Independent external validation of a stroke recurrence score in patients with embolic stroke of undetermined source

Table 3 Cox regression models on the score variables with the integer score value or the prognostic index as an offset

Variable	Beta (SE)	HR (95% CI)	p values
Integer score value as an offset Joint test (ANOVA): χ² = 120, p < 0.001
Age_{decades after 35}	− 1.02 (0.15)	0.36 (0.27–0.48)	< 0.001
WMH	− 1.37 (0.49)	0.26 (0.10–0.67)	0.006
Multiterritorial infarcts	− 1.56 (0.42)	0.21 (0.09–0.48)	< 0.001
Prognostic index as an offset Joint test (ANOVA): χ² = 7.34, p = 0.06
Age_{decades after 35}	− 0.33 (0.15)	0.72 (0.54–0.96)	0.024
WMH	− 0.002 (0.49)	1.00 (0.38–2.62)	0.997
Multiterritorial infarcts	0.53 (0.42)	1.70 (0.74–3.91)	0.219

The prognostic index is calculated with the unrounded coefficients from the original model. A coefficient of zero indicates an optimal fit. A joint test (ANOVA) was conducted to evaluate the significance of deviations from zero
SE standard error, HR, hazard ratio, ANOVA analysis of variance, WMH white matter hyperintensities

ISSN: 2524-3489