A cohort study investigating a simple, early assessment to predict upper extremity function after stroke - a part of the SALGOT study

Table 2 Sensitivity, specificity, predictive values, and likelihood ratios for ARAT-2 at the different assessments

	Day 3-10 days (CI)	Day 3-1 Month (CI)	Day 3-12 Months (CI)	1-12 Months (CI)
Sensitivity	0.98 (0.91-1.0)	1.00 (0.92-1.0)	1.00 (0.85-1.0)	1.00 (0.85-1.0)
Specificity	0.94 (0.84-0.99)	0.78 (0.64-0.87)	0.73 (0.58-0.84)	0.88 (0.76-0.96)
PPV	0.95 (0.86-0.99)	0.77 (0.65-0.88)	0.61 (0.44-0.77)	0.79 (0.59-0.92)
NPV	0.98 (0.90-1.0)	1.00 (0.92-1.0)	1.00 (0.91-1.0)	1.00 (0.92-1.0)
LR⁺	17.36 (6.40-50.60)	4.54 (2.93-7.49)	3.64 (2.44-5.84)	8.33 (4.20-17.80)
LR⁻	0.02 (0.00-0.096)	0.00 (0.00-0.10)	0.00 (0.00-0.21)	0.00 (0.00-0.17)

Abbreviations: CI, 95 % exact confidence interval; LR⁺, the positive likelihood ratio; LR⁻, the negative likelihood ratio; NPP, negative predictive value; PPV, positive predictive value

ISSN: 1471-2377