The effect of primary tumor radiotherapy in patients with Unresectable stage IV Rectal or Rectosigmoid Cancer: a propensity score matching analysis for survival

Table 3 Clinicopathological features between the two groups after propensity score matching

Variable	Primary Tumor Radiotherapy				Standardized difference	P value
	No (91)		Yes (91)
	Number	%	Number	%
Age					0.0224	1.0000
< 60 years	43	47.3	44	48.4
≥ 60 years	48	52.7	47	51.6
KPS						0.1700
70	14	15.4	32	35.2	0.4674
80	65	71.4	42	46.2	0.5313
90	12	13.2	14	15.4	0.0628
100	0	0.0	3	3.3	0.2611
T Stage						0.1156
T2	10	11.0	5	5.5	0.2008
T3	43	47.3	56	61.5	0.2898
T4	38	41.8	30	33	0.1825
N Stage						0.1250
N0	10	11.0	15	16.5	0.1601
N1	44	48.4	29	31.9	0.3412
N2	25	27.5	38	41.8	0.3037
N+	9	9.9	7	7.7	0.0777
Nx	3	3.3	2	2.2	0.0673
M Stage						0.9395
M1a	50	54.9	50	54.9	0.0000
M1b	37	40.7	36	39.6	0.0224
M1c	4	4.4	5	5.5	0.0507
Differentiation						0.3212
Well	7	7.7	6	6.6	0.0427
Moderate	53	58.2	52	57.1	0.0222
Poor	28	30.8	33	36.3	0.1166
Unknown	3	3.3	0	0	0.2611
Chemotherapy Cycles						0.0940
4	20	22.0	25	27.5	0.1276
5	5	3.3	0	0	0.2611
6	22	24.2	19	20.9	0.0790
8	20	22.0	14	15.4	0.1698
10	5	5.5	20	22	0.4932
12	19	20.9	13	14.3	0.1739
Second-line Chemotherapy					0.0000	1.0000
No	74	81.3	74	81.3
Yes	17	18.7	17	18.7
Chemotherapy Response					0.1562	0.3680
Poor	42	46.2	35	38.5
Good	49	53.8	56	61.5
Metastatic Tumor Radiotherapy					0.0880	0.6565
Yes	44	48.4	48	52.7
No	47	51.6	43	47.3

ISSN: 1748-717X