Comparison of dynamic contrast-enhanced-magnetic resonance imaging parameters and serum markers in preoperative rectal cancer evaluation: Combined diagnostic value

Table 1 Comparison of demographic and clinical characteristics among rectal cancer patients by T stage, mean ± SD/n (%)

Group	Early-stage group (n = 72)	Late-stage group (n = 54)	t/χ²	P value
Age (year)	58.25 ± 10.32	59.46 ± 11.24	0.629	0.531
Sex			0.382	0.537
Male	42 (58.33)	29 (53.70)
Female	30 (41.67)	25 (46.30)
BMI (kg/m²)	23.45 ± 3.21	23.82 ± 3.15	0.643	0.521
KPS score	85.62 ± 7.85	84.93 ± 8.12	0.483	0.630
Smoke			0.295	0.587
Yes	31 (43.06)	26 (48.15)
No	41 (56.94)	28 (51.85)
Alcohol			0.428	0.513
Yes	28 (38.89)	24 (44.44)
No	44 (61.11)	30 (55.56)
Hypertension			0.317	0.573
Yes	25 (34.72)	22 (40.74)
No	47 (65.28)	32 (59.26)
Diabetes			0.394	0.530
Yes	18 (25.00)	16 (29.63)
No	54 (75.00)	38 (70.37)
Family history			0.273	0.601
Yes	12 (16.67)	11 (20.37)
No	60 (83.33)	43 (79.63)
Tumor location			0.518	0.772
Upper section	24 (33.33)	16 (29.63)
Middle section	28 (38.89)	24 (44.44)
Lower section	20 (27.78)	14 (25.93)
Differentiation degree			1.386	0.239
Low differentiation	25 (34.72)	24 (44.44)
Medium to high differentiation	47 (65.28)	30 (55.56)

BMI: Body mass index; KPS: Karnofsky performance status.