Sociodemographic profile of attenders and non-attenders in the IDEAS trial
| IDEAS participants (invited) (n=1051) | Trial non-attenders(n=990) | Trial attenders (n=61) | |||||
| Total (n=61) | Control (n=34) | Incentive (n=27) | |||||
| Total (n=27) | Fixed (n=17) | Lottery (n=10) | |||||
| Gender | |||||||
| Male, n (%) | 609 (57.9) | 577 (58.3) | 32 (52.5) | 20 (58.8) | 12 (44.4) | 9 (52.9) | 3 (30.0) |
| Female, n (%) | 442 (42.1) | 413 (41.7) | 29 (47.5) | 14 (41.2) | 15 (55.6) | 8 (47.1) | 7 (70.0) |
| p=0.371Non-attenders versus attenders | p=0.264Incentive versus control | ||||||
| Age (years) | |||||||
| ≤65, n (%) | 578 (55.0) | 541 (54.6) | 37 (60.7) | 19 (55.9) | 18 (66.7) | 10 (58.8) | 8 (80.0) |
| >65, n (%) | 473 (45.0) | 449 (45.4) | 24 (39.3) | 15 (44.1) | 9 (33.3) | 7 (41.2) | 2 (20.0) |
| p=0.360Non-attenders versus attenders | p=0.392Incentive versus control | ||||||
| IMD decile | |||||||
| 0–20, n (%) | 556 (52.9) | 522 (52.7) | 34 (55.7) | 19 (55.9) | 15 (55.5) | 10 (58.8) | 5 (50.0) |
| 30–60, n (%) | 495 (47.1) | 468 (47.3) | 27 (44.3) | 15 (44.1) | 12 (44.4) | 7 (41.2) | 5 (50.0) |
| p=0.648Non-attenders versus attenders | p=0.980Incentive versus control | ||||||
| Distance from clinic (km) | |||||||
| Mean (SD) median range | 2.7 (1.81)2.50.0–17.5 | 2.71 (1.80)2.50.0–17.5 | 2.53 (1.94)2.00.5–10.0 | 2.94 (2.25)2.50.5–10.0 | 2.0 (1.32)2.00.5–6.5 | 2.09 (1.47)1.50.5–6.5 | 1.85 (1.06)2.00.5–3.5 |
| p=0.447;IMD=−0.1895% CI (−0.65 to 0.29)Non-attenders versus attenders | p=0.059;IMD=0.9495% CI (−0.04 to 1.92)Incentive versus control | ||||||
| Years registered | |||||||
| Mean (SD) median range | 5.96 (2.17)7.02–8 | 5.96 (2.19)7.02–8 | 5.84 (1.95)6.02–8 | 5.79 (1.92)6.02–8 | 5.89 (2.03)6.02–8 | 5.65 (2.18)5.02–8 | 6.30 (1.77)6.53–8 |
| p=0.654;IMD=−0.1395% CI (−0.69 to 0.43)Non-attenders versus attenders | p=0.852;IMD=−0.9595% CI (−1.11 to 0.92)Incentive versus control | ||||||
IDEAS, Incentives in Diabetic Eye Assessment by Screening; IMD, Indices of Multiple Deprivation.