Radiomics model building from multiparametric MRI to predict Ki-67 expression in patients with primary central nervous system lymphomas: a multicenter study

Table 1 Baseline characteristics of participants in Low Proliferation Group and High Proliferation Group

Variable	Low proliferation group (n = 54)	High proliferation group (n = 29)	p
Age (y)^*	62 (55.3–67)	60 (52–66)	0.476
Sex (n, %)	29 (53.7)	15 (51.7)	0.863
Immunophenotype (n, %)			0.207
GCB	15 (27.8)	12 (41.3)
Non-GCB	39 (72.2)	17 (58.6)
PFS (m)^*	32.9 (27.4–40)	31 (25.5–35.5)	0.016
OS (m)^*	39 (33–43)	32.1 (28–39)	0.014

^* Data are medians, with IQRs in parentheses
Bold value indicates p < 0.05
PFS, progression-free survival; OS, overall survival; GCB, germinal center B cell-like

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