Supplementary Table 1. PET Or PET/CT Scan Findings and Clinical Characteristics, Stratified

Supplementary Table 1.PET or PET/CT scan findings and clinical characteristics, stratified by test site

Characteristic / Total, N(%) / MSKCC / Outside PET center / pvalue
N(%) / N(%)
All / 181 / 86(48) / 95(52)
Age, y, median (range) / 70 (29-89) / 69 (29-86) / 70 (47-89) / 0.082
<65 / 54(30) / 31(57) / 23(43)
≥65 / 127(70) / 55(43) / 72(57)
Sex / 0.749
Female / 120(66) / 56(47) / 64(53)
Male / 61(34) / 30(49) / 31(51)
Smoking / 0.351
Never / 22(12) / 9(41) / 13(59)
Former / 139(77) / 70(50) / 69(50)
Current / 20(11) / 7(35) / 13(65)
Tumor location / 0.831
RUL / 44(24) / 19(43) / 25(57)
RML / 4(2) / 1(25) / 3(75)
RLL / 42(23) / 21(50) / 21(50)
LUL / 52(29) / 25(48) / 27(52)
LLL / 39(22) / 20(51) / 19(49)
Surgical procedure / 0.504
Wedge resection / 124 (69) / 61(49) / 63(51)
Segmentectomy / 57 (31) / 25(44) / 32(56)
CT tumor size, mm, mean (range) / 1.4 (0.4-2.0) / 1.3 (0.5-2.0) / 1.4 (0.4-2.0) / 0.477
0-10 / 38(21) / 20(53) / 18(47)
11-20 / 143(79) / 66(46) / 77(54)
Pathologic tumor size, mm, mean (range) / 1.2 (0.4-5.0) / 1.3 (0.4-5.0) / 1.4 (0.4-3.0) / 0.027a
1-10 / 53(29) / 29(55) / 24(45)
11-20 / 111(61) / 54(49) / 57(51)
21-50 / 17(10) / 3(18) / 14(82)
C/T ratio / 0.121
<25% / 15(8) / 10(67) / 5(33)
≥25% / 166(92) / 76(46) / 90(54)
SUVmax / 0.797
Median (range) / 2.2 (0.6-16) / 2.2 (0.6-16) / 2.2 (0.6-13)
<2.2 / 86 (48) / 40(47) / 46(53)
≥2.2 / 95 (52) / 46(48) / 49(52)
Pathologic stage / 0.528
IA / 155(86) / 73(47) / 82(53)
IB / 19(10) / 11(58) / 8(42)
II / 6(3) / 2(33) / 4(67)
III / 1(1) / 0(0) / 1(100)

CT computed tomography, C/T consolidation/tumor,LLLleft lower lobe,LULleft upper lobe, MSKCC Memorial Sloan-Kettering Cancer Center, PET positron emission tomography, RLLright lower lobe, RMLright middle lobe, RULright upper lobe,SUVmax maximum standardized uptake value

aStatistically significant (p<0.05).