Table 1

Sensitivity, specificity, and accuracy of the modified simple questions in predicting patients' responses to more complex measures (Lothian Stroke Register cohort)

		“Do you need help from anybody with everyday activities?”			“Has the stroke left you with any problems”
		Sensitivity (%)	Specificity (%)		Accuracy (%)	Sensitivity (%)	Specificity (%)	Accuracy (%)
OPCS locomotion (>0)^1-150	72	95	84	84	49	65
Barthel index
(<20)	85	85	85	87	42	56
(<18)	91	79	82	85	38	49
Frenchay activities index:
(>34)	100	42	49	65	72	71
(<22)	67	90	79	77	42	59
(<17)	77	88	84	81	41	56
Visual analogue pain scale (>0)^1-150	52	73	64	70	36	50
HADS depression subscale (<7)^1-150	60	71	67	88	42	56
HADS anxiety subscale (<7)^1-150	50	70	61	83	46	62
Problems on any single measure^1-151	—	—	—	75	63	79

↵1-150 Low scores indicate better outcome.
↵1-151 Problems were defined using above cut offs (<17 for Frenchay activities index and <18 for Barthel index).