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Table 4 Predominant pain intensity from the masticatory system at three stages

From: Towards an optimal therapy strategy for myogenous TMD, physiotherapy compared with occlusal splint therapy in an RCT with therapy-and-patient-specific treatment durations

Pain intensity per therapy group:
Physiotherapy (n=37) Splint therapy (n=35)
Initial visit Start-Tx LM Initial visit Start-Tx LM
[mean (SD)] [mean (SD)]
60.4 (22.4) 41.0 (23.4) 19.2 (26.4) 53.6 (13.1) 39.1 (22.5) 11.5 (16.2)
Cohen’s d between stages, per therapy group:
  Physiotherapy Splint therapy
d Confidence interval (95%) d Confidence interval (95%)
Initial visit vs start-Tx 0.84 0.36–1.31 0.77 0.29–1.26
Start-Tx vs LM 0.86a 0.39–1.34 1.39a 0.87–1.92
Initial visit vs LM 1.66b 1.13–2.19 2.83b 2.17–3.49
  1. Top: mean pain intensity in mm on a 100 mm VAS and SD (between brackets) for predominant pain at three stages: initial visit, start of treatment (Start-Tx) and at the last post-treatment visit, last measurement (LM). Both therapy groups have a similar significant stage effect (p<0.0001; 2-way ANOVA, cf. Additional file 1: Table S6). All inter-stage differences are significant (p<0.0001-0.01) in Bonferroni’s multiple comparison tests
  2. Bottom: d, Cohen’s effect size based on pooled SD (d=(|mean2-mean1|)/SDpooled, in which ‘2’ refers to the later stage and ‘1’ to the earlier one), and bias corrected (Hedges). For the values of the means, see top. a,b significant differences of d between therapy groups as the means are mutually excluded from the confidence interval of the other therapy group