title: Restricted Cubic Spline output in R rms package after cph
body: <p>I am developing a COX regression model in R.<br>
  The model I am currently using is as follows   </p>
  
  <pre><code>fh &lt;- cph(S ~ rcs(MPV,4) + rcs(age,3) + BMI + smoking + hyperten + gender +
      rcs(FVCPP,3) + TLcoPP, x=TRUE, y=TRUE, surv=TRUE, time.inc=2*52) 
  </code></pre>
  
  <p>If I then want to look at this with</p>
  
  <pre><code>print(fh, latex = TRUE) 
  </code></pre>
  
  <p>I get 3 <code>coefs/SE/Wald</code> etc for <code>MPV (MVP, MVP' and MVP'')</code> and 2 for <code>age (age, age')</code>.<br>
  Could someone please explain to me what these outputs are? i.e. I believe they are to do with the restricted cubic splines I have added.  </p>