Fig. 5.
a–c Spearman rank correlations (rs) for men (rs, males) and women (rs, females) between oxycodone and noroxycodone, oxymorphone and noroxymorphone serum concentrations (rs = 0.59–0.79, p < 0.001) for the hospitalised patients
a–c Spearman rank correlations (rs) for men (rs, males) and women (rs, females) between oxycodone and noroxycodone, oxymorphone and noroxymorphone serum concentrations (rs = 0.59–0.79, p < 0.001) for the hospitalised patients