Table 1

Characteristics of colorectal cancer cases included in the study and those not included in further analyses (n=1023)

	45 and Up cases diagnosed, August 2004 to December 2007, had colonoscopy and surgery (n=407)		All other 45 and Up cases diagnosed, January 2001 to December 2007 (n=616)		p value for difference
	No. of cases	% of cases	No. of cases	% of cases	p value for difference
Sex					0.72
Female	152	37	237	38
Male	255	63	379	62
Age at diagnosis (years)					0.08
<60	78	19	135	22
60–69	108	27	193	31
70–79	150	37	208	34
80+	71	17	80	13
Place of residence at diagnosis					0.02
Metropolitan	186	46	234	38
Other urban	103	25	156	25
Rural	118	29	226	37
Self-reported health status					0.58
Good to excellent	307	75	447	73
Fair/poor	78	19	134	22
Unspecified	22	5	35	6
Chronic obstructive pulmonary disorder^*					0.20
Yes	29	7	32	5
No	378	93	568	95
Diabetes^*					0.69
Yes	50	12	71	12
No	357	88	529	88
Cancer site					0.49
Colon	265	65	414	67
Rectum	142	35	202	33
Disease stage					0.003
Localised	185	45	246	40
Regional	176	43	255	41
Distant metastases	27	7	48	8
Unknown	19	5	67	11
Timing of colorectal cancer diagnosis relative to 45 and Up questionnaire					<0.001
Before (prevalent)	327	80	552	90
After (incident)	80	20	64	10

No differences between groups for year of diagnosis, socioeconomic status, housing type, language other than English at home, country of birth, highest education level attained, family history of colorectal cancer, body mass index, smoking status, marital status, health insurance, income level, cardiovascular disease recorded in hospital or other diseases in the Charlson Comorbidity Index.
↵* Excludes 16 cases not linked to Admitted Patient Data Collection who did not have comorbidity information.