Fig. 3.
Cumulative proportion of responder’s analysis with area under the curve of the percentage change in mechanical pain threshold in secondary hyperalgesia (AUC%MPTt0-t3h >0; %.min) in dextromethorphan and placebo groups. A statistically significant proportion of responders (P < 0.001) was observed, more precisely at AUC %MPTt0-t3h level 0 P = 0.003 and level 1,000 P = 0.011. P values were estimated applying a Sidak’s correction type I error.