Multi-parametric effect in predicting tumor histological grade by using susceptibility weighted magnetic resonance imaging in tongue squamous cell carcinoma

Table 2 Comparison of single variables between low- and high-grade tumors

Variable	Low-grade	High-grade	P value	Z value
Mean ITSS score	0.95 ± 0.83	1.70 ± 0.95	0.036	−2.095
ITSS scores, n(%)	20(100%)	10(100%)
0	6(30%)	1(10%)
1	10(50%)	3(30%)
2	3(15%)	4(40%)
3	1(5%)	2(20%)
Tumor thickness(mm)	22.2 ± 13.4	21.4 ± 8.5	0.812
Ln [Tumor volume (cm³)]	1.5 ± 1.4	1.8 ± 0.7	0.5

ISSN: 1471-2342