Validation of a German-language modified Rankin Scale structured telephone interview at 3 months in a real-life stroke cohort

Table 4 Analysis of Cohen’s Kappa for dichotomized modified Rankin scale values

Dichotomized mRS score	Kappa value, (95% CI)	p-Value	Strength of agreement	Identical scores
0 vs. 1–4	0.74 (0.60–0.88)	< 0,001	good	96/108 (88.9%)
0–1 vs. 2–4	0.80 (0.67–0.91)	< 0,001	good	98/108 (90.7%)
0–2 vs. 3–4	0.97 (0.92–1.03)	< 0,001	very good	107/108 (99.1%)
0–3 vs. 4	0.80 (0.41- 1.19)	< 0,001	good	107/108 (99.1%)

The analysis was performed for all possible points of dichotomization within the dataset. As none of the patients was scored as mRS = 5, an analysis of mRS 0–4 vs 5 could not be performed

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