Expression and role of the long noncoding RNA Linc00909 in chemoradiotherapy for colorectal cancer

Table 1 Baseline characteristics of the 196 patients with colorectal cancer

Variable	Linc00909 expression		P value
	High (n = 98)	Low (n = 98)
Sex			0.770
Male	58 (59.18)	60 (61.22)
Female	40 (40.82)	38 (38.78)
Age, years	61.08 ± 12.08	60.60 ± 11.60	0.777
American Society of Anesthesiologists score			0.793
1	16 (16.33)	19 (19.39)
2	71 (72.45)	70 (71.43)
3	11 (11.22)	9 (9.18)
Tumor location			0.997
Ascending colon	15 (15.31)	15 (15.31)
Transverse colon	10 (10.20)	9 (9.18)
Descending colon	6 (6.12)	7 (7.14)
Sigmoid colon	21 (21.43)	20 (20.41)
Rectum	46 (46.94)	47 (47.96)
Gross type			0.125
Expanding	24 (24.49)	36 (36.73)
Ulcerating	73 (74.49)	61 (62.25)
Infiltrating	1 (1.02)	1 (1.02)
Histopathology			0.461
Adenocarcinoma	78 (79.59)	82 (83.67)
Mucinous adenocarcinoma	20 (20.41)	16 (16.33)
Tumor differentiation			0.902
Well differentiated	4 (4.08)	4 (4.08)
Moderately differentiated	70 (71.43)	74 (75.51)
Poorly differentiated	19 (19.39)	15 (15.31)
Undifferentiated	5 (5.10)	5 (5.10)
Postoperative hospital stay, days	9.11 ± 7.36	8.02 ± 6.80	0.282
Number of lymph nodes retrieved	22.57 ± 12.96	24.04 ± 15.35	0.470
Number of metastatic lymph nodes	1.70 ± 3.46	1.37 ± 2.98	0.466
Tumor size, cm	4.47 ± 2.22	4.20 ± 2.19	0.402
Pathological T stage			0.367
T1	7 (7.14)	5 (5.10)
T2	17 (17.35)	19 (19.39)
T3	60 (61.22)	67 (68.37)
T4	14 (14.29)	7 (7.14)
Pathological N stage			0.214
N0	53 (54.08)	65 (66.32)
N1	28 (28.57)	20 (20.41)
N2	17 (17.35)	13 (13.27)
Pathological M stage			< 0.001
M0	71 (72.45)	93 (94.90)
M1	27 (27.55)	5 (5.10)
Neural invasion			0.610
Yes	21 (21.43)	24 (24.49)
No	77 (78.57)	71 (75.51)
Vascular invasion			0.809
Yes	9 (9.18)	10 (10.20)
No	89 (90.82)	88 (89.80)

Values are presented as n (%) or mean ± SD. P values were calculated using the χ² test for categorical variables and Student’s t-test for continuous variables. Statistical significance was set at P < 0.05.