Table 2. DH mean and standard deviation of the groups in the different evaluation times periods, using the tactile stimulus.

Groups (n = 80)	Baseline	1st session	2nd session	3rd session	One-month follow-up
	M (± SD)/ [% of DH reduction or increase on intragroup assessment]
PLACEBO (n = 20)	5.65 (± 2.18) Aa [–]	5.30 (± 2.89) Aa [-6.19]	4.20 (± 2.75) Ba [-25.66]	4.15 (± 2.70) Ba [-26.54]	3.10 (± 2.63) Ba [-45.13]
CPP-ACPF (n = 20)	6.20 (± 1.79) Aa [–]	4.35 (± 2.28) Bab [-29.84]	3.75 (± 2.34) Ba [-39.52]	3.65 (± 2.50) Ba [-41.13]	2.80 (± 2.97) Bab [-54.84]
PBM (n = 20)	6.10 (± 2.17) Aa [–]	6.10 (± 2.17) Aac [0.00]	4.25 (± 2.97) Ba [-30.33]	3.50 (± 2.65) Bab [-42.62]	3.85 (± 2.48) Ba [-36.89]
CPP-ACPF +PBM (n = 20)	5.35 (± 2.87) Aa [–]	3.55 (± 3.68) Bb [-33.64]	2.85 (± 2.81) Ba [-46.73]	1.95 (± 2.58) Bb [-63.55]	1.60 (± 1.79) Bb [-70.09]

Different upper case letters represent significant intragroup statistical difference (p≤0.05); Different lowercase letters represent significant intergroup statistical difference (p≤0.05); p values calculated by the mixed ANOVA test and multiple comparisons tests with the Bonferroni post-hoc test