The @-by-@ mixed-model ANOVA also revealed a significant time-by-group interaction ( P < @ ) for PPT : patients who received TrP DN experienced a greater increase in PPT ( decreased pressure sensitivity ) than those who received TrP MT at all follow-up periods ( between-group differences : posttreatment , @ kPa ; @ % confidence interval -LSB- CI -RSB- : @ , @ ; @-week follow-up , @ kPa ; @ % CI : @ , @ ; @-week follow-up , @ kPa ; @ % CI : @ , @ ) .