Fig. 3From: Development and validation of an objective assessment scale for chest tube insertion under ‘direct’ and ‘indirect’ ratingVisualization of the results for intermethod reliability. In this graph the results for intermethod reliability are visualized using bland-altman plots. In particular the scores given by the one-site rater are presented in context with a ‘indirect rater 1’, b ‘indirect rater 2’, c ‘average indirect ratings’. Here, the x-axis represents the average of given points, whereas the y-axis represents the difference between scores. SD = standard deviationBack to article page