Characteristics Time of evolution until wheelchair 25% (133.9) 50% (267.8) Qui-square (Logrank) 75% ( 407.8) p
Neuropathic pain
No
Yes 		132.9
137.9 		267.8
- 		373.3
- 		0.38 0.530
Hypertension
No
Yes 		143.0
131.86 		267.8
197.9 		407.8
- 		0.62 0.430
Diabetes
No
Yes 		133.9
47.7 		267.8
170.4 		407.8
- 		1.14 0.280
Spasticity
No
Yes 		328.7
124.7 		346.9
243.5 		346.9
407.8 		5.53 0.010
Limited in lower limbs
No
Yes 		146.1
40.53 		328.7
216.1 		-
316.5 		6.05 0.010
Level of neurological
lesion
Cervical
Thoracic
Lumbosacral 		183.7
143.0
131.9 		316.5
179.5
328.7 		407.8
346.9
- 		9.0 0.020
Spinal Cord MRI
No
Yes 		117.7
121.7 		253.6
243.5 		357.06
373.3 		0.14 0.700
Use support ≤ 1 year
No
Yes 		151.2
89.3 		298.3
245.5 		407.8
- 		2.08 0.140
Use support ≤ 3 years
No
Yes 		161.3
111.6 		328.7
197.8 		407.8
267.8 		9.63 0.001
Table 3: Evolution in months of gait disability as per clinical characteristics, magnetic resonance imaging and use of support for walking, in 206 patients with HAM/TSP, admitted to the Belo Horizonte Sarah Hospital from January/1998 to December/2007.