Combining CT Images and Clinical Features of Four Periods to Predict Whether Patients Have Rectal Cancer

Table 3

Comparison for the characteristics between rectal cancer and non-rectal cancer groups.

Variables	Total (n = 196)	Non-rectal cancer (n = 129)	Rectal cancer (n = 67)	Statistics
Gender, n (%)				χ^2 = 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 (%)				χ^2 = 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 (%)				χ^2 = 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 (%)				χ^2 = 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 (%)				χ^2 = 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 (%)				χ^2 = 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