Table 1 Baseline characteristics
Variables | SIÂ +Â Gist NÂ =Â 84,421 | SI NÂ =Â 79,104 |
|---|---|---|
| Â | median (range) | median (range) |
Age at invite (in years) | 66.0 (59.0–74.0) | 66.0 (59.0–74.0) |
IMD deprivation score | 14.9 (0.5–87.8) | 14.8 (0.5–87.8) |
| Â | % (n) | % (n) |
Gender | ||
 Female | 51.2 (43195) | 51.4 (40671) |
 Male | 48.8 (41226) | 48.6 (38433) |
Socioeconomic status quintile | ||
 Least deprived (0–8.49) | 22.6 (19055) | 23.5 (18554) |
 2nd quintile (8.50–13.79) | 23.5 (19787) | 23.2 (18295) |
 3rd quintile (13.80–21.35) | 21.7 (18320) | 20.3 (15993) |
 4th quintile (21.36–34.17) | 17.5 (14747) | 17.1 (13469) |
 Most deprived (34.18–87.80) | 14.7 (12374) | 16.0 (12660) |
  Missing | 138 | 133 |
Hub | ||
 Midlands & North West | 26.6 (22469) | 30.8 (24369) |
 Southern | 24.5 (20651) | 26.6 (21004) |
 London | 8.8 (7416) | 8.4 (6636) |
 North East | 16.1 (13614) | 16.3 (12858) |
 Eastern | 24.0 (20271) | 18.0 (14237) |
Screening round | ||
 Incident episodes | 53.3 (45019) | 53.3 (42143) |
 Prevalent first time invitees | 15.4 (13034) | 15.7 (12410) |
 Prevalent previous non-responders | 31.2 (26368) | 31.0 (24551) |