title: Breakpoints (strucchange package)
body: <p>I was wondering if the breakpoints given by the package (strucchange) are corresponding to :
  the end of a period, or the beginning of a new one ?
  For instance, I have found a breakdate=2003. I assumed that it was the start of the second period, however, when I have integrated 2003 in the regression, I found a better R² than when I included 2003 in the second period.
  Thanks</p>