Table 1 Baseline characteristics
| Variables |
SI + Gist N = 84,421 |
SI N = 79,104 |
|---|---|---|
| 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) |
| % (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) |