| Variables | Total (n = 196) | Non-rectal cancer (n = 129) | Rectal cancer (n = 67) | Statistics | |
| Gender, n (%) | | | | χ2 = 9.957 | 0.002 | Male | 110 (56.12) | 62 (48.06) | 48 (71.64) | | | Female | 86 (43.88) | 67 (51.94) | 19 (28.36) | | | Past history of hypertension, n (%) | | | | χ2 = 0.905 | 0.341 | No | 99 (50.51) | 62 (48.06) | 37 (55.22) | | | Yes | 97 (49.49) | 67 (51.94) | 30 (44.78) | | | Past history of diabetes, n (%) | | | | χ2 = 6.667 | 0.010 | No | 138 (70.41) | 83 (64.34) | 55 (82.09) | | | Yes | 58 (29.59) | 46 (35.66) | 12 (17.91) | | | Family cancer history, n (%) | | | | χ2 = 27.476 | <0.001 | No | 180 (91.84) | 128 (99.22) | 52 (77.61) | | | Yes | 16 (8.16) | 1 (0.78) | 15 (22.39) | | | History of intestinal inflammatory diseases, n (%) | | | | Fisher | 0.548 | No | 194 (98.98) | 127 (98.45) | 67 (100.00) | | | Yes | 2 (1.02) | 2 (1.55) | 0 (0.00) | | | Smoking history, n (%) | | | | χ2 = 1.384 | 0.501 | Never smoking | 121 (61.73) | 81 (62.79) | 40 (59.70) | | | Smoking | 62 (31.63) | 38 (29.46) | 24 (35.82) | | | Quit smoking | 13 (6.63) | 10 (7.75) | 3 (4.48) | | | Drinking history, n (%) | | | | Fisher | 0.044 | Never drinking | 154 (78.57) | 107 (82.95) | 47 (70.15) | | | Drinking | 37 (18.88) | 18 (13.95) | 19 (28.36) | | | Quit drinking | 5 (2.55) | 4 (3.10) | 1 (1.49) | | | Hemoglobin, mean ± SD | 125.71 ± 28.25 | 124.85 ± 29.84 | 127.36 ± 25.05 | t = −0.59 | 0.557 | Total cholesterol, mean ± SD | 4.50 ± 1.27 | 4.54 ± 1.34 | 4.42 ± 1.12 | t = 0.63 | 0.530 | Triglycerides, M (Q1, Q3) | 1.29 (0.97, 1.70) | 1.35 (0.96, 1.86) | 1.21 (1.00, 1.56) | Z = −1.424 | 0.154 | Low density lipoprotein, M (Q1, Q3) | 2.89 (2.32, 3.56) | 2.90 (2.26, 3.52) | 2.88 (2.38, 3.56) | Z = 0.451 | 0.652 | High density lipoprotein, M (Q1, Q3) | 1.04 (0.86, 1.26) | 1.02 (0.81, 1.22) | 1.10 (0.91, 1.26) | Z = 1.499 | 0.134 | Fecal occult blood test, n (%) | | | | χ2 = 117.152 | <0.001 | No | 120 (61.22) | 114 (88.37) | 6 (8.96) | | | Yes | 76 (38.78) | 15 (11.63) | 61 (91.04) | | | Carcinoembryonic antigen, M (Q1, Q3) | 2.66 (1.88, 5.17) | 2.45 (1.71, 3.93) | 4.71 (2.54, 20.24) | Z = 5.515 | <0.001 | Alpha-fetoprotein, M (Q1, Q3) | 2.51 (1.88, 3.70) | 2.44 (1.77, 3.68) | 2.73 (2.04, 3.74) | Z = 1.006 | 0.314 | Saccharide antigen 199, M (Q1, Q3) | 11.28 (2.81, 23.14) | 9.30 (0.97, 17.38) | 19.85 (6.57, 58.40) | Z = 4.294 | <0.001 |
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