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Tidy summarizes information about the components of a model. A model component might be a single term in a regression, a single hypothesis, a cluster, or a class. Exactly what tidy considers to be a model component varies across models but is usually self-evident. If a model has several distinct types of components, you will need to specify which components to return.


# S3 method for aareg
tidy(x, ...)



An aareg object returned from survival::aareg().


Additional arguments. Not used. Needed to match generic signature only. Cautionary note: Misspelled arguments will be absorbed in ..., where they will be ignored. If the misspelled argument has a default value, the default value will be used. For example, if you pass conf.lvel = 0.9, all computation will proceed using conf.level = 0.95. Two exceptions here are:

  • tidy() methods will warn when supplied an exponentiate argument if it will be ignored.

  • augment() methods will warn when supplied a newdata argument if it will be ignored.

Details is only present when x was created with dfbeta = TRUE.


A tibble::tibble() with columns:


The estimated value of the regression term.


The two-sided p-value associated with the observed statistic.

robust version of standard error estimate.


The value of a T-statistic to use in a hypothesis that the regression term is non-zero.


The standard error of the regression term.


The name of the regression term.


z score.


# load libraries for models and data

# fit model
afit <- aareg(
  Surv(time, status) ~ age + sex + ph.ecog,
  data = lung,
  dfbeta = TRUE

# summarize model fit with tidiers
#> # A tibble: 4 × 7
#>   term        estimate  statistic std.error statistic.z  p.value
#>   <chr>          <dbl>      <dbl>     <dbl>     <dbl>       <dbl>    <dbl>
#> 1 Intercept  0.00505    0.00587   0.00474   0.00477          1.23 0.219   
#> 2 age        0.0000401  0.0000715 0.0000723 0.0000700        1.02 0.307   
#> 3 sex       -0.00316   -0.00403   0.00122   0.00123         -3.28 0.00103 
#> 4 ph.ecog    0.00301    0.00367   0.00102   0.00102          3.62 0.000299