Table 1 Colorectal cancer patients diagnosed in 1995 in six French counties

	Reference cancer site		Others		Total
	N =306		N =1107		N =1413
	N	%	N	%	N	%
Age
<65 years	94	30.72	330	29.81	424	30.01
65–74 years	113	36.93	387	34.96	500	35.39
75–84 years	76	24.84	274	24.75	350	24.77
>84 years	23	7.52	114	10.30	137	9.70
Unknown	0	0.00	2	0.18	2	0.14
Gender
Male	187	61.11	577	52.12	764	54.06
Female	119	38.88	530	47.87	649	45.93
Topography
Colon	184	60.13	681	61.52	865	61.21
Rectum	122	39.97	426	38.48	548	38.78
Type of sites
Urban	190	62.09	682	61.61	872	61.71
Rural	116	37.91	424	38.30	540	38.22
Unknown	0	0.00	1	0.09	1	0.07
Marital status
Married	82	26.80	328	29.63	410	29.02
Singled	183	59.80	554	50.05	737	52.16
Unknown	41	13.40	225	20.33	266	18.83
Social class ^*
Class A	31	10.13	104	9.39	135	9.55
Class B	68	22.22	203	18.34	271	19.18
Class C	103	33.66	306	27.64	409	28.95
Class D	31	10.13	107	9.67	138	9.77
Unknown	73	23.86	387	34.96	460	32.55
Cancer stage
Dukes A, B or C	229	74.84	874	78.95	1103	78.06
Metastasis and not operable	67	21.90	191	17.25	258	18.26
Unknown	10	3.27	42	3.79	52	3.68
County
Calvados	80	26.14	255	23.04	335	23.71
Côte-d'Or	35	11.44	117	10.57	152	10.76
Isère	43	14.05	167	15.09	210	14.86
Manche	35	11.44	203	18.34	238	16.84
Bas-Rhin	109	35.62	186	16.80	295	20.88
Haut-Rhin	4	1.31	179	16.17	183	12.95
Road-distance to nearest reference cancer site (km)
<46.4	235	76.80	563	50.86	798	56.48
>46.4	71	23.20	539	48.69	610	43.17
Unknown	0	0.00	5	0.45	5	0.35
Type of presentation
Screening, Symptom	258	84.31	906	81.84	1164	82.37
Emergency	44	14.38	148	13.37	192	13.59
Unknown	4	1.31	53	4.79	57	4.03

^*Class A: farmers; Class B: managers, self-employed; Class C: employees and workers; Class D: without any occupation.

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