Number of analgesics within 7 post-operative days Number of analgesics within 7post-operative days Number of analgesics within 7 post-operative days Number of analgesics within 7 post-operative days Number of analgesics within 7 post-operative days Number of analgesics within 7 post-operative days  
  Group A/B 1 2 3 4 5 6 Row
Count A 2 2 7 8 5 0 24
Row%   8% 8% 29% 33% 21% 0%  
Count B 0 2 9 8 4 1 24
Row%   0% 8% 38% 33% 17% 4%  
Count All groups 2 4 16 16 9 1 48
P=0.74; Wilcoxon-Mann-Whitney test
Table 4: Quantity of different analgesics by group.