There was no statistically significant difference between the MNTX and placebo groups for the median ( IQR ) pruritus AUC scores -LSB- @ ( @-@ ) vs @ ( @-@ ) , median difference @ , @ % confidence interval ( CI ) @-@ , P = @ -RSB- or the worst pruritus score -LSB- @ ( @-@ ) vs @ ( @-@ ) , median difference @ , @ % CI @-@ , P = @ -RSB- .