Table 3.

Three, 12 and 24 month response rates

	3 months		12 months		24 months
	Group A	Group B	Group A	Group B	Group A	Group B
Posted (n)	6112	5993	2548	2366	1752	1617
Response (n)	2466	2315	1873	1719	1527	1406
Response Rate (%)	40.3	38.6	73.5	72.7	87.2	87.0
Absolute difference (%)	1.7		0.9		0.2
95% CI	0.0 to 3.5		−1.7 to 3.4		−2.1 to 2.5
Relative Risk	1.03		1.03		1.02
95% CI	1.00 to 1.06		0.94 to 1.13		0.85 to 1.21
p	0.053		0.52		0.878