Start 4 weeks 8 weeks 12 weeks
Single   n % n % n % n %
treatment Yes 0 0 0 0 0 0 0 0
  No 11 100 11 100 11 100 11 100
  Total 11 100 11 100 11 100 11 100
Combined   n % n % n % n %
treatment Yes 1 5 1 5.3 1 5.9 0 0
  No 19 95 18 94.7 16 94.1 17 100
p-value 0.3442 0.334 0.3121
Table 8: Objective findings [Comparison between groups using the χ2 test].