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

Table 2 Comparison of general information of rectal cancer patients, mean ± SD/n (%)

Group	Early-stage group (n = 49)	Late-stage group (n = 77)	t/χ²	P value
Age (year)	58.92 ± 10.85	58.63 ± 10.68	0.147	0.883
Sex			0.286	0.593
Male	29 (59.18)	42 (54.55)
Female	20 (40.82)	35 (45.45)
BMI (kg/m²)	23.56 ± 3.18	23.64 ± 3.20	0.138	0.891
KPS score	85.12 ± 8.02	85.48 ± 7.92	0.252	0.801
Smoke			0.317	0.573
Yes	24 (48.98)	33 (42.86)
No	25 (51.02)	44 (57.14)
Alcohol			0.394	0.530
Yes	22 (44.90)	30 (38.96)
No	27 (55.10)	47 (61.04)
Hypertension			0.273	0.601
Yes	19 (38.78)	28 (36.36)
No	30 (61.22)	49 (63.64)
Hypertension			0.328	0.567
Yes	14 (28.57)	20 (25.97)
No	35 (71.43)	57 (74.03)
Family history			0.295	0.587
Yes	10 (20.41)	13 (16.88)
No	39 (79.59)	64 (83.12)
Tumor location			0.482	0.786
Upper section	15 (30.61)	25 (32.47)
Middle section	21 (42.86)	31 (40.26)
Lower section	13 (26.53)	21 (27.27)

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