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Table 3: Inter- and intraobserver variation for PVS scores^{^a}
Modified Scheltens Score PVS-1 PVS-2 PVS-2_BG
Interobserver Agreement 
    Rater 1 vs 2 0.82 0.79 0.92 0.91
    Rater 1 vs 3 0.91 0.84 0.89 0.86
    Rater 2 vs 3 0.88 0.82 0.83 0.90
Intraobserver agreement 
    Rater 1 0.82 0.87 0.92 0.90
    Rater 2 0.86 0.96 0.84 0.86
↵a Data represent weighted Cohen κ statistics. All ratings were very good, except 0.70, which as good.

	Modified Scheltens Score	PVS-1	PVS-2	PVS-2_BG
Interobserver Agreement
Rater 1 vs 2	0.82	0.79	0.92	0.91
Rater 1 vs 3	0.91	0.84	0.89	0.86
Rater 2 vs 3	0.88	0.82	0.83	0.90
Intraobserver agreement
Rater 1	0.82	0.87	0.92	0.90
Rater 2	0.86	0.96	0.84	0.86