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. 2017 May 19;8(39):65171–65185. doi: 10.18632/oncotarget.18015

Table 1. Patients and tumor characteristics.

Variable Total no. of cases (% of total) Supraclavicular nodes Upper abdominal nodes
No. of positive (% of total) No. of negative (% of total) χ2 P value No. of positive (% of total) No. of negative (% of total) χ2 P value
Sex 1.434 0.231 2.928 0.087
  Male 234 (79.9) 143 (82.2) 91 (76.5) 100 (84.7) 134 (76.6)
 Female 59 (20.1) 31 (17.8) 28 (23.5) 18 (15.3) 41 (23.4)
Age 1.007 0.316 0.136 0.712
 ≥70 113 (38.6) 63 (36.2) 50 (42) 44 (37.3) 69 (39.4)
 <70 180 (61.4) 111 (63.8) 69 (58) 74 (62.7) 106 (60.6)
Tumor location 7.216 0.027* 0.562 0.755
 Upper 100 (34.1) 70 (40.2) 30 (25.2) 43 (36.4) 57 (32.6)
 Middle 108 (36.9) 57 (32.8) 51 (42.9) 43 (36.4) 65 (37.1)
 Lower 85 (29) 47 (27) 38 (31.9) 32 (27.1) 53 (30.3)
T stage 5.013 0.082 4.571 0.102
 T1-2 40 (13.7) 15 (8.6) 20 (16.8) 10 (8.5) 30 (17.1)
 T3 115 (39.2) 78 (44.8) 44 (37) 48 (40.7) 67 (38.3)
 T4 138 (47.1) 81 (46.6) 55 (46.2) 60 (50.8) 78 (44.6)
N stage 1.067 0.587 3.432 0.18
 N1 65 (22.2) 35 (20.1) 30 (25.2) 20 (16.9) 45 (25.7)
 N2 121 (41.3) 74 (42.5) 47 (39.5) 50 (42.4) 71 (40.6)
 N3 107 (36.5) 65 (37.4) 42 (35.3) 48 (40.7) 59 (33.7)
TNM stage 2.245 0.325 5.615 0.06
 II 14 (4.8) 6 (3.4) 8 (6.7) 3 (2.5) 11 (6.3)
 III 248 (84.6) 148 (85.1) 101 (84.9) 107 (90.7) 141 (80.6)
 IV 31 (10.6) 20 (11.5) 10 (8.4) 8 (6.8) 23 (13.1)
Supraclavicular nodes 283 0.000*** 0.793 0.373
 Positive 174 (59.4) 174 (100) 0 (0) 66 (55.9) 101 (61.2)
 Negative 119 (40.6) 0 (0) 119 (100) 52 (44.1) 64 (38.8)
Upper abdominal nodes 0.793 0.373 283 0.000***
 Positive 118 (40.3) 66 (39.5) 52 (44.8) 118 (100) 0 (0)
 Negative 175 (59.7) 101 (60.5) 64 (55.2) 0 (0) 175 (100)
Treatment modality 0.018 0.892 3.288 0.07
 Chemoradiotherapy 213 (72.7) 127 (73) 86 (72.3) 79 (66.9) 134 (76.6)
 Radiotherapy alone 80 (27.3) 47 (27) 33 (27.7) 39 (33.1) 41 (23.4)
Radiation dose 1.794 0.18 4.529 0.033*
 ≥60 Gy 166 (56.7) 93 (53.4) 73 (61.3) 58 (49.2) 108 (61.7)
 <60 Gy 127 (43.3) 81 (46.6) 46 (38.7) 60 (50.8) 67 (38.3)

*, P < 0.05; **, P < 0.01; ***, P < 0.001.