Fig. 2.
Postoperative patient abdominal pain scores and opiate use. A: summary bar graph indicating mean (±SE) maximum postoperative abdominal pain scores reported by patients (0–10 scale; 0 = none and 10 = most severe), comparing homozygous carriers of the NaV1.8 A1073V gene (AA) and heterozygous and homozygous wild-type (AG & GG). B: summary bar graph comparing mean opiate use (morphine equivalent, in mg) 24 h postoperatively in homozygous mutant carriers (GG) with that in both homozygous wild-type and heterozygous carriers (AG & GG). Numbers in parenthesis indicate the number of patients tested.