Evidence-based On-call

Stroke

Clinical features

A stroke is less likely with moderate alcohol consumption ^a

Why?

Moderate alcohol consumption reduces ischaemic stroke, but increases subarachnoid haemorrhage

Patient	Prognostic Factor	Outcome	CER	RR (95% CI)	NNF+ (95% CI)
female nurse ^a	1.5-4.9 g alcohol per day independent	ischaemic stroke at 10 years	0.08%	0.40 (0.20 to 0.90)	-2100 (-13 000 to -1600)
	5.0-14.9 g alcohol per day independent	ischaemic stroke at 10 years	0.08%	0.30 (0.10 to 0.70)	-1800 (-4200 to -1400)
	5.0-14.9 g alcohol per day independent	subarachnoid haemorrhage at 10 years	0.03%	3.70 (1.00 to 13.8)	1300 (280 to infinity)