Table 4.
Comparison of outcomes between imputed data and complete cases.
| Analysis | Intervention | Control | ||||
|
|
n | Mean | n | Mean | ||
| Costs of health services use (£) |
|
|
|
|
||
|
|
In the 12 months before recruitment |
|
|
|
|
|
|
|
|
Imputed (SE) | 185 | 1792 (126) | 189 | 2084 (164) |
|
|
|
Complete cases (SD) | 96 | 1793 (1,545) | 101 | 1677 (1,418) |
|
|
In the 12 months trial period |
|
|
|
|
|
|
|
|
Imputed (SE) | 185 | 1816 (125) | 189 | 2067 (144) |
|
|
|
Complete cases (SD) | 96 | 1695 (1,404) | 101 | 1721 (1,539) |
| PAIDa scores |
|
|
|
|
||
|
|
Baseline |
|
|
|
|
|
|
|
|
Imputed (SE) | 185 | 18.1 (1.3) | 189 | 19.9 (1.4) |
|
|
|
Complete cases (SD) | 96 | 18.8 (16.8) | 101 | 19.0 (16.5) |
|
|
Twelve months |
|
|
|
|
|
|
|
|
Imputed (SE) | 185 | 14.5 (1.2) | 189 | 17.6 (1.4) |
|
|
|
Complete cases (SD) | 96 | 14.6 (15.5) | 101 | 15.9 (15.2) |
| EQ-5D-3Lb utility |
|
|
|
|
||
|
|
Baseline |
|
|
|
|
|
|
|
|
Imputed (SE) | 185 | 0.793 (0.018) | 189 | 0.766 (0.021) |
|
|
|
Complete cases (SD) | 96 | 0.792 (0.232) | 101 | 0.829 (0.207) |
|
|
Three months |
|
|
|
|
|
|
|
|
Imputed (SE) | 185 | 0.811 (0.016) | 189 | 0.786 (0.024) |
|
|
|
Complete cases (SD) | 96 | 0.824 (0.186) | 101 | 0.840 (0.229) |
|
|
Twelve months |
|
|
|
|
|
|
|
|
Imputed (SE) | 185 | 0.793 (0.023) | 189 | 0.736 (0.037) |
|
|
|
Complete cases (SD) | 96 | 0.814 (0.218) | 101 | 0.825 (0.250) |
aPAID: Problem Areas in Diabetes.
bEQ-5D-3L: A descriptive system of health-related quality of life state.