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<B> Previous:</B> <A NAME="tex2html65" HREF="node6.html">Stride Time Dynamics</A>





  
  

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<H3><A NAME="SECTION00030400000000000000">Statistical Methods</A></H3>





  
  

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<P>





  
  

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The nonparametric Kruskal-Wallis test was used to test for statistical





  
  

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differences among the three age groups. If this test showed significant





  
  

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differences, multiple Wilcoxon Rank Sum tests were





  
  

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performed to compare two groups at a time.  These nonparametric tests





  
  

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make no assumptions about the underlying distribution of the data





  
  

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being compared.  





  
  

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p <IMG WIDTH=10 HEIGHT=29 ALIGN=MIDDLE ALT="tex2html_wrap_inline326" SRC="img13.png"> .05 was used as the level for statistical





  
  

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significance





  
  

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in detecting





  
  

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univariate group differences.  Statistical analysis





  
  

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was performed using SAS software release 6.12 (Cary, North Carolina).





  
  

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Group results are reported as mean <IMG WIDTH=12 HEIGHT=27 ALIGN=MIDDLE ALT="tex2html_wrap_inline288" SRC="img6.png"> standard error.





  
  

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