Fig. 5
Rate of Motor Disability Progression. The table lists the time elapsed to progress to each Osame Motor Disability Score (OMDS) both from onset of motor symptoms and from disease onset for the HAM/TSP patients enrolled in this study based on retrospective data. The corresponding graph illustrates the times starting from onset of motor symptoms. The boxes encompass the 25th–75th percentiles, the interquartile range (IQR), and the bars indicate the minimum and maximum values within 1.5 IQR of the box. Circles represent outliers beyond that range, and stars represent extreme outliers beyond 3 IQR. Importantly, the medians cease to increase linearly and begin to curve at around OMDS 9, suggesting variation in progression speeds. In the table, the values for OMDS 5, 6, and 9 are highlighted to emphasize those important time-points: need for unilateral support, bilateral support, and complete inability to walk, respectively