Fig. 1From: Work-related neck and upper limb disorders – quantitative exposure–response relationships adjusted for personal characteristics and psychosocial conditionsAssociation between the prevalence of tension neck syndrome and right trapezius muscle activity (90th percentile) calculated with Poisson regression. The symbols denote the prevalences with exact 95% confidence intervals, and the median exposures within sex-specific exposure quintiles in 2366 women and 920 menBack to article page