Table 3. Comparison of variables between the local control and local failure groups.

	Local control	Local failure	P value	Odds ratio
Hb (g/dL)	14±2.1	13.7±2.8	0.69*
Tumor site
Hypopharynx	17	12	0.04†	0.30
Oropharynx	24	5
T stage
T1-T2	12	3	0.51†
T3-T4	29	14
GTV (mL)	36±31.9	35.5±23.5	0.96*
SUV (g/mL)	14.2±6	15.5±4.7	0.45*
MTV (mL)	27.2±24.6	27.2±16.2	0.99*
TLG (g)	168.4±173.8	171.3±116	0.95*
Ktrans (min-1)	0.7±0.3	0.5±0.3	0.01*	0.06
Vp×103	0.04±0.1	0.13±0.3	0.20*
Ve	0.3±0.2	0.2±0.1	0.10*
Kep (min-1)	4.2±3.4	3.2±2.2	0.30*
ADC(×10-3mm2/s)	1±0.2	1±0.1	0.77*

Abbreviations: GTV = gross tumor volume; SUV = standardized uptake value; MTV = metabolic tumor volume; TLG = total lesion glycolysis; ADC = apparent diffusion coefficient*Independent Student’s t-test ^†Pearson’s chi-square test