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Table 4: Wilcoxon rank sum test for longitudinal persistence of meningeal enhancement versus demographic and clinical factors^{^a}
On Treatment (n = 25) Not on Treatment (n = 6) Progressive MS (n = 10) Nonprogressive MS (n = 21) EDSS Progressor at 1 yr^{^b} (n = 7) EDSS Nonprogressor at 1 yr^{^b} (n = 24)
Total No. of overall foci persisting at 1 yr per subject 9 (1–24) 9 (1–15) 8 (1–24) 9 (1–15) 12 (1–15) 7.5 (1–24)^{^c}
Total No. of subarachnoid spread/fill foci persisting at 1 yr per subject 2 (0–9) 2 (0–6) 2 (0–9) 2 (0–9) 5 (1–9) 2 (0–9)
Total No. of subarachnoid nodular foci persisting at 1 yr per subject 0 (0–2) 0 (0–1) 0 (0–0) 0 (0–2)^{^c} 0 (0–0) 0 (0–2)
Total No. of vessel wall foci persisting at 1 yr per subject 3 (0–11) 3.5 (1–6) 2 (0–6) 3 (0–11) 3 (0–11) 3 (0–7)
Total No. of dural foci persisting at 1 yr per subject 1 (0–9) 1 (0–6) 1 (0–9) 1 (0–6) 1 (0–6) 1 (0–9)
↵a Median values are listed with the range of observed values in parentheses.
↵b Criteria for EDSS progressor status is listed in the “Materials and Methods” section.
↵c P < .05.