Fig. 2From: 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 Mental Component Summary score (MCS) compared with German general population norms. ECHO study sample (n = 2176) statistics: mean = 41.76, standard deviation = 11.40, range 10.83 – 69.06; skewness = -0.18, SE = 0.05; kurtosis = -0.95Back to article page