Table 5. Costs per participant of retention at four months, by allocation and overall.
| Cost | Personalised texts
(N = 139) |
Standard texts
(N = 144) |
Total
(N = 283) |
|---|---|---|---|
| Cost of texts (pence) | |||
| Mean (SD) | 9.5 (0.8) | 4.7 (0.7) | 7.1 (2.5) |
| Median (1 st Q, 3 rd Q) | 9.6 (9.6, 9.6) | 4.8 (4.8, 4.8) | 4.8 (4.8, 9.6) |
| Min, Max | 0.0, 9.6 | 0.0, 4.8 | 0.0, 9.6 |
| Cost of reminder letters (pence) | |||
| Mean (SD) | 16.9 (60.9) | 18.0 (62.6) | 17.4 (61.7) |
| Median (1 st Q, 3 rd Q) | 0.0 (0.0, 0.0) | 0.0 (0.0, 0.0) | 0.0 (0.0, 0.0) |
| Min, Max | 0.0, 235.0 | 0.0, 235.0 | 0.0, 235.0 |
| Total costs (pence) | |||
| Mean (SD) | 26.4 (61.0) | 22.7 (62.7) | 24.5 (61.8) |
| Median (1 st Q, 3 rd Q) | 9.6 (9.6, 9.6) | 4.8 (4.8, 4.8) | 9.6 (4.8, 9.6) |
| Min, Max | 0.0, 244.6 | 0.0, 239.8 | 0.0, 244.6 |