Table 3.

Results of a per-protocol paired-sample t test analysis comparing pre (T1) and post (T2) measures.

Outcome	Intervention (n=38)				Control (n=23)
	T1, mean (SD)	T2, mean (SD)	P value	r a		T1, mean (SD)	T2, mean (SD)	P value	r
BPIb	4.18 (1.81)	3.98 (2.47)	.44	0.13		4.60 (2.00)	4.19 (2.05)	.28	0.23
DSFc	5.85 (1.57)	5.33 (1.70)	.009	0.42		5.88 (1.75)	5.42 (1.68)	.15	0.30
MFHWd	2.55 (1.10)	2.93 (1.11)	.02	0.37		2.50 (1.15)	2.54 (1.10)	.76	0.01

^ar: effect size.

^bBPI: Brief Pain Inventory.

^cDSF: Deutscher Schmerzfragebogen (German Pain Survey).

^dMFHW: Marbuger Fragebogen zum habituellen Wohlbefinden (Marburger Screening for Habitual Well-being).