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. 2018 Mar;10(3):1738–1746. doi: 10.21037/jtd.2018.02.61

Table 2. Relationship between the SUV max and patient characteristics*.

Factors SUVmax <4.5 [n (%)] SUVmax ≥4.5 [n (%)] P
Number 70 72
Age, years (mean ± SD) 65±12 67±13 0.467
Gender 0.726
   Male 39 (55.7) 38 (52.8)
   Female 31 (44.3) 34 (47.2)
Smoking 0.392
   Yes 43 (61.4) 38 (54.3)
   No 27 (38.6) 32 (45.7)
Serum CEA, ng/mL (mean ± SD) 4.1±7.4 4.0±8.3 0.928
Tumor size, cm (mean ± SD) 1.3±0.8 2.2±1.1 <0.001
DFI, months (mean ± SD) 29±50 34±45 0.507
Laterality 0.097
   Bilateral 10 (14.3) 4 (5.6)
   Unilateral 60 (85.7) 68 (94.4)
Number of tumors 0.215
   Multiple 22 (31.4) 16 (22.2)
   Single 48 (68.6) 56 (77.8)
Surgery <0.001
   Wedge 57 (81.4) 35 (48.6)
   Non-wedge 13 (18.6) 37 (51.4)
Curability 0.812
   Complete 64 (91.4) 65 (90.3)
   Incomplete 6 (8.6) 7 (9.7)
Primary site 0.089
   Colorectal 43 (61.4) 34 (47.2)
   Non-colorectal 27 (38.6) 38 (52.8)

*, chi-square test used for categorical data and unpaired t-test used for continuous data. SUV, standardized uptake value; SD, standard deviation; CEA, carcinoembryonic antigen; DFI, disease-free interval.