   71      1          13853 0.2805557 0.28301887
## 121   74      1          14275 0.2891022 0.30188679
## 122   76      1          14551 0.2946919 0.32075472
## 125   78      1          14823 0.3002005 0.33962264
## 127   79      1          14956 0.3028941 0.35849057
## 132   83      1          15477 0.3134455 0.37735849
## 133   84      1          15604 0.3160176 0.39622642
## 137   98      1          17338 0.3511351 0.41509434
## 139  100      1          17581 0.3560565 0.43396226
## 140  101      1          17701 0.3584867 0.45283019
## 143  104      1          18057 0.3656966 0.47169811
## 150  120      1          19845 0.4019078 0.49056604
## 153  128      1          20711 0.4194463 0.50943396
## 155  139      1          21872 0.4429593 0.52830189
## 163  149      1          22884 0.4634546 0.54716981
## 168  162      1          24095 0.4879802 0.56603774
## 174  185      1          26136 0.5293153 0.58490566
## 178  200      1          27388 0.5546712 0.60377358
## 179  210      1          28198 0.5710756 0.62264151
## 181  211      1          28278 0.5726958 0.64150943
## 183  214      1          28511 0.5774146 0.66037736
## 184  216      1          28663 0.5804929 0.67924528
## 194  244      1          30687 0.6214837 0.69811321
## 196  261      1          31779 0.6435992 0.71698113
## 197  263      1          31905 0.6461510 0.73584906
## 201  281      1          32991 0.6681451 0.75471698
## 202  313      1          34847 0.7057334 0.77358491
## 205  347      1          36754 0.7443547 0.79245283
## 207  370      1          37988 0.7693461 0.81132075
## 208  371      1          38040 0.7703992 0.83018868
## 211  415      1          40242 0.8149948 0.84905660
## 212  425      1          40722 0.8247160 0.86792453
## 213  427      1          40816 0.8266197 0.88679245
## 214  434      1          41138 0.8331409 0.90566038
## 218  453      1          41977 0.8501327 0.92452830
## 220  475      1          42872 0.8682585 0.94339623
## 222  488      1          43378 0.8785062 0.96226415
## 224  522      1          44603 0.9033153 0.98113208
## 230  672      1          49377 1.0000000 1.00000000
## Barlow-Proschan's test
## W=24.5105 k=53
## Z=-0.7155 p.value=0.2371

7 OBTENDO AJUSTES DOS MODELOS EXPONENCIAL

## $par
## [1] 964.381
## 
## $value
## [1] 417.2415
## 
## $counts
## function gradient 
##       11       10 
## 
## $convergence
## [1] 0
## 
## $message
## NULL
## 
## $hessian
##              [,1]
## [1,] 5.712764e-05
##             l      AIC    CAIC      BIC
## [1,] 834.4829 836.4829 836.577 840.0398
##      parametros       EP   tvalue       valorp       LI       LS
## [1,]    964.381 132.3052 7.289064 1.889554e-12 703.8502 1224.912

8 OBTENDO AJUSTES DOS MODELOS WEIBULL

## $par
## [1] 929.0164139   0.7295653
## 
## $value
## [1] 371.7855
## 
## $counts
## function gradient 
##      160      100 
## 
## $convergence
## [1] 1
## 
## $message
## NULL
## 
## $hessian
##               [,1]         [,2]
## [1,] -1.831779e-05   0.05475863
## [2,]  5.475863e-02 137.15171549
##             l      AIC     CAIC      BIC
## [1,] 743.5709 747.5709 747.7284 754.6846
##       parametros         EP   tvalue       valorp        LI        LS
## [1,] 929.0164139        NaN      NaN          NaN       NaN       NaN
## [2,]   0.7295653 0.05765385 12.65424 3.375429e-29 0.6160354 0.8430953

9 SOBREVIVÊNCIA ESTIMADA VERSUS KAPLEN-MEIER

## 
## -- Column specification --------------------------------------------------------
## cols(
##   id = col_double(),
##   sexo = col_double(),
##   idade = col_double(),
##   status = col_double(),
##   inicio = col_double(),
##   fim = col_double(),
##   deag = col_double(),
##   decr = col_double(),
##   recplaq = col_double(),
##   fasegr = col_character()
## )
## The following objects are masked from tmopc (pos = 3):
## 
##     deag, decr, fasegr, fim, id, idade, inicio, recplaq, sexo, status

9.1 Gráfico SOBREVIVÊNCIA VERSUS KAPLEN-MEIER

10 CRÉDITOS

Criado por :

  • Ester Rosa

  • Gabriel Thompson

  • Mateus Elias

  • Paulo Henrique