nwtsco


Dataset from the National Wilms Tumor Study (NWTS)


datasets

Contains tools to fit additive hazards model to random sampling, two-phase sampling and two-phase sampling with auxiliary information. This package provides regression parameter estimates and their model-based and robust standard errors.  It also offers tools to make prediction of individual specific hazards.

Jie Kate Hu

addhazard

Fit Additive Hazards Models for Survival Analysis

nwtsco function

A data frame with 3915 rows and 12 variables:
<dl>
<dt>trel</dt><dd>Time to relapse orlast date seen (yr), continuous</dd> <dt>tsur</dt><dd>Time to death or last date seen (yr), continuous</dd> <dt>relaps</dt><dd>Indicator of relapse,
               0 = Alive no prior relapse when last seen,
               1 = Relapsed after trel years</dd> <dt>dead</dt><dd>Indicator of death,
              0 = Alive when last seen,
              1 = Died after tsur years</dd> <dt>study</dt><dd>NWTS study,
             3 = NWTS-3,
             4 = NWTS-4</dd> <dt>stage</dt><dd>Stage of disease,
            1=I,
            2=II,
            3=III,
            4=IV</dd> <dt>histol</dt><dd>Central Path histology,
             0 = Favorable (FH),
             1 = Unfavorable (UH)</dd> <dt>instit</dt><dd>Institutional histology,
              0 = Favorable (FH),
             1 = Unfavorable (UH)</dd> <dt>age</dt><dd>Age at diagnosis (yr), continuous</dd> <dt>yr</dt><dd>Year of diagnosis, calendar year</dd> <dt>specwgt</dt><dd>Weight of tumor bearing specimen, in grams (continuous)</dd> <dt>tumdiam</dt><dd>Diameter of tumor, in centimeters (continuous)</dd> </dl>

Format

<a href="http://faculty.washington.edu/norm/datasets/nwts-share.txt">http://faculty.washington.edu/norm/datasets/nwts-share.txt</a>
 Originally used by M. Kulich and D.Y. Lin:
 Improving the efficiency of relative-risk estimation in case-cohort studies. J Amer Statis
 Assoc 99:832-844, 2004.

nwtsco: Dataset from the National Wilms Tumor Study (NWTS)

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