Figure 3: Assessment of Chest Radiography quality in Lao PDR - Sum scores of pre- and post-training, Assessment scores of 4 items for density-(black diamond shape) Median sum of item scores Vertical straight line indicates the interquartile range of the sum of scores. LF: lung field, LP: lung periphery, ME: mediastinum, CS: cardiac shadow 1: Assessment point before the training course. 2: Assessment point after the training course. P-value by Wilcoxon matched pairs test. *P-value<0.05.