Table 1.
Sample Characteristics of All Those Invited, Overall and by Invitation Group
| All (N = 2,012) | Intervention (n = 1,006) | Control (n = 1,006) | |
|---|---|---|---|
| Sex, % (n) | |||
| F | 46.3 (931) | 44.7 (450) | 47.8 (481) |
| M | 53.7 (1,081) | 55.3 (556) | 52.2 (525) |
| Age, mean (SD) | 66.0 (4.3) | 66.1 (4.3) | 65.9 (4.3) |
| Ethnicity, % (n) | |||
| Asian | 2.1 (42) | 2.3 (23) | 1.9 (19) |
| Black | 9.6 (193) | 9.4 (95) | 9.7 (98) |
| Mixed | 1.7 (34) | 1.4 (14) | 2.0 (20) |
| White | 79.7 (1,604) | 79.6 (801) | 79.8 (803) |
| Other | 2.9 (59) | 3.1 (31) | 2.8 (28) |
| Not stated | 4.0 (80) | 4.2 (42) | 3.8 (38) |
| National Index of Multiple Deprivation quintile, % (n) | |||
| Quintile 1 (1–6,496) most deprived | 60.9 (1,226) | 60.5 (609) | 61.3 (617) |
| Quintile 2 (6,497–12,993) | 35.3 (711) | 35.4 (356) | 35.3 (355) |
| Quintile 3 (12,994–19,489) | 2.3 (47) | 2.5 (25) | 2.2 (22) |
| Quintile 4 (19,490–25,986) | 0.1 (2) | 0.1 (1) | 0.1 (1) |
| Quintile 5 (25,987–32,482) least deprived | — | — | — |
| Missing | 1.3 (26) | 1.5 (15) | 1.1 (11) |
| Smoking status, % (n) | |||
| Current smoker | 74.5 (1,499) | 76.2 (767) | 72.8 (732) |
| Former smoker | 24.7 (497) | 23.0 (231) | 26.4 (266) |
| Never smoked tobacco | 0.6 (13) | 0.8 (8) | 0.5 (5) |
| Refused/not stated | 0.1 (2) | — | 0.2 (2) |
| Missing | 0.0 (1) | — | 0.1 (1) |
| Attendance from all invited, % (n) | |||
| Overall | 52.6 (1,058) | 52.3 (526) | 52.9 (532) |
| Attended first appointment | 40.3 (811) | 39.7 (399) | 41.0 (412) |
| Cancelled first appointment | 5.0 (100) | 4.6 (46) | 5.4 (54) |
| Sent reminder (no response to first invitation) | 54.7 (1,101) | 55.8 (561) | 53.7 (540) |
| Attended second (reminder) appointment | 9.6 (194) | 9.4 (95) | 9.8 (99) |
| Cancelled second (reminder) appointment | 2.9 (59) | 3.4 (34) | 2.5 (25) |
| No response to reminder invitation | 42.1 (848) | 42.9 (432) | 41.4 (416) |