Magnetic resonance imaging-based lymph node radiomics for predicting the metastasis of evaluable lymph nodes in rectal cancer

Table 3 Risk factors of lymph node metastasis in lymph nodes

Intercept and variable	Conventional MRI model			Nomogram model
	Coefficient	Odds ratio (95%CI)	P value	Coefficient	Odds ratio (95%CI)	P value
Intercept	-6.429	0.002 (0.001, 0.012)	< 0.001	-4.270	0.014 (0.001, 0.113)	< 0.001
Short axis	0.478	1.612 (0.962, 2.745)	0.072	0.088	1.092 (0.650, 1.845)	0.739
Long-axis	0.009	1.010 (0.679, 1.520)	0.963	0.178	1.194 (0.794, 1.806)	0.394
Margin	1.431	4.184 (1.831, 10.105)	0.001	1.278	3.588 (1.592, 8.443)	0.003
T2WI heterogeneous signal	0.309	1.362 (0.586, 3.120)	0.467	0.556	1.744 (0.793, 3.856)	0.166
Patterns of enhancement	2.042	7.709 (3.200, 20.561)	< 0.001	1.477	4.380 (2.004, 9.983)	< 0.001
Radiomics score	NA	NA	NA	0.839	2.314 (1.795, 3.086)	< 0.001

Data are results of the multivariable regression analysis. The conventional magnetic resonance imaging model was developed based on independent factors of lymph node metastasis without the addition of radiomics signature. CI: Confidence interval; MRI: Magnetic resonance imaging; NA: Not available.