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.