Table 4. Clinical Characteristics and the Median Survival Times (Months) in Fatal sCJD Cases.

	Number (%)	Median survival time (range)
Foremost symptoms
Progressive dementia	66 (68.8)	7.1 (1.0–22.4)
Cortical blindness	5 (5.2)	5.0 (2.0–16.2)
Psychiatric symptom	8 (8.3)	6.1 (1.0–20.3)
Cerebellum syndrome	9 (9.3)	5.0 (3.1–23.3)
Pyramidal and extrapyramidal symptoms	4 (4.2)	6.1 (5.0–13.2)
Others	4 (4.2)	3.1 (3.0–13.2)
P	–	0.571
The frequences of main clinical manifestation
having four clinical features	10 (10.4)	5.1 (1.0–20.3)
having three clinical features	34 (35.4)	7.1 (1.0–21.3)
having two clinical features	52 (54.2)	6.1 (1.0–23.3)
P	–	0.876