FDG PET using SUVmax for preoperative T-staging of esophageal squamous cell carcinoma with and without neoadjuvant chemoradiotherapy

Table 2 Multivariate analysis of the pathological T-stage

Parameter	Coefficient	95% confidence interval	p Value
CRT ^[−] group
Age	0.066	−0.047 ~ 0.179	0.253
Tumor location^a	0.748	−1.114 ~ 2.611	0.431
Tumor grade^b	2.139	−1.393 ~ 5.671	0.235
Tumor size	0.715	0.038 ~ 1.392	0.038*
Tumor SUV_max	0.894	0.400 ~ 1.389	<0.001*
CRT ^[+] group
Age	−0.027	−0.108 ~ 0.053	0.504
Tumor location^a	0.756	−0.955 ~ 2.468	0.386
Tumor grade^b	−1.661	−3.814 ~ 0.493	0.131
Tumor size	0.206	−0.425 ~ 0.837	0.523
Tumor SUV_max	1.111	0.530 ~ 1.692	<0.001*

^aLower vs. Upper + Middle
^bGrade 3 vs. Grade 1 + 2. Tumor histological grade was not assessment in patients with resected tumor specimens classified as T0
*Statistically significant
CRT chemoradiotherapy, SUV _max maximal standardized uptake value

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