patient gender week1  week2 week5
   1   M      5        4     3
   2   M      1        0     0
   3   M      0        0     0
   4   M      4        2     1
   5   M      4        1     1
   6   F      5        3     2
   7   F      3        3     3
   8   F      3        1     0
   9   F      2        2     1
  10   F      4        1     1