Larynx Tumor survival data   

                     The LIFETEST Procedure

                Product-Limit Survival Estimates
 
                                  Survival
                                  Standard    Number  Number 
    time    Survival   Failure     Error      Failed   Left  

  0.0000      1.0000          0          0       0      90   
  0.1000      0.9889     0.0111     0.0110       1      89   
  0.2000      0.9778     0.0222     0.0155       2      88   
  0.3000           .          .          .       3      87   
  0.3000           .          .          .       4      86   
  0.3000      0.9444     0.0556     0.0241       5      85   
  0.4000      0.9333     0.0667     0.0263       6      84   
  0.5000      0.9222     0.0778     0.0282       7      83   
...
  2.0000           .          .          .      23      67   
  2.0000      0.7333     0.2667     0.0466      24      66   
  2.2000*          .          .          .      24      65   
  2.3000      0.7221     0.2779     0.0472      25      64   
  2.4000      0.7108     0.2892     0.0478      26      63   
...
  2.6000*          .          .          .      26      61   
...
  7.8000      0.2965     0.7035     0.0666      50       8   
  8.0000*          .          .          .      50       7   
  8.1000*          .          .          .      50       6   
  8.1000*          .          .          .      50       5   
  9.3000*          .          .          .      50       4   
  9.3000*          .          .          .      50       3   
  9.6000*          .          .          .      50       2   
 10.1000*          .          .          .      50       1   
 10.7000*          .          .          .      50       0   

NOTE: The marked survival times are censored observations.


           Summary Statistics for Time Variable time
                       Quartile Estimates
 
                       Point     95% Confidence Interval
          Percent    Estimate      [Lower      Upper)

               75       .          7.0000       .    
               50      6.0000      3.8000      7.0000
               25      2.0000      1.3000      3.5000


                       Mean    Standard Error
                     4.8878            0.3075

   NOTE: The mean survival time and its standard error were 
underestimated because the largest observation was censored
and the estimation was restricted to the largest event time.


           Summary Statistics for Time Variable time

                       Quartile Estimates
 
                       Point     95% Confidence Interval
          Percent    Estimate      [Lower      Upper)

               75      16.000       8.000      28.000
               50       5.500       4.000      10.000
               25       2.500       1.000       4.000


                       Mean    Standard Error

                     12.886             3.170


     Summary of the Number of Censored and Uncensored Values
 
                                             Percent
               Total  Failed    Censored    Censored

                  40      39           1        2.50
         Weening data for mothers who smoked and drank  

                     The LIFETEST Procedure
                Product-Limit Survival Estimates
 
                                  Survival
                                  Standard    Number  Number 
    time    Survival   Failure     Error      Failed   Left  

   0.000      1.0000          0          0       0      40   
   1.000           .          .          .       1      39   
   1.000           .          .          .       2      38   
...
  32.000      0.0857     0.9143     0.0462      36       3   
  40.000      0.0571     0.9429     0.0386      37       2   
  48.000      0.0286     0.9714     0.0280      38       1   
 104.000           0     1.0000          0      39       0   

   NOTE: The marked survival times are censored observations.


           Summary Statistics for Time Variable time

                       Quartile Estimates
 
                       Point     95% Confidence Interval
          Percent    Estimate      [Lower      Upper)

               75      16.000       8.000      28.000
               50       5.500       4.000      10.000
               25       2.500       1.000       4.000


                       Mean    Standard Error

                     12.886             3.170

     Summary of the Number of Censored and Uncensored Values
                                             Percent
               Total  Failed    Censored    Censored
                  40      39           1        2.50