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Table 5 Proportion of individuals who were adequately screeneda, according to socioeconomic status quintileb and screening round

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

  Prevalent first time invitees* Prevalent previous non-responders* Incident episodes*
  SI + Gist
N = 13,034
SI
N = 12,410
SI + Gist
N = 26,368
SI
N = 24,551
SI + Gist
N = 45,019
SI
N = 42,143
  % (n) % (n) % (n) % (n) % (n) % (n)
Adequately screened: 49.6 (6466) 48.2 (5981) 14.5 (3836) 14.2 (3479) 85.2 (38351) 85.0 (35830)
1st quintile (least deprived) 58.3 (1708) 56.1 (1541) 16.9 (792) 17.8 (796) 87.9 (10047) 86.9 (9841)
2nd quintile 55.6 (1610) 53.4 (1473) 16.2 (898) 15.9 (790) 86.3 (9797) 86.6 (9149)
3rd quintile 49.7 (1352) 49.4 (1270) 15.5 (874) 15.3 (741) 85.4 (8506) 85.4 (7324)
4th quintile 43.7 (995) 42.3 (943) 13.0 (683) 12.7 (596) 83.1 (5985) 83.4 (5448)
5th quintile (most deprived) 36.0 (786) 35.9 (746) 11.2 (580) 10.0 (549) 79.2 (3956) 79.1 (4021)
  1. aReturned 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)
  2. b271 (138 intervention and 133 control) individuals missing socioeconomic status
  3. *Comparison between trials groups within each screening round: Prevalent first time invitees (OR = 1.06, 95% CI: 0.96–1.16, p = 0.23); Prevalent previous non-responders (OR = 1.03, 95% CI: 0.94–1.13, p = 0.50); Incident episodes (OR = 1.01, 95% CI: 0.95–1.08, p = 0.67)
  4. *Comparison between trials groups within each screening round adjusting for age, gender and hub: Prevalent first time invitees (OR = 1.04, 95% CI: 0.98–1.10, p = 0.17); Prevalent previous non-responders (OR = 1.03, 95% CI: 0.96–1.09, p = 0.44); Incident episodes (OR = 1.01, 95% CI: 0.96–1.07, p = 0.73)
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