Reducing the socioeconomic gradient in uptake of the NHS bowel cancer screening Programme using a simplified supplementary information leaflet: a cluster-randomised trial

Table 6 Proportion of individuals who were adequately screened^a, according to socioeconomic status quintile^b and hub

	Midlands & North West*		Southern*		London*		North East*		Eastern*
	SI + Gist N = 22,469	SI N = 24,369	SI + Gist N = 20,651	SI N = 21,004	SI + Gist N = 7416	SI N = 6636	SI + Gist N = 13,614	SI N = 12,858	SI + Gist N = 20,271	SI N = 14,237
	% (n)	% (n)	% (n)	% (n)	% (n)	% (n)	% (n)	% (n)	% (n)	% (n)
Adequately screened:	54.9 (12336)	54.6 (13297)	59.0 (12177)	61.9 (12991)	55.0 (4078)	55.2 (3665)	58.2 (7918)	57.4 (7382)	59.9 (12144)	55.9 (7955)
1st quintile (least deprived)	63.9 (2645)	65.9 (2852)	65.7 (4001)	67.1 (4884)	71.6 (752)	66.4 (558)	67.8 (1588)	67.7 (1422)	65.5 (3561)	61.4 (2462)
2nd quintile	61.4 (3037)	62.3 (3194)	60.5 (3170)	63.4 (3395)	62.0 (876)	60.5 (764)	65.1 (1831)	65.6 (1782)	63.2 (3391)	59.5 (2277)
3rd quintile	56.7 (2607)	57.6 (2693)	57.7 (2807)	60.2 (2760)	56.5 (907)	56.3 (783)	62.4 (1673)	62.2 (1533)	59.8 (2738)	54.4 (1566)
4th quintile	50.7 (1953)	50.5 (2136)	51.4 (1602)	53.5 (1433)	51.7 (983)	53.1 (950)	53.3 (1423)	53.2 (1353)	53.0 (1702)	50.0 (1115)
5th quintile (most deprived)	42.3 (2077)	40.3 (2403)	44.2 (569)	46.5 (495)	38.7 (555)	45.3 (610)	45.0 (1393)	42.5 (1283)	44.1 (728)	41.5 (525)

^a Returned a gFOBt kit within 18 weeks of the invitation that led to a ‘definitive’ test result of either ‘normal’ (i.e. no further investigation required) or ‘abnormal’ (i.e. requiring referral for further testing, usually colonoscopy) by the date of data extraction (18 weeks after the last day of the intervention).^b 271 (138 SI + Gist and 133 SI) individuals missing socioeconomic status, 146 of these were adequately screened (84 SI + Gist and 62 SI)
*Comparison between trials groups within each hub: Midlands & North West (OR = 1.01, 95% CI: 0.83–1.24, p = 0.89); Southern (OR = 0.89, 95% CI: 0.84–0.94, p < 0.01); London (OR = 0.99, 95% CI: 0.64–1.52, p = 0.96); North East (OR = 1.03, 95% CI: 0.89–1.19, p = 0.68); Eastern (OR = 1.18, 95% CI: 0.97–1.43, p = 0.09)
*Comparison between trials groups within each hub adjusting for age, gender and screening round: Midlands & North West (OR = 1.01, 95% CI: 0.93–1.09, p = 0.85); Southern (OR = 1.01, 95% CI: 0.95–1.07, p = 0.75); London (OR = 1.01, 95% CI: 0.88–1.16, p = 0.93); North East (OR = 1.08, 95% CI: 0.99–1.17, p = 0.09); Eastern (OR = 1.03, 95% CI: 0.96–1.10, p = 0.40)

ISSN: 1471-2407