Table 1. Baseline data - mean and standard deviation of the survey components.

	Baseline data		Norm data	Maximum score
	n	Mean ± SD	Mean ± SD	Absolute value
RPS	768	3.84 ± 2.98	n/a; for sites of injuries see Fett et al., 2017	0 (sites of pain) Häuser et al., 2010
PCS-12	741	48.88 ± 6.59	56.62 ± 6.20 (age control) Nübling, 2006	100 (highest level of health) Utah Department of Health, 2001
MCS-12	741	47.64 ± 9.51	50.03 ± 9.37 (age control) Nübling, 2006	100 (highest level of health) Utah Department of Health, 2001
NRS pain intensity	736	1.83 ± 1.93	3 (clinically relevant cut off) Schmidt, 2016	0 (no pain) Schmidt, 2016
QLIP	721	31.98 ± 6.54	≤ 20 Überall et al., 2015 ≥ 32 back pain patients Überall et al., 2017	43 (no impairment) Nagel et al., 2012
DASS-D	687	3.20 ± 3.55	10 (clinically relevant cut off) Nagel et al., 2012	0 (no risk) Nagel et al., 2012
DASS-A	687	1.87 ± 2.45	6 (clinically relevant cut off) Nagel et al., 2012	0 (no risk) Nagel et al., 2012
DASS-S	687	3.79 ± 3.67	10 (clinically relevant cut off) Nagel et al., 2012	0 (no risk) Nagel et al., 2012
SCS-D SF	664	38.40 ± 7.35	46.76 ± 11.64 Raes et al., 2011	60 (excellent self-compassion) Raes et al., 2011

RPS Regional Pain Scale; PCS-12 Physical Component Summary of the SF-12 Short Form 12 Health Survey; MCS-12 Mental Component Summary of the SF-12; NRS Numerical Rating Scale; QLIP Quality of Live Impairment by Pain; DASS-D/-A/-S Depression, Anxiety and Stress Scales-Depression/-Anxiety/-Stress; SCS-D SF Self-Compassion Scale Short Form.