Table 1.

Demographic data of responders and non-responders

		Responders (n=3300)		Non-responders (n=1692)
Characteristic		n	Per cent	n	Per cent	Total number approached	Overall percentage responding
Cancer group	χ2=18.8, p<0.001
Breast		854	25.9	394	23.3	1248	68.4
Colorectal		802	24.3	446	26.4	1248	64.3
NHL		778	23.6	470	27.8	1248	62.3
Prostate		866	26.2	382	22.5	1248	69.4
Age (years)	χ2=108, p<0.001
Under 55		467	14.2	282	16.7	749	62.3
55–64		692	21.0	335	19.8	1027	67.4
65–74		1108	33.6	414	24.5	1522	72.8
75–84		835	25.3	434	25.6	1269	65.8
85+		198	6.0	227	13.4	425	46.6
IMD category	χ2=55.9, p<0.001
1 least deprived		826	25.0	331	19.6	1157	71.4
2		812	24.6	357	21.1	1169	69.5
3		703	21.3	349	20.7	1052	66.8
4		554	16.8	352	20.7	906	61.1
5 most deprived		399	12.1	300	17.7	699	57.1
Missing		6	0.2	3	0.2	9	66.7
Time since diagnosis (years)	χ2=4.1, p=0.25
1		848	25.7	400	23.6	1248	67.9
2		834	25.3	414	24.5	1248	66.8
3		806	24.4	442	26.1	1248	64.6
5		812	24.6	436	25.8	1248	65.1

IMD, index of multiple deprivation; NHL, non-Hodgkin's lymphoma.