Prognosis

Look for the following prognostic factors, and sum the score.

Prognostic factors a	Score
frank bleeding	2
focal neurological signs	1
aged 60 or more	1
preadmission antibiotics	-1

Why?

A clinical prediction rule can help identify patients with meningococcal disease at risk of dying. ^a 

Patient	Outcome	% (95% CI)	NNF (95% CI)
proven meningococcal disease a	death at 7 days	6.0% (3.2% to 8.8%)	17 (11 to 31)
score 2 or more	death at 7 days	80% (55% to 100%)	1 (1 to 2)
score 1	death at 7 days	30% (9.9% to 50%)	3 (2 to 10)
score 0	death at 7 days	1.9% (0.0% to 4.0%)	53 (25 to infinity)
score -1	death at 7 days	0.0% (0.0% to 1.1%)	- (91 to infinity)