Table 4. Multivariable logistic regression OR for colon and rectal cancer diagnosed after EP compared with non-EP taking into account patient socio-demographic characteristics, number of GP consultations for any reason the year before diagnosis (excluding 30 days) and symptoms recorded in primary care (N=1606).

	Colon Cancer				Rectal Cancer
	OR	95% CI		P-value	OR	95% CI		P-value
Gender
Men	1				1
Women	1.37	1.04	1.82	0.028	1.49	0.89	2.48	0.128
Age (years)
25–59	1.09	0.68	1.74	0.721	0.47	0.16	1.34	0.158
60–69	1				1
70–79	1.02	0.69	1.53	0.910	0.79	0.41	1.53	0.491
80+	1.84	1.24	2.73	0.002	1.40	0.75	2.62	0.286
Socio-economic deprivation quintile
1 (least deprived)	1				1
2	1.29	0.84	2.00	0.247	1.48	0.67	3.28	0.333
3	0.88	0.61	1.28	0.513	1.44	0.68	3.06	0.344
4	1.11	0.76	1.62	0.584	2.30	1.00	5.26	0.049
5 (most deprived)	1.50	0.92	2.45	0.106	3.47	1.50	8.03	0.004
No. of GP visits between 30 days and 12 months pre-diagnosis	1.00	0.99	1.01	0.658	1.03	1.01	1.06	0.008
Symptoms recorded between 30 days and 12 months pre-diagnosis
Anaemia	0.38	0.26	0.55	<0.001	0.73	0.28	1.92	0.530
Change in bowel habits	0.47	0.25	0.87	0.017	0.60	0.26	1.41	0.241
Rectal bleeding	0.22	0.12	0.41	<0.001	0.25	0.11	0.58	0.001
Symptoms recorded between 25–60 months pre-diagnosis
Anaemia	1.68	0.75	3.77	0.212	2.67	0.80	8.86	0.109
Change in bowel habits	0.73	0.21	2.50	0.617	11.96	1.55	92.09	0.017
Rectal bleeding	0.46	0.19	1.11	0.085	0.83	0.30	2.30	0.720

Abbreviations: CI=confidence interval; EP=emergency presentation; GP=general practioner; non-EP=non-emergency presentation; OR=odds ratio.