forward-p.md
In blorr: Tools for Developing Binary Logistic Regression Models

output from forward variable p selection is as expected

Code
  blr_step_p_forward(model)
Output
  Forward Selection Method    
  ---------------------------

  Candidate Terms:

  1. female 
  2. read 
  3. science

  We are selecting variables based on p value...

  Variables Entered:

  - read 
  - female 
  - science


  Final Model Output 
  ------------------

  - Creating model overview. 
  - Creating response profile. 
  - Extracting maximum likelihood estimates. 
  - Estimating concordant and discordant pairs. 
                               Model Overview                              
  ------------------------------------------------------------------------
  Data Set    Resp Var    Obs.    Df. Model    Df. Residual    Convergence 
  ------------------------------------------------------------------------
    data      honcomp     200        199           196            TRUE     
  ------------------------------------------------------------------------

                      Response Summary                     
  --------------------------------------------------------
  Outcome        Frequency        Outcome        Frequency 
  --------------------------------------------------------
     0              147              1              53     
  --------------------------------------------------------

                    Maximum Likelihood Estimates                    
  -----------------------------------------------------------------
   Parameter     DF    Estimate    Std. Error    z value    Pr(>|z|) 
  -----------------------------------------------------------------
  (Intercept)    1     -12.7772       1.9755    -6.4677      0.0000 
     read        1      0.1035        0.0258     4.0186       1e-04 
    female1      1      1.4825        0.4474     3.3139       9e-04 
    science      1      0.0948        0.0305     3.1129      0.0019 
  -----------------------------------------------------------------

   Association of Predicted Probabilities and Observed Responses  
  ---------------------------------------------------------------
  % Concordant          0.8561          Somers' D        0.7147   
  % Discordant          0.1425          Gamma            0.7136   
  % Tied                0.0014          Tau-a            0.2794   
  Pairs                  7791           c                0.8568   
  ---------------------------------------------------------------


                   Selection Summary                   
  ----------------------------------------------------
          Variable                                        
  Step    Entered       AIC         BIC       Deviance    
  ----------------------------------------------------
     1    read        183.0630    189.6596    179.0630    
     2    female      176.8874    186.7824    170.8874    
     3    science     168.2364    181.4296    160.2364    
  ----------------------------------------------------