The Efficacy of Thai Herbal Prasaplai Formula for Treatment of Primary Dysmenorrhea: A Short-Term Randomized Controlled Trial

Table 2

Mean difference in pain scores before and after treatment between Thai herbal Prasaplai formula (PPF) and placebo groups.

Day; (before and after treatment)	Pain score by NRS; Mean difference ± SD		value
	PPF; ()	Placebo; ()
Pretreatment	0.25 ± 1.11	0.20 ± 1.43	0.903
Day 1-day 2	2.11 ± 3.08	1.35 ± 1.82	0.315
Day 2-day 3	1.75 ± 1.64	1.83 ± 2.07	0.903
Day 1–day 3	3.86 ± 3.07	3.18 ± 2.57	0.460

Data are expressed in mean ± SD.
NRS: Numeric Rating Scores.