Predictive value of multi-slice spiral computed tomography tumor diameter and necrotic ratio for very high-risk gastrointestinal stromal tumors

Table 4 Multivariate logistic regression analysis of predictive factors for the very high-risk group of gastrointestinal stromal tumor

Variable	β	Standard error	Wald χ2	OR	95%CI for OR	P value
Palpable abdominal mass (yes vs no)	0.701	0.605	1.343	2.02	0.62-6.61	0.246
Asymptomatic (yes vs no)	-0.285	0.621	0.211	0.75	0.22-2.54	0.646
Hemoglobin (g/L)	-0.012	0.018	0.444	0.99	0.95-1.03	0.505
Platelet count (× 109/L)	0.005	0.003	1.852	1.01	1.00-1.01	0.173
NLR	0.298	0.180	2.741	1.35	0.95-1.92	0.098
Albumin (g/L)	-0.081	0.067	1.463	0.92	0.81-1.05	0.226
Tumor location (non-gastric vs gastric)	0.522	0.511	1.044	1.69	0.62-4.59	0.307
Maximum tumor diameter (cm)	0.265	0.080	10.984	1.30	1.11-1.52	0.001
NAR (%)	0.116	0.029	16.024	1.12	1.06-1.19	< 0.001
Growth pattern (mixed intra- and extraluminal vs no)	0.450	0.542	0.689	1.57	0.54-4.54	0.407
Irregular morphology (yes vs no)	0.655	0.591	1.229	1.93	0.61-6.13	0.268
Ill-defined margin (yes vs no)	0.612	0.545	1.262	1.84	0.63-5.36	0.261
Heterogeneous enhancement (yes vs no)	0.884	0.725	1.487	2.42	0.58-10.05	0.223
Marked enhancement (yes vs no)	0.331	0.481	0.474	1.39	0.54-3.57	0.491
Signs of adjacent organ invasion (yes vs no)	0.981	0.632	2.410	2.67	0.77-9.21	0.121
Constant	-9.856	2.345	17.656	-	-	< 0.001

NLR: Neutrophil-to-lymphocyte ratio; NAR: Necrotic area ratio; OR: Odds ratio; 95%CI: 95% confidence interval.