Table 2

Sensitivity and specificity of conscious level and urinary continence in predicting good functional outcome at six months in the Lothian stroke register

	Numbers of patients		Probability of good outcome
	Alive/independent	Dead/dependent	Probability of good outcome
95% confidence interval in brackets.
Alert+continent	557	318	0.64
Drowsy+continent	4	17	0.19
Alert+incontinent	27	156	0.15
Drowsy+incontinent	5	103	0.05
Total	593	594
	Sensitivity	Specificity
Alert v not alert	0.98 (0.97 to 0.99)	0.20 (0.17 to 0.23)
Continent v incontinent	0.95 (0.92 to 0.96)	0.44 (0.40 to 0.48)
Alert+continent v other categories	0.94 (0.92 to 0.96)	0.46 (0.42 to 0.50)
Alert or continent v drowsy+incontinent	0.99 (0.98 to 1.00)	0.17 (0.14 to 0.20)