By the ROC analysis in TRA group , a level of BMI < @ kg/m@ predicted unacceptable pain with a @ % sensitivity and @ % specificity -LSB- area under curve ( AUC ) : @ , @ % CI : @-@ @ , p < @ -RSB- , while a wrist circumference < @ cm predicted unacceptable pain with @ % sensitivity and @ % specificity ( AUC : @ , @ % CI : @-@ @ , p < @ ) .