Table 2. Demographics and clinical characteristics of HAM/TSP patients (Training Set).

	Total	Stable HAM/TSP	Deteriorating HAM/TSP
	n = 30	n = 14	n = 11	p-value*
Demographics
Age, y**	58 [37–75]	54.5 [39–75]	62 [53–72]	0.0183†
Female sex	80.0%	64.3%	90.9%	0.1696‡
Clinical characteristics
Age of onset, y**	48 [20–70]	33 [20–58]	57 [40–70]	0.0021†
Disease duration, y**	12.5 [1–33]	19 [7–33]	9 [1–13]	0.0021†
OMDS**	6 [2–11]	5 [2–9]	8 [5–11]	0.0065†

In the Training set, deteriorating patients were significantly older, experienced disease onset later in life, had been living with the disease for shorter periods, and were more severely disabled (OMDS).

^*Stable HAM/TSP vs Deteriorating HAM/TSP.

^**Data are expressed as median [range].

^†By Mann-Whitney test.

^‡By Fisher's exact test.

OMDS = Osame's Motor Disability Score.