Fig. 1From: Factors associated with health-related quality of life in a large national sample of patients receiving opioid substitution treatment in Germany: A cross-sectional studyDistribution of the SF-12 Physical Component Summary score (PCS) compared with German general population norms. ECHO study sample (n = 2176) statistics: mean = 44.63, standard deviation = 9.75, range 11.04 – 64.08; skewness = -0.50, SE = 0.05; kurtosis = -0.56Back to article page